CN206365083U - Band turns the Switching Power Supply of circuit for lamp - Google Patents
Band turns the Switching Power Supply of circuit for lamp Download PDFInfo
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- CN206365083U CN206365083U CN201621412216.XU CN201621412216U CN206365083U CN 206365083 U CN206365083 U CN 206365083U CN 201621412216 U CN201621412216 U CN 201621412216U CN 206365083 U CN206365083 U CN 206365083U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model proposes the Switching Power Supply that a kind of band turns circuit for lamp, it is characterised in that including：Input rectifying filter circuit, inverter control circuit, transformer circuit, regulator rectifier circuit, LED control circuit and intelligent identifying circuit, the LED control circuit include two inputs.The positive input terminal of the LED control circuit connects the positive output end of regulator rectifier circuit, the negative input end ground connection of the LED control circuit.By the contrast between sampled voltage and two reference voltages inside the LED control circuit, the light color of common-anode LED component is set to produce change.Turn circuit for lamp and LED color is changed according to output voltage, enable users to the output voltage that the color according to common-anode LED component judges Switching Power Supply, it is ensured that electrical equipment is charged under optimum charging voltage.
Description
Technical field
The utility model is related to Switching Power Supply, and espespecially a kind of band turns the Switching Power Supply of circuit for lamp.
Background technology
Existing charger, which typically has, can indicate the LED of charger operation state.Usually, existing charger
The effect of LED is to indicate whether charger has output voltage by the light on and off of LED, whether to let the user know that charger
In normal work.With the development of technology, occur in that the concept of intelligent charger, i.e. charger have the work(of identification load characteristic
Can, and adjustable output voltage level provides suitable charging voltage for load, but charger only has single LED color, user
It can not differentiate whether normally identification loads and provides corresponding output voltage level charger.
Utility model content
Based on this, the utility model provides a kind of band of utilization LED color display output voltage range and turns opening for circuit for lamp
Powered-down source.
In order to realize the purpose of this utility model, the utility model uses following technical scheme：
A kind of band turns the Switching Power Supply of circuit for lamp, for providing dc source for electrical equipment, it is characterised in that including：
Input rectifying filter circuit, inverter control circuit, transformer circuit, regulator rectifier circuit, LED control circuit and Intelligent Recognition electricity
Road；
The transformer circuit include transformer and absorbing circuit, the transformer include armature winding, assists winding and
Secondary windings, the two ends of the transformer secondary output winding connect the input of regulator rectifier circuit, the regulator rectifier circuit
Positive output end connects the positive input terminal of intelligent identifying circuit and the positive input terminal of LED control circuit, the rectifying and voltage-stabilizing electricity respectively
The negative output terminal ground connection on road, connects the negative input end of intelligent identifying circuit and the negative input end ground connection of LED control circuit；
The LED control circuit includes resistance R21, common-anode LED component, triode Q1, resistance R22, resistance R28, the
One comparator C1, the second comparator C2, first resistor string RS1, second resistance string RS2, voltage-stabiliser tube U4, the one of the resistance R21
The positive input terminal as the LED control circuit is held, the regulator rectifier circuit positive output end, the one of the resistance R21 is connected
End is also respectively connected with one end of the first resistor string RS1 and one end of the second resistance string RS2, and the resistance R21 is another
The anode of the end connection common-anode LED component, the first negative electrode of the common-anode LED component connects the resistance string R22's
One end and the colelctor electrode of the triode Q1, the other end of the resistance R22 connect the output of the second comparator C2 respectively
End and the base stage of the triode Q1, triode Q1 emitter-base bandgap grading pass through resistance R28 one end, resistance R28 other end ground connection, institute
The second negative electrode for stating common-anode LED component connects the output end of the first comparator C1, and the first resistor string RS1's is another
The end connection resistance R28 other end, the node of the first resistor string RS1 connects the anti-of the first comparator C1 respectively
The inverting input of phase input and the second comparator C2, second resistance string RS2 other ends connection resistance R28's is another
End, second resistance string RS2 the first partial node connects voltage-stabiliser tube U4 negative pole and the second comparator C2 in-phase input end respectively,
Voltage-stabiliser tube U4 negative pole is also connected with voltage-stabiliser tube U4 benchmark pole, the plus earth of the voltage-stabiliser tube U4, the second resistance string RS2
The second partial node connect the in-phase input end of the first comparator C1.
By turning circuit for lamp according to output voltage change LED color, enable users to according to common-anode LED component
Color judges the output voltage of Switching Power Supply, it is ensured that electrical equipment is charged under optimum charging voltage.
In one of the embodiments, the first resistor string RS1 includes the resistance R23 and resistance R24 of series connection, the electricity
Resistance R23 is connected the inverting input and the second comparator C2 of the first comparator C1 with the tie point of the resistance R24 respectively
Inverting input.
