CN107889314A - Touch dimmer LED power and its design method with memory function - Google Patents
Touch dimmer LED power and its design method with memory function Download PDFInfo
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- CN107889314A CN107889314A CN201711283333.XA CN201711283333A CN107889314A CN 107889314 A CN107889314 A CN 107889314A CN 201711283333 A CN201711283333 A CN 201711283333A CN 107889314 A CN107889314 A CN 107889314A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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Abstract
Touch dimmer LED power and its design method with memory function, including rectification start-up circuit, constant-current driven chip, charge reserves circuit, compensation circuit, mu balanced circuit, touch dimmer chip and LED diode illuminating circuits, rectification start-up circuit powers 220V AC rectifications into DC voltage to constant-current driven chip, constant-current driven chip is set to start work, constant-current driven chip is powered to charging reserves circuit, charge reserves circuit charge storage electricity, LED diodes illuminating circuit is set to be in state to be driven, charging reserves circuit exports stable DC voltage to constant-current driven chip continued power by compensation circuit, and 5V DC voltage is exported to touch dimmer chip power supply by mu balanced circuit.Present invention design charging reserves circuit in driving power, improve the electrical stability of constant-current driven chip and touch dimmer chip in touch dimmer LED power, circuit structure is simple, realizes brightness memory function, improves the use reliability and stability of touch dimmer LED power.
Description
Technical field
The present invention relates to a kind of touch dimmer LED power and its design method with memory function, belong to LED circuit skills
Art field.
Background technology
LED is a kind of semiconductor devices that electric energy can be converted into luminous energy, and it lights different from incandescent lamp tungsten filament
The principle to be lighted with electricity-saving lamp tricolor powder, but use electroluminescence.In modern society, because LED small volumes, life-span
The advantages that length, light efficiency are high, radiationless and low-power consumption causes people to use LED light fixtures of the LED as light source more and more widely.
As the research to touch adjusting control circuit is also more and more, LED adjustable light power supplies also move towards market.
CN104869720A, is related to a kind of adjustable LED light fixture and its light-dimming method, and adjustable LED light fixture includes drive device
The illuminating lamp being connected with drive device, the upper electronic work that drive device is used to respond in default first preset time period recover
Initial setting up.After adjustable LED light fixture and its light-dimming method are by electricity work on the drive means, a period is intercepted, is utilized
Upper electronic work in time period, which is realized, to be resetted, so in the case where traditional switch need not increase any circuit and button,
Light modulation memory can be realized and reset can be realized so that when multiple lamps are with occurring asynchronous, can be allowed to reach by resetting
To synchronous regime.
CN104582206A, a kind of switching manipulation identification circuit is disclosed, its basic thought is, at the both ends of power switch
An in parallel resistance, in the case where switching off, it can be provided by the resistance for LED controller faint required for " memory "
Electric current (about few tens of microamps).Possess the energy needed for " memory " and then consider solve the problems, such as logical operation aspect.The present invention
The LED switch that memory function is realized with minimum cost dims technology of mix colors, without remote control, without polluting the electricity of environment
Pond, the technological means without complexity.The invention provides more humane operation, and make it that the life-span of switch and LED is longer.
Reality recalls the circuit structure complexity of work(function, voltage in the light adjusting circuit of above-described existing band memory work(function
Voltage stabilizing need height.
The content of the invention
Touch dimmer LED power and its design method provided by the invention with memory function, are designed in driving power
Charge reserves circuit, improves the electrical stability of constant-current driven chip and touch dimmer chip in touch dimmer LED power, circuit
It is simple in construction, realize brightness memory function, improve the use reliability and stability of touch dimmer LED power.