In one of the embodiments, the second resistance string RS2 includes resistance R25, resistance R26 and the resistance of series connection
R27, the resistance R25 are connected in-phase input end and the institute of the second comparator C2 with the tie point of the resistance R26 respectively
Voltage-stablizer U4 negative pole is stated, the negative pole of the voltage-stablizer U4 is also connected with the benchmark pole of the voltage-stablizer U4, the resistance R26 and institute
The tie point for stating resistance R27 connects the first comparator C1 in-phase input ends.
In one of the embodiments, the common-anode LED component includes LED 1 He of the light color for green
Light color is red LED 2, and the negative electrode of the LED 1 connects the current collection of the triode Q1 respectively
Pole and one end of the resistance R22, the output end of the negative electrode of the LED 2 connection first comparator C1.
In one of the embodiments, the inverter control circuit include power management chip U1, resistance R1, resistance R4,
Resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, electric capacity C3, electric capacity C3, electric capacity C4, diode D6, switching tube Q2, its
In：
The power input pin connection resistance R1 of power management chip U1 one end, the resistance R1 other end is as inverse
Become the first input end of control circuit, the resistance R1 other end connects the first output end of input filter circuit, the power supply pipe
Reason chip U1 power input pin is also respectively connected with one end of the electric capacity C3 and one end of the resistance R4, the electric capacity C3
The other end be used to be grounded, the other end of the resistance R4 connects the negative electrode of the diode D6, the anode of the diode D6
As the power supply supply side of inverter control circuit, the anode of the diode D6 connects the one of the assists winding of the transformer
End；
The output pin of the power management chip U1 is described by the grid of the resistance R5 connections switching tube Q2
Switching tube Q2 source electrode connects one end of the resistance R6 and one end of the resistance R7, the other end point of the resistance R6 respectively
The current detecting pin of the power management chip U1 and one end of the electric capacity C4, another termination of the electric capacity C4 are not connected
Ground, the grounding pin ground connection of the power management chip U1, the frequency setting pin of the power management chip U1 passes through described
Resistance R8 is grounded；
The digital communication pin of the power management chip U1 connects one end of the resistance R9, and the resistance R9's is another
The first COM1 as the inverter control circuit is held, one end of the resistance R8 ground connection is used as the inverter control circuit
The second COM1.
In one of the embodiments, the input rectifying filter circuit includes common mode inductance LF1, rectifier bridge BD1 and electricity
Hold C1, wherein：
The first input end of the common mode inductance LF1 is used to connect live wire, and the second input of the common mode inductance LF1 is used
In connection zero line, the output end of the common mode inductance LF1 connects the input of the rectifier bridge BD1, and the rectifier bridge BD1 is just
Output end is as the positive output end of input rectifying filter circuit, and the negative output terminal of the rectifier bridge BD1 is used as the input rectifying
The negative output terminal of filter circuit；The two ends of the electric capacity C1 connect rectifier bridge BD1 positive output end and bearing for rectifier bridge BD1 respectively
Output end.
In one of the embodiments, the electric capacity C1 is electrochemical capacitor, and the positive pole of the electric capacity C1 connects the rectification
Bridge BD1 positive output end, the negative pole of the electric capacity C1 connects the negative output terminal of the rectifier bridge BD1.
In one of the embodiments, the regulator rectifier circuit includes diode D8 and electric capacity C5, the diode D8
Anode is connected with one end of the transformer secondary output winding, and the diode D8 negative electrodes are connected with one end of the electric capacity C5, institute
The other end that the electric capacity C5 other ends are stated with the transformer secondary output winding is connected.
In one of the embodiments, the electric capacity C5 is electrochemical capacitor, the cathode connecting diode D8 of the electric capacity C5
Negative electrode, the negative electrode of the electric capacity C5 connects the other end of transformer secondary output winding.
In one of the embodiments, the intelligent identifying circuit include resistance 10, resistance 11, resistance R12, resistance 13,
Resistance R14, electric capacity C6, photo-coupler U2, control chip U3 and USB interface are filled soon, wherein：
The control chip U3 power input pins of filling soon are described to fill soon as the positive input terminal of the intelligent identifying circuit
Control chip U3 power input pin is connected with the positive output end of the regulator rectifier circuit, one end of the resistance R10 with
The power input pin connection for filling control chip U3 soon, the other end of the resistance R10 connects the photo-coupler U2's
Positive pole, the colelctor electrode of the photo-coupler U2 as the intelligent identifying circuit the first feedback end, the photo-coupler U2's
Emitter-base bandgap grading is as the second feedback end of the intelligent identifying circuit, and control is filled in the connection to the negative pole of the photo-coupler U2 soon respectively
One end of chip U3 external drive pin and the electric capacity C6, the electric capacity C6 other ends pass through the resistance R12 connections institute
The compensation pin for filling control chip U3 soon is stated, the grounding pin that control chip U3 is filled soon is used as the intelligent identifying circuit
Negative input end, the grounding pin ground connection that control chip U3 is filled soon, the electric discharge pin connection institute that control chip U3 is filled soon
Resistance R11 one end is stated, the other end of the resistance R11 connects the positive power source terminal of the USB interface, and the resistance R11's is another
One end is also connected with the power input pin for filling control chip U3 soon, the positive signal pin connection that control chip U3 is filled soon
The positive communication ends of the USB interface, the negative signal pin that control chip U3 is filled soon connects the negative communication of the USB interface
End, the output circuit detection pin that control chip U3 is filled soon connects one end of the resistance R13, and the resistance R13's is another
One end connects the negative power end of the USB interface, and the other end of the resistance R13 is also filled soon by the resistance R14 with described
Control chip U3 grounding pin connection.
Brief description of the drawings
Fig. 1 turns the structural representation of the Switching Power Supply of circuit for lamp for the band of a preferred embodiment of the present utility model；
Fig. 2 turns the circuit diagram of the Switching Power Supply of circuit for lamp for the band of a preferred embodiment of the present utility model.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
In description of the present utility model, it is to be understood that term " first ", " second " are only used for describing purpose, and
It is not intended that indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define
At least one this feature can be expressed or be implicitly included to the feature of " first ", " second ".In description of the present utility model,
" multiple " are meant that at least two, such as two, three etc., unless otherwise specifically defined.
Fig. 1 and Fig. 2 is referred to, is that the band of the better embodiment of the utility model one turns the Switching Power Supply of circuit for lamp.For example,
The Switching Power Supply that the band of the embodiment of the utility model one turns circuit for lamp includes：Input is used for the input rectifying filtering for accessing civil power
Circuit, the first output end connection transformer circuit and inverter control circuit of input rectifying filter circuit, input rectifying filtered electrical
Second output end on road is used to be grounded；Transformer circuit includes transformer and absorbing circuit；Transformer includes armature winding, secondary
Winding and assists winding, armature winding one end connection input rectifying the first output end of filter circuit, the connection of the armature winding other end
The output end of inverter control circuit, assists winding one end connect inverter control circuit power input, assists winding it is another
End ground connection；The two ends of secondary windings connect two inputs of regulator rectifier circuit respectively；Regulator rectifier circuit includes two outputs
End, the negative output terminal ground connection of regulator rectifier circuit, the positive output end of regulator rectifier circuit connects the positive input of LED control circuit
End, the negative input end ground connection of LED control circuit, LED control circuit includes resistance R21, common-anode LED component, triode Q1, electricity
R22, resistance R28, first comparator C1, the second comparator C2, first resistor string RS1, second resistance string RS2, voltage-stabiliser tube U4 are hindered,
Resistance R21 one end connects regulator rectifier circuit positive output end, resistance R21 one end as the positive input terminal of LED control circuit
It is also respectively connected with first resistor string RS1 one end and second resistance string RS2 one end, resistance R21 other ends connection common-anode LED
The anode of component, the first negative electrode connection resistance string R22 of common-anode LED component one end and triode Q1 colelctor electrode, second
The other end of comparator C2 output end and the base stage connecting resistance R22 of triode, triode Q1 emitter-base bandgap grading is connect by resistance R28
Ground, the second negative electrode of common-anode LED component connects the second comparator C2 output end, first resistor string RS1 other end connection
Ground, first resistor string RS1 node connects first comparator C1 and the second comparator C2 inverting input, second resistance respectively
Go here and there RS2 other ends ground connection, second resistance string RS2 first node connects voltage-stabiliser tube U4 negative pole and the second comparator C2 respectively
In-phase input end, voltage-stabiliser tube U4 negative pole is also connected with voltage-stabiliser tube U4 benchmark pole, voltage-stabiliser tube U4 plus earth；Intelligent Recognition
Positive input terminal is connected with regulator rectifier circuit positive output end, the first feedback end of intelligent identifying circuit and the of inverter control circuit
One communication ends are connected, and the second feedback end of intelligent identifying circuit and the second communication ends of inverter control circuit are connected, Intelligent Recognition
The output end of circuit, which is used to connect, to be loaded；
For example, as shown in figure 1, the band of an embodiment turns the Switching Power Supply 10 of circuit for lamp, for being provided directly for electrical equipment
Power supply is flowed, including：Input rectifying filter circuit 11, inverter control circuit 12, transformer circuit 13, regulator rectifier circuit 14, LED
Circuit 15 and intelligent identifying circuit 16 are controlled, the wherein input of input rectifying filter circuit is used to access civil power, for example, inputted
Current rectifying and wave filtering circuit includes two inputs, is respectively used to connection live wire and zero line.First output of input rectifying filter circuit
End connects the first input end and transformer of inverter control circuit respectively, and the second output end of input rectifying filter circuit is used to connect
Ground.Input rectifying filter circuit is used to carry out rectifying and wave-filtering processing to the civil power of input, and electric main is converted into direct current.