It is to reach above-mentioned purpose the technical solution adopted by the present invention：
Touch dimmer LED power with memory function, it is characterised in that and whole including the rectification start-up circuit electrically connected with city
The constant-current driven chip of start-up circuit output end connection is flowed, the charging being connected respectively with constant-current driven chip and the whole start-up circuit of stream
Reserves circuit, the compensation circuit being connected with charging reserves circuit, the mu balanced circuit and mu balanced circuit being connected with charging reserves circuit
The touch dimmer chip of connection and the LED diode illuminating circuits being connected with touch dimmer chip, LED diodes illuminating circuit connect
Charging reserves circuit is connect, touch dimmer chip is connected with constant-current driven chip and connects sensing touch control electrode；Described rectification is opened
Dynamic circuit powers 220V AC rectifications into DC voltage to constant-current driven chip, constant-current driven chip is started work, permanent
Driving chip is flowed to charging reserves circuit power supply, and charge reserves circuit charge storage electricity, is in LED diode illuminating circuits
State to be driven, charging reserves circuit export stable DC voltage to constant-current driven chip continued power by compensation circuit,
And 5V DC voltage is exported to touch dimmer chip power supply by mu balanced circuit.
Preferably, described rectification start-up circuit includes protective tube F1, diode rectifier bridge E1-E4, filter capacitor C3, peace
Full discharge resistance R1, R2 and startup resistance R4, R3, diode rectification rectifier bridge E1-E4 are whole by protective tube F1 connection civil powers, stream
Stream bridge E1-E4 simultaneously meets filter capacitor C3, and filter capacitor C3 is simultaneously grounded after meeting safe-discharge resistance R1, R2, starts resistance R3, R4's
Input connects filter capacitor C3, output end access constant-current driven chip, is powered to the pin 2 of constant-current driven chip.
Preferably, described charging reserves circuit includes the switching power tube N1 being connected with the pin 5 of constant-current driven chip
And switch transformer, described switching power tube N1 1 pin are connected with the pin 5 with constant-current driven chip, switch transformer bag
Include respectively with starting primary coil NF and the LED diodes illuminating circuit company that 2 pin of rectification circuit and switching power tube N1 are connected
The secondary coil NS connect, the secondary coil NF being connected with compensation circuit and the secondary coil NF2 being connected with mu balanced circuit.
Preferably, described described primary coil NF is connected by peak voltage absorbing circuit with rectification start-up circuit,
Described peak voltage absorbing circuit includes diode E5, electric capacity C1 and resistance R5, described first secondary coil NF one end and electric capacity
C1 connections, the other end are connected with diode E5 and switching power tube N1 2 pin, diode E5 connections electric capacity C1, and electric capacity C1 simultaneously connects
It is connected after resistance R5 with rectification start-up circuit.
Preferably, described secondary coil NF is by dividing voltage regulator circuit to be connected with compensation circuit, the regulation of described partial pressure
Circuit includes divider resistance R9, R10, series resistance R6 and the diode E6 of series connection, and divider resistance R9, R10 are serially connected in secondary wire
NF both ends are enclosed, and access the pin 3 of constant-current driven chip, secondary coil NF one end connects in series resistance R6 and diode
E6 is connected directly to the other end of compensation circuit to one end of compensation circuit, the secondary coil NF other end.
Preferably, the both ends of described compensation circuit including decoupling capacitor C4, described decoupling capacitor C4 respectively with Heng Yuan
The pin 2 and pin 6 of driving chip connect, and form compensation circuit, diode E6 and secondary coil NF are respectively connected to decoupling capacitor
C4 both ends.
Preferably, described constant-current driven chip and switching power tube N1 are grounded by current detection circuit, described
Current detection circuit includes resistance R14 and grounding resistance R7, and described one end for meeting resistance R7 is driven by resistance R14 and constant current
The pin 4 of dynamic chip connects, and is connected with switching power tube N1 3 pin, grounding resistance R7 other end ground connection.
Preferably, described mu balanced circuit includes resistance R12, diode E7, decoupling capacitor C5 and Voltage stabilizing module W1, described
Secondary coil NF2 one end series resistor R12 and diode E7, decoupling capacitor C5 positive level and Voltage stabilizing module W1 1 pin, separately
One end series connection decoupling capacitor C5 negative level and 2 pin of Voltage stabilizing module are simultaneously grounded, and Voltage stabilizing module passes through sample circuit and touch dimmer
Chip connects, and described sample circuit includes filter capacitor C9, sampling capacitance C8 and frequency modulation resistance R13, described Voltage stabilizing module
3 pin connection touch dimmer chip pin 6, and pass through the pin 1 of frequency modulation resistance R13 connection touch dimmer chips, filtered electrical
Hold 3 pin of C9 one end connection Voltage stabilizing module and the pin 3 of touch dimmer chip, the other end connects sampling capacitance C8 one end and touched
The pin 4 of controlled dimming chip is simultaneously grounded, and the sampling capacitance C8 other end is connected to the pin 2 of touch dimmer chip.