For example, transformer includes armature winding, secondary windings and assists winding, armature winding one end connection input filter electricity
First output end on road, armature winding one end is also connected with the first input end of inverter control circuit；The armature winding other end is connected
The output end of inverter control circuit, assists winding one end is used for the power supply supply side for connecting inverter control circuit, and assists winding is another
Two ends are used to be grounded, and the two ends of secondary windings connect two inputs of output regulator rectifier circuit, regulator rectifier circuit respectively
Positive output end connect the positive input terminal of LED control circuit and the positive input terminal of intelligent identifying circuit, regulator rectifier circuit respectively
Negative output terminal ground connection, LED control circuit negative input end ground connection, intelligent identifying circuit negative input end ground connection, Intelligent Recognition
Being connected by USB interface end for circuit is loaded.
In the present embodiment, assists winding is used to power for inverter control circuit.Regulator rectifier circuit is used for transformer
The induced voltage of secondary windings carries out the processing such as rectification, voltage stabilizing, the VD stablized.LED control circuit is used for
The photochromic of common-anode LED component is adjusted according to the output voltage level of current rectifying and wave filtering circuit.Intelligent identifying circuit is used for load
Power and recognize that the optimum charging voltage of load provides voltage adjustment signal to inverter control circuit with payload communication.
Above-mentioned band turns the Switching Power Supply of circuit for lamp, sets LED control circuit in the output end of current rectifying and wave filtering circuit, can pass through
Detect current rectifying and wave filtering circuit output voltage, adjustment common-anode LED component in green LED lamp and red LED lamp light on and off and
Change the photochromic of LED light group, user makes user can ensure that equipment exists according to the photochromic output voltage level for distinguishing Switching Power Supply
Charged under optimal charging voltage.
In one of the embodiments, as shown in Fig. 2 inverter control circuit includes power management chip U1, resistance R1, electricity
Hinder R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, electric capacity C3, electric capacity C4, diode D6, switching tube Q2；Wherein,
Power management chip U1 power input pin connection resistance R1 one end, the resistance R1 other end is used as inverter control circuit
First input end, the resistance R1 other end connects the first output end of input filter circuit, and power management chip U1 power supply is defeated
Enter one end that pin also connects electric capacity C3 and resistance R4 respectively, the electric capacity C3 other end is used to be grounded, and resistance R4's is another
End connection diode D6 negative electrode, diode D6 anode is used as the power supply supply side of inverter control circuit, diode D6 sun
Pole connects one end of assists winding；Power management chip U1 output pin is opened by resistance R5 connecting valve pipes Q2 grid
The source electrode for closing pipe Q2 connects resistance R6 one end and resistance R7 one end respectively, and switching tube Q2 drain electrode is used as inverter control circuit
Output end, switching tube Q2 drain electrode is connected with the other end of primary winding, and the resistance R6 other end connects electricity respectively
Source control chip U1 current detecting pin and electric capacity C4 one end, electric capacity C4 other end ground connection, power management chip U1's
Grounding pin is grounded, and power management chip U1 frequency setting pin is grounded by resistance R8, power management chip U1 numeral
Communications pins connection resistance R9 one end, the resistance R9 other end as inverter control circuit the first COM1, with intelligence
Identification module the first feedback port connection, resistance R8 ground connection one end as inverter control circuit the second COM1, with
The second feedback port connection of intelligent identification module.
As shown in Fig. 2 transformer circuit is provided with absorbing circuit, absorbing circuit includes, resistance R2, resistance R3, electric capacity C2 and
Diode D5, wherein：Resistance R2 one end connects one end of primary winding and electric capacity C2 one end respectively, and resistance R2's is another
One end connection resistance R3 one end, the resistance R3 other end connection electric capacity C2 other end and diode D5 negative electrode.
In one of the embodiments, as shown in Fig. 2 input rectifying filter circuit includes common mode inductance LF1, rectifier bridge
BD1 and electric capacity C1, wherein：Common mode inductance LF1 first input end is used to connect live wire, common mode inductance LF1 the second input
For connecting zero line, common mode inductance LF1 the first output end connection rectifier bridge BD1 first input end, the of common mode inductance LF1
Two output ends connection rectifier bridge BD1 the second input；Rectifier bridge BD1 positive output end as input rectifying filter circuit just
Output end, rectifier bridge BD1 negative output terminal as input rectifying filter circuit negative output terminal；Electric capacity C1 two ends are connected respectively
Rectifier bridge BD1 positive output end and rectifier bridge BD1 negative output terminal.
For example, common mode inductance LF1 includes first coil and the second coil, common mode inductance LF1 first input end and second
Input is respectively one end and one end of the second coil of first coil, common mode inductance LF1 the first output end and the second output
End is respectively the other end of first coil and the other end of the second coil.
And for example, in order to strengthen filter effect, electric capacity C1 uses electrochemical capacitor, electrochemical capacitor C1 positive pole connection rectifier bridge
BD1 positive output end, electrochemical capacitor C1 negative pole is respectively used to connect rectifier bridge BD1 negative output terminal.
In one of the embodiments, as shown in Fig. 2 for the security of further lifting switch power supply, above-mentioned switch
Power supply also includes fuse F1, and common mode inductance LF1 first input end is used to pass through fuse F1 connection live wires.So, if opening
Short circuit or other exceptions occur for the input side in powered-down source so that when Switching Power Supply input side temperature is too high, fuse F1 fusing, make
Whole Switching Power Supply power-off is obtained, to avoid the occurrence of security incident.
In one of the embodiments, as shown in Fig. 2 regulator rectifier circuit includes：Diode D8 and electric capacity C5；Wherein,
Diode D8 anodes connect as regulator rectifier circuit first input end, one end of diode D8 anodes and transformer secondary output winding
Connect, diode D8 negative electrodes are connected with electric capacity C5 one end, the other end and ground of the electric capacity C5 other ends respectively with transformer secondary output winding
Connection, diode D8 negative electrodes are as regulator rectifier circuit positive output end, and the electric capacity C5 other ends are regulator rectifier circuit negative output terminal；
For example, in order to strengthen filter effect, electric capacity C5 employs electrochemical capacitor, electrochemical capacitor C5 cathode connecting diode D8 the moon
Pole, electrochemical capacitor C5 negative electrode connection is connected and ground connection with the transformer secondary output winding other end respectively.
LED control circuit includes two inputs.Wherein, LED control circuit positive input terminal is connecting regulator rectifier circuit just
Output end, LED control circuit negative input end ground connection.Specifically, LED control circuit includes resistance R21, common-anode LED component, three
Pole pipe Q1, resistance R22, resistance R28, first comparator C1, the second comparator C2, first resistor string RS1, second resistance string RS2
And voltage-stabiliser tube U4, common-anode LED component is including sending the LED 1 of green glow and sending the light emitting diode of feux rouges
LED2, LED 1 is connected with the anode of LED 2, and the negative electrode of LED 1 is used as common-anode
First negative electrode of LED component, the negative electrode of LED 2 as common-anode LED component the second negative electrode, the one of resistance R21
The positive input terminal as LED control circuit is held, regulator rectifier circuit positive output end is connected, resistance R21 one end is also respectively connected with
First resistor string RS1 one end and second resistance string RS2 one end, the resistance R21 other ends connect the sun of common-anode LED component
Pole, the first negative electrode connection resistance string R22 of common-anode LED component one end and triode Q1 colelctor electrode, resistance R22's is another
The second comparator C2 of end connection output end and the base stage of triode, triode Q1 emitter-base bandgap grading connection resistance R28 one end, resistance
The R28 other end is used as the negative input end of LED control circuit, resistance R28 other end ground connection, the second of common-anode LED component
Negative electrode connection first comparator C1 output end, the first resistor string RS1 other end connection resistance R28 other end, the first electricity
Resistance string RS1 node connects first comparator C1 and the second comparator C2 inverting input respectively, and second resistance string RS2 is another
The end connection resistance R28 other end, second resistance string RS2 first node connects voltage-stabiliser tube U4 negative pole and second and compared respectively
Device C2 in-phase input end, voltage-stabiliser tube U4 negative pole is also connected with voltage-stabiliser tube U4 benchmark pole, voltage-stabiliser tube U4 positive pole connection resistance
The R28 other end, second resistance string RS2 the second partial node connection first comparator C1 in-phase input end.LED control circuit
Detected for the output voltage to regulator rectifier circuit, when the output voltage of regulator rectifier circuit is in 5V or so, common anode
Pole LED component sends green glow, when the output voltage of regulator rectifier circuit is in 9V or so, makes common-anode LED component send gold-tinted,
When the output voltage of regulator rectifier circuit is in 11V or so, makes common-anode LED component send feux rouges, enable users to according to common anode
Light color shown by the LED component of pole judges the output voltage of Switching Power Supply, it is ensured that electrical equipment is carried out under optimum charging voltage
Charging.
For example, above-mentioned first resistor string RS1 includes the resistance of at least two series connection.For example, as shown in Fig. 2 above-mentioned first
Resistance string RS1 includes the resistance R23 and resistance R24 of series connection, and resistance R23 one end connects resistance R21 one end, resistance R23's
The other end is grounded by resistance R24, and resistance R23 and resistance R24 tie point connect first comparator C1 anti-phase input respectively
End and the second comparator C2 inverting input.