Preferably, described LED diodes illuminating circuit includes diode E8, filter capacitor C2, C6 and LED diode string
Lamp, described secondary coil NS one end are sequentially connected in series diode E8, R8 one end, filter capacitor C2 positive level, filter capacitor
C6 positive level and one end of a LED diode cluster of lamps, ornamental, the secondary coil NS other end are sequentially connected in series the resistance R8 other end, filtered electrical
Hold C2 negative pole, filter capacitor C6 negative level and the other end of a LED diode cluster of lamps, ornamental.
The design method of the above-described touch dimmer LED power with memory function, its feature is in described band note
Recall design charging reserves circuit in the touch dimmer LED power of function, pass through reserves circuit and the compensation circuit and voltage stabilizing electricity of charging
The connection on road provides the DC voltage of continued smooth to constant-current driven chip and touch dimmer chip respectively, passes through the reserves electricity that charges
Road and the connection of LED diode illuminating circuits, make LED diodes illuminating circuit be in state to be driven, pass through touch dimmer core
The connection of piece and constant-current driven chip, corresponding control signal, control constant-current driven chip adjustment are sent to constant-current driven chip
To corresponding work conducting state, corresponding driving induced voltage is produced in the reserves circuit that charges, by driving sense accordingly
Answer voltage driving LED diode luminescence circuits to light, in the case where not powering off, last time work is led by constant-current driven chip
The storage of logical state, two task conducting states is consistent before and after realization, so as to realize the touch dimmer LED electricity with memory function
The brightness memory function in source.
Rectification start-up circuit is electrically connected with city in the touch dimmer LED power of the present invention, and civil power is changed into DC voltage
Backward constant-current driven chip power supply, starts constant-current driven chip, so as to charging reserves circuit power supply, make charging reserves circuit
Charge storage electricity, and by the connection of charge reserves circuit and compensation circuit, provide and continue and more to constant-current driven chip
Smoothly straight ordinary telegram pressure, by the connection of charge reserves circuit and mu balanced circuit, provided to touch dimmer chip more stable
Straight ordinary telegram pressure, by the connection of charge reserves circuit and LED diode illuminating circuits, it is in LED diodes illuminating circuit and treats
Driving condition, by the connection of touch dimmer chip and constant-current driven chip, realize touch dimmer chip to constant-current driven chip
Control, when touch sensible touch control electrode to touch dimmer chip input human body sensing touching signals, control touch dimmer chip
Corresponding control signal is sent to constant-current driven chip, control constant-current driven chip is adjusted to the conducting state that works accordingly,
Corresponding driving induced voltage is produced in charging reserves circuit, by driving induced voltage to drive LED diode luminescences electric accordingly
Road lights, in the case where not powering off, the storage for the conducting state that worked by constant-current driven chip the last time, two before and after realization
Task conducting state it is consistent, so as to realize the brightness memory function of the touch dimmer LED power with memory function.
Present invention design charging reserves circuit in driving power, not only improve constant current in touch dimmer LED power and drive
The electrical stability of chip and touch dimmer chip, and realize that the sensing driving of LED diode illuminating circuits is luminous, circuit knot
Structure is simple, in the case where not powering off, storage of the constant-current driven chip to the last admittance shape that works, leads front and rear two task
Logical state consistency, the luminous driving induced voltage of identical driving LED diodes illuminating circuit is produced in the reserves circuit that charges,
So as to realize the brightness memory function of the touch dimmer LED power with memory function.
Compensation circuit, the design of mu balanced circuit in the present invention, the induced voltage for the reserves circuit storage that charges is changed into surely
The advection voltage of pressure, constant-current driven chip and touch dimmer chip is set to be continued, stablized and meet respective working condition demand
DC voltage, improve the power supply stationarity of constant-current driven chip and touch dimmer chip, improve touch dimmer LED power
Use reliability and stability.
Brief description of the drawings
Fig. 1 is the circuit structure block diagram of the touch dimmer LED power with memory function in embodiment.