For example, above-mentioned second resistance string RS2 includes the resistance of at least three series connection.For example, as shown in Fig. 2 above-mentioned second
Resistance string RS2 includes resistance R25, resistance R26 and the resistance R27 of series connection, resistance R25 one end connection resistance R21 one end, electricity
The other end for hindering R25 is grounded by resistance R26 and resistance R27, and resistance R25 and resistance R26 tie point connect the second ratio respectively
The benchmark pole of in-phase input end, voltage-stablizer U4 negative pole and voltage-stablizer U4 compared with device C2, resistance R26 and resistance R27 tie point
Connect first comparator C1 in-phase input end.
Specifically, after the output end of regulator rectifier circuit first connects voltage-stablizer U4 negative poles and benchmark extremely respectively through resistance R25,
Voltage-stablizer U4 negative poles provide the second stable reference voltage, the electricity of voltage-stablizer U4 negative poles for the second comparator C2 in-phase input end
Pressure provides the first stable reference voltage after resistance R26 and resistance R27 partial pressures for first comparator C1 in-phase input end,
Regulator rectifier circuit output voltage is after first resistor string RS1 partial pressures, the inverting input for being first comparator C1 and the second ratio
Inverting input compared with device C2 provides sampled voltage, and when regulator rectifier circuit output voltage is in 5V or so, sampled voltage is less than
First reference voltage and the second reference voltage, turn on the LED1 in LED light group, and LED2 ends, and LED1 sends green glow, LED2
Do not light, LED light group shows green；When regulator rectifier circuit output voltage is in 9V or so, sampled voltage is higher than the first ginseng
Voltage is examined, but less than the second reference voltage, turns on the LED1 in LED light group, and LED2 is turned on, LED1 sends green glow, LED2
Send feux rouges, LED light group because it is photochromic it is overlapping show sodium yellow；When regulator rectifier circuit output voltage is in 11V or so, adopt
Sample voltage is higher than the first reference voltage and the second reference voltage, ends the LED1 in LED light group, and LED2 is turned on, LED1 hairs
Go out and do not light, LED2 glows, LED light group shows red.
Wherein, when sampled voltage is less than the second reference voltage, the second comparator C2 output high level, the base emitter-base bandgap grading of triode
Between produce bias voltage, make the collection emitter-base bandgap grading of triode turn on, make LED1 cathode voltages consistent with ground potential, LED1 positive poles and negative pole
Between there is positive bias-voltage；Sampled voltage is higher than the first reference voltage, the second comparator C2 output low levels, LED2 positive poles and negative pole
Between there is positive bias-voltage.
In one of the embodiments, as shown in Fig. 2 intelligent identifying circuit includes：Resistance 10, resistance 11, resistance R12,
Resistance 13, resistance R14, electric capacity C6, photo-coupler U2, control chip U3 and USB interface are filled soon；Wherein, control chip U3 is filled soon
Power input pin fills control chip U3 power input pin and rectifying and voltage-stabilizing soon as the positive input terminal of intelligent identifying circuit
The positive output end connection of circuit, resistance R10 one end is connected with filling control chip U3 power input pin soon, resistance R10's
Other end connection photo-coupler U2 positive pole, photo-coupler U2 colelctor electrode as intelligent identifying circuit the first feedback end, with
The first communication ends connection of inverter control circuit, photo-coupler U2 emitter-base bandgap grading as intelligent identifying circuit the second feedback end, with
The second communication ends connection of inverter control circuit, photo-coupler U2 negative pole connects the external drive for filling control chip U3 soon respectively
One end of pin and electric capacity C6, the electric capacity C6 other ends fill control chip U3 compensation pin by resistance R12 connections soon, and control is filled soon
Coremaking piece U3 grounding pin fills control chip U3 grounding pin ground connection, soon soon as the negative input end of intelligent identifying circuit
Control chip U3 electric discharge pin connection resistance R11 one end is filled, the resistance R11 other end connects the positive power source terminal of USB interface,
The resistance R11 other end is also connected with filling control chip U3 power input pin soon, and control chip U3 positive signal pin is filled soon
The positive communication ends of USB interface are connected, the negative signal pin that control chip U3 is filled soon connects the negative communication ends of USB interface, and control is filled soon
Coremaking piece U3 output circuit detection pin connection resistance R13 one end, the resistance R13 other end connects the negative electricity of USB interface
Source, the resistance R13 other end is also connected by resistance R14 with filling control chip U3 grounding pin soon.Intelligent identifying circuit
By the positive communication ends of USB interface and negative communication ends identification load optimum charging voltage, intelligent identifying circuit passes through USB interface
Positive power source terminal and negative power end provide direct current energy for load.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of band turns the Switching Power Supply of circuit for lamp, for providing dc source for electrical equipment, it is characterised in that including：It is defeated
Enter current rectifying and wave filtering circuit, inverter control circuit, transformer circuit, regulator rectifier circuit, LED control circuit and Intelligent Recognition electricity
Road；
The transformer circuit includes transformer and absorbing circuit, and the transformer includes armature winding, assists winding and secondary