Fig. 2 is the circuit theory diagrams of the touch dimmer LED power with memory function in embodiment.
Embodiment
1-2 elaborates to embodiments of the invention below in conjunction with the accompanying drawings.
Touch dimmer LED power with memory function, it is characterised in that including the rectification start-up circuit electrically connected with city,
The constant-current driven chip being connected with rectification start-up circuit output end, it is connected respectively with constant-current driven chip and the whole start-up circuit of stream
Charge reserves circuit, the compensation circuit being connected with charging reserves circuit, the mu balanced circuit being connected with charging reserves circuit and voltage stabilizing
The touch dimmer chip of circuit connection and the LED diode illuminating circuits being connected with touch dimmer chip, the luminous electricity of LED diodes
Road connection charging reserves circuit, touch dimmer chip are connected with constant-current driven chip and connect sensing touch control electrode；Described is whole
Flow start-up circuit 220V AC rectifications are powered into DC voltage to constant-current driven chip, constant-current driven chip is started work
Make, to charging reserves circuit power supply, charge constant-current driven chip reserves circuit charge storage electricity, makes the luminous electricity of LED diodes
Road is in state to be driven, and charging reserves circuit exports stable DC voltage by compensation circuit to be continued to constant-current driven chip
Power supply, and 5V DC voltage is exported to touch dimmer chip power supply by mu balanced circuit.Touch sensible touch control electrode is to touch-control
Chip input human body sensing touching signals are dimmed, control touch dimmer chip sends corresponding control letter to constant-current driven chip
Number, control constant-current driven chip is adjusted to the conducting state that works accordingly, and corresponding driving sense is produced in the reserves circuit that charges
Voltage is answered, by driving induced voltage to drive LED diode luminescence circuits to light accordingly.
Rectification start-up circuit is electrically connected with city in above-described touch dimmer LED power, and civil power is changed into direct current
Press backward constant-current driven chip to power, start constant-current driven chip, so as to charging reserves circuit power supply, make charging reserves electric
Road charge storage electricity, and by the connection of charge reserves circuit and compensation circuit, provide and continue and more to constant-current driven chip
Add smoothly straight ordinary telegram pressure, by the connection of charge reserves circuit and mu balanced circuit, provided to touch dimmer chip more steady
Straight ordinary telegram pressure, by the connection of charge reserves circuit and LED diode illuminating circuits, be in LED diode illuminating circuits
State to be driven, by the connection of touch dimmer chip and constant-current driven chip, realize that touch dimmer chip drives core to constant current
The control of piece, when touch sensible touch control electrode inputs human body sensing touching signals, control touch dimmer core to touch dimmer chip
Piece sends corresponding control signal to constant-current driven chip, and control constant-current driven chip is adjusted to the conducting state that works accordingly,
Corresponding driving induced voltage is produced in the reserves circuit that charges, by driving induced voltage to drive LED diode luminescences accordingly
Circuit lights, and in the case where not powering off, storage of the constant-current driven chip to the last admittance shape that works, makes front and rear two task
Conducting state is consistent, and the luminous driving induced electricity of identical driving LED diodes illuminating circuit is produced in the reserves circuit that charges
Pressure, so as to realize the brightness memory function of the touch dimmer LED power with memory function.
Wherein, described rectification start-up circuit includes protective tube F1, diode rectifier bridge E1-E4, filter capacitor C3, safety
Discharge resistance R1, R2 and startup resistance R4, R3, diode rectification rectifier bridge E1-E4 pass through protective tube F1 connection civil powers, flow rectification
Bridge E1-E4 simultaneously meets filter capacitor C3, and filter capacitor C3 is simultaneously grounded after meeting safe-discharge resistance R1, R2, starts the defeated of resistance R3, R4
Enter end connection filter capacitor C3, output end access constant-current driven chip, powered to the pin 2 of constant-current driven chip.
Wherein, described charging reserves circuit include the switching power tube N1 that is connected with the pin 5 of constant-current driven chip and
Switch transformer, described switching power tube N1 1 pin are connected with the pin 5 with constant-current driven chip, and switch transformer includes
Respectively with starting primary coil NF that rectification circuit and switching power tube N1 2 pin are connected, being connected with LED diode illuminating circuits
Secondary coil NS, the secondary coil NF being connected with compensation circuit and the secondary coil NF2 being connected with mu balanced circuit.Described fills
Electric reserves circuit is used for charge storage electricity, and the electricity of storage is formed into induced electricity in the secondary coil of charging reserves circuit
Pressure, the DC voltage for turning to be converted into induced voltage needed for touch dimmer chip by mu balanced circuit are carried out to touch dimmer chip
Power supply, the DC voltage for turning to be converted into induced voltage needed for constant-current driven chip by compensation circuit enter to constant-current driven chip
Row power supply, and LED diodes illuminating circuit is in state to be driven.
Wherein, described primary coil NF is connected by peak voltage absorbing circuit with rectification start-up circuit, described point
Peak voltage absorpting circuit includes diode E5, electric capacity C1 and resistance R5, described first secondary coil NF one end are connected with electric capacity C1, separately
One end is connected with diode E5 and switching power tube N1 2 pin, after diode E5 connections electric capacity C1, electric capacity C1 and connecting resistance R5 with
Rectification start-up circuit connects.Pass through peak voltage absorbing circuit dust suction peak voltage, the voltage stability of raising charging reserves circuit.
Wherein, described secondary coil NF is by dividing voltage regulator circuit to be connected with compensation circuit, described partial pressure regulation electricity
Road includes divider resistance R9, R10, series resistance R6 and the diode E6 of series connection, and divider resistance R9, R10 are serially connected in secondary coil
NF both ends, and access the pin 3 of constant-current driven chip, secondary coil NF one end connect in series resistance R6 and diode E6
To one end of compensation circuit, the secondary coil NF other end is connected directly to the other end of compensation circuit.
The both ends of described compensation circuit including decoupling capacitor C4, described decoupling capacitor C4 respectively with permanent source drive chip
Pin 2 and pin 6 connect, form compensation circuit, diode E6 and secondary coil NF are respectively connected to decoupling capacitor C4 both ends.
Voltage regulator circuit is divided to carry out partial pressure regulation to the induced voltage in secondary coil NF, then by compensation circuit voltage stabilizing, persistently to perseverance
Flow driving chip and carry out stable power-supplying.
Wherein, described constant-current driven chip and switching power tube N1 are grounded by current detection circuit, described electricity
Current detection circuit includes resistance R14 and grounding resistance R7, and described one end for meeting resistance R7 is driven by resistance R14 and constant current
The pin 4 of chip connects, and is connected with switching power tube N1 3 pin, grounding resistance R7 other end ground connection.Pass through current detecting
Circuit carries out ground protection to constant-current driven chip and switching power tube N1.
Wherein, described mu balanced circuit includes resistance R12, diode E7, decoupling capacitor C5 and Voltage stabilizing module W1, described
Secondary coil NF2 one end series resistor R12 and diode E7, decoupling capacitor C5 positive level and Voltage stabilizing module W1 1 pin, it is another
End series connection decoupling capacitor C5 negative level and 2 pin of Voltage stabilizing module are simultaneously grounded, and Voltage stabilizing module passes through sample circuit and touch dimmer core
Piece connects, and described sample circuit includes filter capacitor C9, sampling capacitance C8 and frequency modulation resistance R13, and the 3 of described Voltage stabilizing module
Pin connects the pin 6 of touch dimmer chip, and passes through the pin 1 of frequency modulation resistance R13 connection touch dimmer chips, filter capacitor C9
3 pin of one end connection Voltage stabilizing module and the pin 3 of touch dimmer chip, other end connection sampling capacitance C8 one end and touch-control are adjusted
The pin 4 of optical chip is simultaneously grounded, and the sampling capacitance C8 other end is connected to the pin 2 of touch dimmer chip.With Voltage stabilizing module pair
Secondary coil NF2 induced voltage carries out rectifying and voltage-stabilizing, exports 5V DC voltage to touch dimmer chip.Pass through sample circuit
Ground protection is carried out to mu balanced circuit and touch dimmer chip.
Preferably, described LED diodes illuminating circuit includes diode E8, filter capacitor C2, C6 and LED diode string
Lamp, described secondary coil NS one end are sequentially connected in series diode E8, R8 one end, filter capacitor C2 positive level, filter capacitor
C6 positive level and one end of a LED diode cluster of lamps, ornamental, the secondary coil NS other end are sequentially connected in series the resistance R8 other end, filtered electrical
Hold C2 negative pole, filter capacitor C6 negative level and the other end of a LED diode cluster of lamps, ornamental.With diode E8, filter capacitor C2, C6 couple
Induced voltage caused by secondary coil NS is filtered rectification, improves the electrical stability of a LED diode cluster of lamps, ornamental.
The design method of the above-described touch dimmer LED power with memory function, its feature is in described band note
Recall design charging reserves circuit in the touch dimmer LED power of function, pass through reserves circuit and the compensation circuit and voltage stabilizing electricity of charging
The connection on road provides the DC voltage of continued smooth to constant-current driven chip and touch dimmer chip respectively, passes through the reserves electricity that charges
Road and the connection of LED diode illuminating circuits, make LED diodes illuminating circuit be in state to be driven, pass through touch dimmer core
The connection of piece and constant-current driven chip, corresponding control signal, control constant-current driven chip adjustment are sent to constant-current driven chip
To corresponding work conducting state, corresponding driving induced voltage is produced in the reserves circuit that charges, by driving sense accordingly
Answer voltage driving LED diode luminescence circuits to light, in the case where not powering off, last time work is led by constant-current driven chip
The storage of logical state, two task conducting states is consistent before and after realization, so as to realize the touch dimmer LED electricity with memory function
The brightness memory function in source.
The specific embodiment of the present invention is described in detail below：
Constant-current driven chip selects BP3318 chips, and its peak power output is 50W, in a LED diode cluster of lamps, ornamental, single led two
The power of level pipe be 1W, and LED diodes number is 7 to 10 in a LED diode cluster of lamps, ornamental, and Voltage stabilizing module is Voltage stabilizing module 78L05.
Touch dimmer chip is SGL8022W chips, and the pin 7 of touch dimmer chip indicates output pin for work, and pin 2 is sampling electricity
Hold input pin, pin 3 is chip power anode, and pin 4 is chip ground end, and for pin 5 to touch regulation and control pin, pin 6 is power supply
Negative terminal, pin 6 are power supply negative terminal, and pin 7 is that PWM controls output pin.When circuit works, civil power 220V alternating currents are through protective tube
F1, then the bridge heap rectification formed through E1-E4, form stable DC voltage on filter capacitor C3.Filter capacitor C3 positive pole
Activated resistance R3, R4 supply the operating voltage of pin 2 of constant-current driven chip to voltage all the way, and constant-current driven chip is started working,
Make switching power tube N1 2 pin and the conducting of 3 pin from the output switch pulse voltage of pin 5, make the primary coil NP of switch transformer
Reserves.Caused induced voltage filters through diode E6 rectification decoupling capacitors C4 in the secondary coil NF of switch transformer,
Stable DC voltage VCC is exported to use for constant-current driven chip.Caused induced voltage is through diode in secondary coil NF2
E7 rectification decoupling capacitors C5 is filtered, there is provided 1 pin of the voltage to Voltage stabilizing module 78L05, Voltage stabilizing module 78,L05 3 pin output are steady
5V DC voltages, 5V voltages are supplied to 3 pin of touch dimmer chip, are touched when the pin 5 for touching light modulation chip is linked into sensing
The human body sensing touching signals that control electrode senses, will export corresponding control signal in the pin 7 of touch dimmer chip, lead to
Resistance R11 control constant-current driven chips are crossed, constant-current driven chip is adjusted to the conducting state that works accordingly, switching power tube N1
1 pin and 2 pin conducting, in secondary coil NB caused induced voltage through E8 rectifications C6 filter, export stable direct current
Pressure driving LED lumination of light emitting diode.
The Dimming operation of the above-described touch dimmer LED power with memory function is specially：
1st, during initial power-on, lamp is that pass is gone out state.Point touching（The touch duration is less than 550ms）When sensing touch control electrode,
The light on and off control of light can be achieved.One click Touching controlling lamp is bright；Point touching lamp goes out again, so circulation, light light or
When pass is gone out, no brightness buffering.And the original intensity that light is lighted is fixed as the 50% of full brightness.
2nd, long-press touches（The touch duration is more than 550ms）Sense touch control electrode constantly, the stepless brightness of light can be achieved
Regulation.In the case where not powering off, brightness when each point touching is turned off the light can be remembered, can be with when next point touching is turned on light
This brightness realizes brightness memory function as original intensity.In the event of a power failure, the first time point touching after re-powering
Turn on light, original intensity is fixed as the 50% of full brightness.
3rd, point touching sensing touch control electrode and long-press touch sensible touch control electrode can be used arbitrarily at any time, phase
Function is interference-free between mutually and limits.
Completely description is carried out to the technical scheme of embodiments of the invention, it is necessary to which explanation is described above in association with accompanying drawing
Embodiment be only the present invention part of the embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art exist
The every other embodiment obtained on the premise of not making creative work, belongs to the scope of protection of the invention.
Claims (10)
1. the touch dimmer LED power with memory function, it is characterised in that including the rectification start-up circuit electrically connected with city, with
The constant-current driven chip of rectification start-up circuit output end connection, filled with what constant-current driven chip and the whole start-up circuit of stream were connected respectively
Electric reserves circuit, the compensation circuit being connected with charging reserves circuit, the mu balanced circuit being connected with charging reserves circuit and voltage stabilizing electricity
The touch dimmer chip of road connection and the LED diode illuminating circuits being connected with touch dimmer chip, LED diode illuminating circuits
Connection charging reserves circuit, touch dimmer chip are connected with constant-current driven chip and connect sensing touch control electrode；Described rectification
Start-up circuit powers 220V AC rectifications into DC voltage to constant-current driven chip, constant-current driven chip is started work,
To charging reserves circuit power supply, charge constant-current driven chip reserves circuit charge storage electricity, makes at LED diode illuminating circuits
In state to be driven, charging reserves circuit exports stable DC voltage by compensation circuit and persistently supplied to constant-current driven chip
Electricity, and 5V DC voltage is exported to touch dimmer chip power supply by mu balanced circuit.
2. the touch dimmer LED power according to claim 1 with memory function, it is characterised in that described rectification starts
Circuit includes protective tube F1, diode rectifier bridge E1-E4, filter capacitor C3, safe-discharge resistance R1, R2 and startup resistance R4,
R3, diode rectification rectifier bridge E1-E4 are flowed rectifier bridge E1-E4 and meet filter capacitor C3, filtered by protective tube F1 connection civil powers
Electric capacity C3 is simultaneously grounded after meeting safe-discharge resistance R1, R2, starts resistance R3, R4 input connection filter capacitor C3, output end
Constant-current driven chip is accessed, is powered to the pin 2 of constant-current driven chip.
3. the touch dimmer LED power according to claim 1 with memory function, it is characterised in that described charging reserves
Circuit includes the switching power tube N1 and switch transformer being connected with the pin 5 of constant-current driven chip, described switching power tube
N1 1 pin is connected with the pin 5 with constant-current driven chip, and switch transformer is included respectively with starting rectification circuit and switch power
The primary coil NF of pipe N1 2 pin connection, the secondary coil NS being connected with LED diode illuminating circuits, are connected with compensation circuit
Secondary coil NF and the secondary coil NF2 that is connected with mu balanced circuit.
4. the touch dimmer LED power according to claim 3 with memory function, it is characterised in that described primary coil
NF is connected by peak voltage absorbing circuit with rectification start-up circuit, described peak voltage absorbing circuit include diode E5,
Electric capacity C1 and resistance R5, described first secondary coil NF one end are connected with electric capacity C1, the other end and diode E5 and switching power tube
N1 2 pin connect, and are connected after diode E5 connections electric capacity C1, electric capacity C1 and connecting resistance R5 with rectification start-up circuit.
5. the touch dimmer LED power that band memory work(according to claim 3 has, it is characterised in that described secondary coil
NF by dividing voltage regulator circuit to be connected with compensation circuit, the described divider resistance R9, R10 for dividing voltage regulator circuit to include series connection,
Series resistance R6 and diode E6, divider resistance R9, R10 are serially connected in secondary coil NF both ends, and access constant current driving core
The pin 3 of piece, secondary coil NF one end connect in series resistance R6 and diode E6 to one end of compensation circuit, secondary coil NF
The other end be connected directly to the other end of compensation circuit.
6. the touch dimmer LED power of band note hole function according to claim 5, it is characterised in that described compensation circuit
Including decoupling capacitor C4, described decoupling capacitor C4 both ends are connected with the pin 2 and pin 6 of permanent source drive chip respectively, shape
Into compensation circuit, diode E6 and secondary coil NF are respectively connected to decoupling capacitor C4 both ends.
7. the touch dimmer LED power of band note hole function according to claim 3, it is characterised in that described constant current driving
Chip and switching power tube N1 are grounded by current detection circuit, and described current detection circuit includes resistance R14 and ground connection
Resistance R7, described one end for meeting resistance R7 are connected by the pin 4 of resistance R14 and constant-current driven chip, and with switching work(
Rate pipe N1 3 pin connection, grounding resistance R7 other end ground connection.
8. the touch dimmer LED power of band note hole function according to claim 3, it is characterised in that described mu balanced circuit
One end series resistor including resistance R12, diode E7, decoupling capacitor C5 and Voltage stabilizing module W1, described secondary coil NF2
R12 and diode E7, decoupling capacitor C5 positive level and Voltage stabilizing module W1 1 pin, other end series connection decoupling capacitor C5 negative level and
2 pin of Voltage stabilizing module are simultaneously grounded, and Voltage stabilizing module is connected by sample circuit with touch dimmer chip, and described sample circuit includes
Filter capacitor C9, sampling capacitance C8 and frequency modulation resistance R13, the pin of the 3 pin connection touch dimmer chip of described Voltage stabilizing module
6, and by the pin 1 of frequency modulation resistance R13 connection touch dimmer chips, 3 pin of filter capacitor C9 one end connection Voltage stabilizing module and
The pin 3 of touch dimmer chip, other end connection sampling capacitance C8 one end and the pin 4 of touch dimmer chip are simultaneously grounded, and are adopted
The sample electric capacity C8 other end is connected to the pin 2 of touch dimmer chip.
9. the touch dimmer LED power of band note hole function according to claim 3, it is characterised in that described LED two levels
Pipe illuminating circuit includes diode E8, filter capacitor C2, C6 and LED diode cluster of lamps, ornamental, described secondary coil NS one end according to
Secondary concatenation diode E8, R8 one end, filter capacitor C2 positive level, the one of filter capacitor C6 positive level and a LED diode cluster of lamps, ornamental
End, the secondary coil NS other end are sequentially connected in series the resistance R8 other end, filter capacitor C2 negative pole, filter capacitor C6 negative level
With the other end of a LED diode cluster of lamps, ornamental.
10. the design method of the touch dimmer LED power with memory function described in claim 1 to any one of claim 9,
Its feature passes through the reserves electricity that charges in the design charging reserves circuit in the touch dimmer LED power with memory function
Road and the connection of compensation circuit and mu balanced circuit provide the straight of continued smooth respectively to constant-current driven chip and touch dimmer chip
Voltage is flowed, by the connection of charge reserves circuit and LED diode illuminating circuits, LED diodes illuminating circuit is in and waits to drive
Dynamic state, by the connection of touch dimmer chip and constant-current driven chip, corresponding control signal is sent to constant-current driven chip,
Control constant-current driven chip is adjusted to the conducting state that works accordingly, and corresponding driving induced electricity is produced in the reserves circuit that charges
Pressure, by driving induced voltage to drive LED diode luminescence circuits to light accordingly, in the case where not powering off, driven by constant current
Storage of the dynamic chip to the last conducting state that works, two task conducting states is consistent before and after realization, so as to realize band note
Recall the brightness memory function of the touch dimmer LED power of function.
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| CN108738203A (en) * | 2018-07-13 | 2018-11-02 | 深圳安赋特科技有限公司 | LED power invariable power input control circuit |
| CN111225474A (en) * | 2020-01-13 | 2020-06-02 | 深圳市明微电子股份有限公司 | Light source driving circuit for improving power factor, lighting system and light source driving method |
| CN112747267A (en) * | 2021-01-29 | 2021-05-04 | 吉安茹姿科技有限公司 | LED lamp strip capable of adjusting brightness |
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| CN107889314B (en) | 2023-09-29 |
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