Winding, the two ends of the transformer secondary output winding connect the input of regulator rectifier circuit, the regulator rectifier circuit it is just defeated
Go out the end positive input terminal of connection intelligent identifying circuit and the positive input terminal of LED control circuit respectively, the regulator rectifier circuit
Negative output terminal is grounded, and connects the negative input end of intelligent identifying circuit and the negative input end ground connection of LED control circuit；
The LED control circuit includes resistance R21, common-anode LED component, triode Q1, resistance R22, resistance R28, the first ratio
Make one end compared with device C1, the second comparator C2, first resistor string RS1, second resistance string RS2, voltage-stabiliser tube U4, the resistance R21
For the positive input terminal of the LED control circuit, the regulator rectifier circuit positive output end is connected, one end of the resistance R21 is also
One end of the first resistor string RS1 and one end of the second resistance string RS2 are connected respectively, and the resistance R21 other ends connect
The anode of the common-anode LED component is connect, the first negative electrode of the common-anode LED component connects one end of the resistance string R22
With the colelctor electrode of the triode Q1, the other end of the resistance R22 connect respectively the second comparator C2 output end and
The base stage of the triode Q1, triode Q1 emitter-base bandgap grading is by resistance R28 one end, and resistance R28 other end ground connection is described common
Second negative electrode of anode LED component connects the output end of the first comparator C1, and the other end of the first resistor string RS1 connects
The other end of the resistance R28 is connect, the node of the first resistor string RS1 connects the anti-phase defeated of the first comparator C1 respectively
Enter end and the inverting input of the second comparator C2, the second resistance string RS2 other ends connect the resistance R28 other end, the
Two resistance string RS2 the first partial node connects voltage-stabiliser tube U4 negative pole and the second comparator C2 in-phase input end, voltage stabilizing respectively
Pipe U4 negative pole is also connected with voltage-stabiliser tube U4 benchmark pole, the plus earth of the voltage-stabiliser tube U4, the of the second resistance string RS2
Two partial nodes connect the in-phase input end of the first comparator C1.
2. band according to claim 1 turns the Switching Power Supply of circuit for lamp, it is characterised in that the first resistor string RS1 bags
The resistance R23 and resistance R24, the resistance R23 for including series connection are connected described first with the tie point of the resistance R24 and compared respectively
The inverting input of device C1 inverting input and the second comparator C2.
3. band according to claim 2 turns the Switching Power Supply of circuit for lamp, it is characterised in that the second resistance string RS2 bags
Resistance R25, the resistance R26 and resistance R27, the resistance R25 and the tie point of the resistance R26 for including series connection are connected described respectively
The negative pole of second comparator C2 in-phase input end and the voltage-stablizer U4, the negative pole of the voltage-stablizer U4 is also connected with the voltage stabilizing
Device U4 benchmark pole, the resistance R26 is connected the first comparator C1 in-phase input ends with the tie point of the resistance R27.
4. band according to claim 1 turns the Switching Power Supply of circuit for lamp, it is characterised in that the common-anode LED component bag
It is red LED 2 to include the LED 1 and light color that light color is green, the LED 1
Negative electrode connects the colelctor electrode of the triode Q1 and one end of the resistance R22 respectively, and the negative electrode of LED 2 connects
Connect first comparator C1 output end.
5. band according to claim 1 turns the Switching Power Supply of circuit for lamp, it is characterised in that the inverter control circuit includes
Power management chip U1, resistance R1, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, electric capacity C3, electric capacity
C3, electric capacity C4, diode D6, switching tube Q2, wherein：
The power input pin connection resistance R1 of power management chip U1 one end, the resistance R1 other end is used as inversion control
The first input end of circuit processed, the resistance R1 other end connects the first output end of input filter circuit, the power management core
Piece U1 power input pin is also respectively connected with one end of the electric capacity C3 and one end of the resistance R4, and the electric capacity C3's is another
One end is used to be grounded, and the other end of the resistance R4 connects the negative electrode of the diode D6, the anode conduct of the diode D6
The power supply supply side of inverter control circuit, the anode of the diode D6 connects one end of the assists winding of the transformer；
The output pin of the power management chip U1 passes through the grid of the resistance R5 connections switching tube Q2, the switch
Pipe Q2 source electrode connects one end of the resistance R6 and one end of the resistance R7 respectively, and the other end of the resistance R6 connects respectively
The current detecting pin of the power management chip U1 and one end of the electric capacity C4 are connect, the other end of the electric capacity C4 is grounded,
The grounding pin ground connection of the power management chip U1, the frequency setting pin of the power management chip U1 passes through the resistance
R8 is grounded；
The digital communication pin of the power management chip U1 connects one end of the resistance R9, and the other end of the resistance R9 is made
For the first COM1 of the inverter control circuit, one end of the resistance R8 ground connection is used as the of the inverter control circuit
Two COM1s.
6. band according to claim 1 turns the Switching Power Supply of circuit for lamp, it is characterised in that the input rectifying filter circuit
Including common mode inductance LF1, rectifier bridge BD1 and electric capacity C1, wherein：
The first input end of the common mode inductance LF1 is used to connect live wire, and the second input of the common mode inductance LF1 is used to connect
Connecting to neutral line, the output end of the common mode inductance LF1 connects the input of the rectifier bridge BD1, the positive output of the rectifier bridge BD1
The positive output end as input rectifying filter circuit is held, the negative output terminal of the rectifier bridge BD1 is filtered as the input rectifying
The negative output terminal of circuit；The two ends of the electric capacity C1 connect rectifier bridge BD1 positive output end and rectifier bridge BD1 negative output respectively
End.
7. band according to claim 6 turns the Switching Power Supply of circuit for lamp, it is characterised in that the electric capacity C1 is electrolysis electricity
Hold, the positive pole of the electric capacity C1 connects the positive output end of the rectifier bridge BD1, the negative pole of the electric capacity C1 connects the rectifier bridge
BD1 negative output terminal.
8. band according to claim 1 turns the Switching Power Supply of circuit for lamp, it is characterised in that the regulator rectifier circuit includes
Diode D8 and electric capacity C5, the diode D8 anodes are connected with one end of the transformer secondary output winding, the diode D8
Negative electrode is connected with one end of the electric capacity C5, and the electric capacity C5 other ends are connected with the other end of the transformer secondary output winding.
9. band according to claim 8 turns the Switching Power Supply of circuit for lamp, it is characterised in that the electric capacity C5 is electrolysis electricity
Hold, the cathode connecting diode D8 of electric capacity C5 negative electrode, the negative electrode of the electric capacity C5 connects the another of transformer secondary output winding
One end.
10. band according to claim 1 turns the Switching Power Supply of circuit for lamp, it is characterised in that the intelligent identifying circuit bag
Include resistance 10, resistance 11, resistance R12, resistance 13, resistance R14, electric capacity C6, photo-coupler U2, fill control chip U3 and USB soon
Interface, wherein：
The control chip U3 power input pins of filling soon are described to fill control soon as the positive input terminal of the intelligent identifying circuit
Chip U3 power input pin is connected with the positive output end of the regulator rectifier circuit, one end of the resistance R10 with it is described
Control chip U3 power input pin connection is filled soon, and the other end of the resistance R10 connects the positive pole of the photo-coupler U2,
The colelctor electrode of the photo-coupler U2 is used as the first feedback end of the intelligent identifying circuit, the emitter-base bandgap grading work of the photo-coupler U2
For the second feedback end of the intelligent identifying circuit, control chip U3 is filled in the connection to the negative pole of the photo-coupler U2 soon respectively
External drive pin and the electric capacity C6 one end, the electric capacity C6 other ends fill soon by the way that the resistance R12 connections are described
Control chip U3 compensation pin, the grounding pin that control chip U3 is filled soon as the intelligent identifying circuit negative input
End, the grounding pin ground connection that control chip U3 is filled soon, the electric discharge pin that control chip U3 is filled soon connects the resistance
R11 one end, the other end of the resistance R11 connects the positive power source terminal of the USB interface, and the other end of the resistance R11 is also
The connection power input pin for filling control chip U3 soon, the positive signal pin connection that control chip U3 is filled soon is described
The positive communication ends of USB interface, the negative signal pin that control chip U3 is filled soon connects the negative communication ends of the USB interface, institute
The one end for the output circuit detection pin connection resistance R13 for filling control chip U3 soon is stated, the other end of the resistance R13 connects
The negative power end of the USB interface is connect, the other end of the resistance R13 also fills control core soon by the resistance R14 with described
Piece U3 grounding pin connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621412216.XU CN206365083U (en) | 2016-12-20 | 2016-12-20 | Band turns the Switching Power Supply of circuit for lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621412216.XU CN206365083U (en) | 2016-12-20 | 2016-12-20 | Band turns the Switching Power Supply of circuit for lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206365083U true CN206365083U (en) | 2017-07-28 |
Family
ID=59374615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621412216.XU Expired - Fee Related CN206365083U (en) | 2016-12-20 | 2016-12-20 | Band turns the Switching Power Supply of circuit for lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206365083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116131628A (en) * | 2023-04-17 | 2023-05-16 | 深圳市力生美半导体股份有限公司 | Switching power supply and lamp turning control system and chip thereof |
-
2016
- 2016-12-20 CN CN201621412216.XU patent/CN206365083U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116131628A (en) * | 2023-04-17 | 2023-05-16 | 深圳市力生美半导体股份有限公司 | Switching power supply and lamp turning control system and chip thereof |
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Granted publication date: 20170728 Termination date: 20181220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |