CN205622914U - LED drive power supply is pressed in ordinary condenser falling -rising - Google Patents
LED drive power supply is pressed in ordinary condenser falling -rising Download PDFInfo
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- CN205622914U CN205622914U CN201620180109.2U CN201620180109U CN205622914U CN 205622914 U CN205622914 U CN 205622914U CN 201620180109 U CN201620180109 U CN 201620180109U CN 205622914 U CN205622914 U CN 205622914U
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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 discloses a LED drive power supply is pressed in ordinary condenser falling -rising, this drive power supply by alternating current input end M and N, rectifier bridge DL, filter capacitor C1, fall boost circuit, PWM control circuit, voltage control circuit, drive circuit, the step drive circuit of department, output + E, GND and load LEDz and constitute. The advantage that steps down with the type switching power supply that steps up can be exert to this power, and the automatic switching that compounds, reduce output ripple voltage and carry high power factor with this, owing to realize direct current steady voltage output in whole alternating voltage wave form, output filter capacitance's capacity has been reduced, LED lamp drive power supply's filtering requirement can be satisfied with ordinary non -polar capacitor, reach the mesh that utilizes ordinary condenser to realize pressing the steady voltage to the falling -rising of LED light, LED drive power supply's life has been prolonged.
Description
Technical field
The utility model belongs to the driving power supply of general electric light source, is that a kind of utilization step-down is handed over booster type combination switch power supply
The voltage-stabilized power supply of stream direct current conversion, is concretely a kind of ordinary capacitor falling-rising pressure LED drive power.
Background technology
Switching Power Supply has volume little efficiency advantages of higher, is the LED drive power being most widely used at present.Transformerless
Booster type and adjusting and voltage-reduction switch power supply, owing to simple in construction, low cost and efficiency are high, frequently as non-isolated LED drive power.
Adjusting and voltage-reduction switch voltage-stabilized power supply, when the input voltage is lower than the output voltage, owing to ripple voltage is high, it is necessary to use unit volume to hold
Measure big electrolytic capacitor to be filtered, and power factor is low；Although step-up switching power supply power factor is high, to filter capacitor
The capacity requirement of device is little, but is only suitable for high pressure occasion.On the other hand, as filter capacitor electrolytic capacitor service life only
Having thousand of hour, the LED light emitting diode of tens of thousands of with service life hours cannot mate, and these have severely impacted LED
Service life；Furthermore step-up switching power supply is designed with inputting and power output isolating diode, fast diode (or Schottky
Diode) tube voltage drop at 0.7V-1.2V, and the driving voltage great majority of LED illumination lamp are all in the range of 12V-50V,
This reduces the efficiency of LED drive power largely.Therefore, step-down and step-up switching power supply each excellent how are played
Point, and utilize the power field effect pipe that conducting resistance is little to substitute isolating diode, to reduce loss further, provide a kind of without electricity
The LED drive power that electrolysis condenser, power factor and efficiency are high, volume is little has become as current power electronic technology field urgently
The problem solving.
Utility model content
For the deficiencies in the prior art, the technical problems to be solved in the utility model is to provide a kind of ordinary capacitor falling-rising pressure LED
Drive power supply.This driving power supply can play the respective advantage of step-down and step-up switching power supply, and carries out compound conversion automatically, with
This reduces output ripple voltage and improves power factor, reaches the purpose utilizing ordinary capacitor to be filtered.
The utility model solves its technical problem and be employed technical scheme comprise that, a kind of ordinary capacitor falling-rising pressure LED drive power
By alternating current input M and N, rectifier bridge DL, filter condenser C1, falling-rising volt circuit, pwm control circuit, voltage control
Circuit processed, drive circuit, synchronous drive circuit, output+E, GND and load LEDz composition.Described falling-rising volt circuit by
The 1st, switching tube V1 and switching tube V2, synchronous rectification switch pipe V3, sustained diode export isolating diode D2, inductance L
Armature winding N1 and secondary windings N2, output capacitor C2, startup resistance Rq, Voltage Feedback resistance RL composition；Described
Pwm control circuit is made up of single-ended PWM voltage stabilizing control chip and the corresponding matching element with power factor emendation function,
PWM voltage stabilizing control chip be provided with Voltage Feedback control end F, start voltage end a, output b, direct-current working volts end Vc and
GND；Described voltage control circuit is relatively held c, direct-current working volts end Vc by the input d of voltage, output e, voltage ratio
Constitute with GND；Described drive circuit by input m, high drive input f, low-voltage driving end n, high drive end g,
High pressure suspending ground end h, direct-current working volts end Vc and GND are constituted；Described synchronous drive circuit is by input q, output
The input of s and this circuit forms with the common port r of output.
Fig. 1 is a kind of ordinary capacitor falling-rising pressure LED drive power circuit schematic diagram, and a kind of ordinary capacitor falling-rising pressure LED drives
The concrete annexation of the dynamic each circuit of power supply is: the positive pole of alternating current rectified bridge DL output direct current and the one of filter condenser C1
End, start one end of resistance Rq, the voltage ratio in voltage control circuit relatively holds c to be connected with the drain electrode of switching tube V1, rectification
The direct current negative pole of bridge DL output is connected with the GND of each circuit in the other end of filter condenser C1, power supply and the GND of each element,
The source electrode of the switching tube V1 in falling-rising volt circuit is connected with one end of the armature winding N1 of inductance L and the negative pole of sustained diode 1,
The other end of armature winding N1 and the positive pole, the drain electrode of switching tube V2 and the synchronous rectification switch pipe V3 that export isolating diode D2
Source electrode, the common port r in synchronous drive circuit be connected with one end of inductance L secondary windings N2, inductance L secondary windings N2
The other end be connected with the input q in synchronous drive circuit, one end of the output capacitor C2 in falling-rising volt circuit and output
+ E is connected with the drain electrode of synchronous rectification switch pipe V3 with one end, the negative pole of output isolating diode D2 of load LEDz；PWM
The high drive input f with the input d in voltage control circuit with in drive circuit for the output b in control circuit is connected
Connect；Output e in voltage control circuit is connected with the input m in drive circuit, the feedback control in pwm control circuit
End F processed is connected with one end of the Voltage Feedback resistance RL in falling-rising volt circuit, the other end of Voltage Feedback resistance RL and output
Direct-current working volts end Vc in end+E and voltage control circuit connects；High drive end g in drive circuit and falling-rising piezoelectricity
The grid of the switching tube V1 in road is connected, and the high pressure suspending ground end h in drive circuit is with the switching tube V1's in falling-rising volt circuit
Source electrode is connected, and the low-voltage driving end n in drive circuit connects with the grid of the switching tube V2 in falling-rising volt circuit；Synchronization drives electricity
Output s in road is connected with the grid of the synchronous rectification switch pipe V3 in falling-rising volt circuit, the input in synchronous drive circuit
One end of the secondary windings N2 with the inductance L in falling-rising volt circuit for the q is connected.
Fig. 2 is voltage control circuit schematic diagram, inside described voltage control circuit by adjustable resistance w, resistance R1, R2, R3,
R4, R5 and R6, triode BG1, voltage comparator U1 and luminous tube LED are constituted；Its connected mode is that voltage ratio relatively holds c
Be connected with one end and the intermediate ends of adjustable resistance w, the other end of adjustable resistance w and one end of resistance R1 and voltage comparator U1
Input+end be connected, one end of the other end of resistance R1 and resistance R2, the emitter stage of triode BG1, luminous tube LED negative
Pole is connected with GND, the confession of one end of direct-current working volts end Vc and resistance R4, one end of resistance R3 and voltage comparator U1
Electricity end is connected, and the other end of resistance R3 is connected with the input-end of voltage comparator U1 and one end of resistance R2, and resistance R4's is another
One end is connected with the output of voltage comparator U1 and the base stage of triode BG1, the colelctor electrode of output e and triode BG1,
One end of resistance R5 is connected with one end of resistance R6, and the other end of resistance R5 is connected with input d, and luminous tube LED is just
Pole is connected with the other end of resistance R6.
Fig. 3 is synchronous drive circuit schematic diagram, described synchronous drive circuit by resistance R7 and R8, triode BG2 and BG3,
Capacitor C3, commutation diode D3, Zener diode DW1 and photoelectric receiving tube DG composition；Its connected mode is: rectification two
The positive pole of pole pipe D3 is connected with input q, and the negative pole of commutation diode D3 is connected with one end of resistance R7, and resistance R7's is another
The colelctor electrode phase of the negative pole of one end and Zener diode DW1, one end of capacitor C3, one end of resistance R8 and triode BG2
Connect, the other end of common port r and capacitor C3, the positive pole of Zener diode DW1, photoelectric receiving tube DG emitter stage and
The colelctor electrode of triode BG3 is connected, and output s is connected with the emitter stage of triode BG2 and the emitter stage of triode BG3, light
The colelctor electrode that electricity receives pipe DG is connected with the other end, the base stage of triode BG2 and BG3 of resistance R8.
Photoelectric receiving tube DG in described synchronous drive circuit constitutes photoelectricity with the luminous tube LED in described voltage control circuit
Coupler.
When the switching tube V1 in falling-rising volt circuit carries out step-down work, electric current through the armature winding N1 of inductance L1, secondary around
The voltage that group N2 induces is that synchronous drive circuit is powered, the photoelectric receiving tube DG in synchronous drive circuit and voltage control circuit
The photoelectrical coupler of interior luminous tube LED composition, drives synchronous rectification switch pipe V3 to work asynchronously with switching tube V1, synchronizes whole
Output capacitor C2 is charged by stream switching tube V3 and isolating diode D2, and powers for load LEDz.
When switching tube V1 and V2 in falling-rising volt circuit carries out boosting work simultaneously, electric current is through the armature winding N1 of inductance L1
When, at switching tube V1, V2 shutdown moment, sustained diode 1 be will be stored in the electric energy in inductance L through output isolation two poles
Output capacitor C2 is charged by pipe D2 and synchronous rectification switch pipe V3, the photoelectric receiving tube DG in synchronous drive circuit with
The photoelectrical coupler of the luminous tube LED composition in voltage control circuit drives synchronous rectification switch pipe V3 in falling-rising volt circuit and opens
Close pipe V2 work in complementary fashion.
The utility model has the beneficial effects that, owing to realizing that DC voltage-stabilizing exports in whole alternating voltage waveform, reduces output
The ripple of voltage, reduces the capacity of output filter capacitor, meets, with common non-polar condenser, the filtering that LED drives power supply
Require, reach the purpose utilizing ordinary capacitor to realize to LED illumination lamp falling-rising pressure voltage stabilizing.Extend LED drive power to use
In the life-span, improve power factor and efficiency.
Brief description
Fig. 1 a kind of ordinary capacitor falling-rising pressure LED drive power circuit schematic diagram
Label in figure
1 falling-rising volt circuit
2 pwm control circuits
3 voltage control circuits
4 drive circuits
5 synchronous drive circuits
Fig. 2 voltage control circuit schematic diagram
Fig. 3 synchronous drive circuit schematic diagram
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the utility model is described in further details.
The utility model is a kind of ordinary capacitor falling-rising pressure LED drive power, and Fig. 1 is a kind of ordinary capacitor falling-rising pressure LED
Drive power circuit principle figure.This circuit is by alternating current input M and N, rectifier bridge DL, filter condenser C1, falling-rising pressure
Circuit the 1st, pwm control circuit the 2nd, voltage control circuit the 3rd, drive circuit the 4th, synchronous drive circuit the 5th, output+E, GND and
Load LEDz composition.
Described falling-rising volt circuit 1 is the 1st, defeated by switching tube V1 and switching tube V2, synchronous rectification switch pipe V3, sustained diode
Go out isolating diode D2, the armature winding N1 of inductance L and secondary windings N2, output capacitor C2, start resistance Rq, voltage
Feedback resistance RL forms；
Described pwm control circuit 2 is by with the single-ended PWM voltage stabilizing control chip of power factor emendation function and corresponding
Matching element forms, and PWM voltage stabilizing control chip is provided with Voltage Feedback control end F, starts voltage end a, output b, direct current work
Make voltage end Vc and GND；
Described voltage control circuit 3 be provided with input d, voltage ratio relatively hold c, output e and direct-current working volts end Vc with
GND；
Described drive circuit 4 is provided with the Vmosfet drive integrated circult of both-end isolation and amplifier, and high drive end g, high pressure drive
Dynamic ground end h, high drive input f, low-voltage driving end n, PWM input m, direct-current working volts end Vc and GND of suspending；
Described synchronous drive circuit 5 is made up of with the common port r of output the input of input q, output s and this circuit.
When alternating current input M and N terminates into civil power alternating current, alternating current rectified bridge DL rectification and filter condenser C1 filter
After ripple, startup voltage end a in the pwm control circuit 2 startup resistance Rq in falling-rising volt circuit 1 obtains with rectifier bridge DL
Voltage waveform after rectification, and the voltage of output+E obtaining through feedback resistance RL with Voltage Feedback control end F compares,
Export one fixed width pwm pulse voltage waveform at output b, pass to the high drive input f in drive circuit 4 and voltage
Input d in control circuit 3.After now the voltage ratio in voltage control circuit 3 relatively holds c to obtain with sinusoidal waveform rectification
Voltage waveform, when voltage is higher than setting value, is held h to drive fall by drive circuit 4 by high drive end g and high pressure suspending
Switching tube V1 in booster circuit 1 carries out the work of buck (Buck Converter) switch voltage-stabilizing；When voltage ratio relatively holds c to detect
Voltage waveform less than setting value when, by the output e of voltage control circuit 3 by the PWM input m of drive circuit 4 control
Low-voltage driving end n processed drives switching tube V2 and the switching tube V1 in falling-rising volt circuit 1 to work simultaneously, carries out boost type (Boost)
Switch voltage-stabilizing works.
When the switching tube V1 in falling-rising volt circuit 1 is operated, electric current is through the armature winding N1 of inductance L1, at secondary windings
The synchronized drive circuit of voltage 5 of N2 sensing drives synchronous rectification switch pipe V3 and the switching tube V1 in falling-rising volt circuit 1 to synchronize
Output capacitor C2 is charged by work, synchronous rectification switch pipe V3 and output isolating diode D2, and for loading LEDz
Power supply.
When V1 and V2 in falling-rising volt circuit 1 works simultaneously, when electric current is through the armature winding N1 of inductance L1, at switching tube
V1, V2 shutdown moment, be will be stored in the electric energy in inductance L by sustained diode 1 whole through output isolating diode D2 and synchronization
Output capacitor C2 is charged by stream switching tube V3, the photoelectric receiving tube DG in synchronous drive circuit 5 and voltage control circuit
The photoelectrical coupler of the luminous tube LED composition in 3 drives synchronous rectification switch pipe V3 and the switching tube V2 in falling-rising volt circuit 1
Work in complementary fashion.
Fig. 2 is the schematic diagram of the voltage control circuit 3 of a kind of ordinary capacitor falling-rising pressure LED drive power, when voltage ratio is relatively held
C rectifier bridge DL rectification detected after voltage waveform after, be adjusted to predetermined value through adjustable resistance w and resistance R1 dividing potential drop, give electricity
Input+the end of pressure comparator U1, and carried out the input-end of the reference voltage comparator U1 of dividing potential drop by the series connection of resistance R3 and R4
Compare；Due to the effect of the pull-up resistor R5 of voltage comparator U1 pull-up resistor R4 and triode BG1, when voltage ratio relatively
When input+the terminal voltage of device U1 is higher than voltage comparator U1 input-terminal voltage, voltage comparator U1 output exports high potential,
Triode BG1 turns on, the output e output electronegative potential being connected by triode BG1 colelctor electrode.Input as voltage comparator U1
When+terminal voltage is less than voltage comparator U1 input-terminal voltage, voltage comparator U1 exports electronegative potential, the current collection of triode BG1
The output e output high potential that pole connects, is driven falling-rising volt circuit by through resistance R5 to input d pwm pulse through output e
Switching tube V2 work in 1, the resistance R8 in the synchronized drive circuit of luminous tube LED 5 in voltage control circuit 3 is simultaneously
Work, the photoelectric receiving tube DG work in synchronous drive circuit 5, triode BG2 and BG3 in control synchronous drive circuit 5
The synchronous rectification switch pipe V3 in falling-rising volt circuit 1 is driven to carry out switch.
Owing to the utility model is by voltage-dropping type (Buck Converter) and booster type (Boost) Switching Power Supply Application of composite, play two
The respective advantage of type Switching Power Supply, makes full use of the voltage waveform after rectification, reduces output filter capacitor capacity, uses
It is filtered by ordinary capacitor, can meet filtering requirements.The ordinary capacitor falling-rising pressure LED being made by the utility model
Drive power supply, have that volume is little, life-span length, efficiency and a power factor advantages of higher, be that the replacement of existing LED drive power is produced
Product.
Claims (4)
1. an ordinary capacitor falling-rising pressure LED drive power, it is characterised in that: it is made up of alternating current input M and N, rectifier bridge DL, filter condenser C1, falling-rising volt circuit (1), pwm control circuit (2), voltage control circuit (3), drive circuit (4), synchronous drive circuit (5), output+E, GND and load LEDz；Described falling-rising volt circuit (1) the 1st, is exported isolating diode D2, the armature winding N1 of inductance L and secondary windings N2, output capacitor C2 by switching tube V1 and switching tube V2, synchronous rectification switch pipe V3, sustained diode, starts resistance Rq, Voltage Feedback resistance RL and form；Described pwm control circuit (2) is made up of single-ended PWM voltage stabilizing control chip and the corresponding matching element with power factor emendation function, and PWM voltage stabilizing control chip is provided with Voltage Feedback control end F, starts voltage end a, output b, direct-current working volts end Vc and GND；Described voltage control circuit (3) is relatively held c, direct-current working volts end Vc and GND to constitute by the input d of voltage, output e, voltage ratio；Described drive circuit (4) by input m, high drive input f, low-voltage driving end n, high drive end g, hold h, direct-current working volts end Vc and GND to constitute high pressure suspending；Described synchronous drive circuit (5) is made up of with the common port r of output the input of input q, output s and this circuit.
null2. ordinary capacitor falling-rising according to claim 1 pressure LED drive power，It is characterized in that: the positive pole of alternating current rectified bridge DL output direct current and one end of filter condenser C1、Start one end of resistance Rq、Voltage ratio in voltage control circuit (3) relatively holds c to be connected with the drain electrode of the switching tube V1 in falling-rising volt circuit (1)，The direct current negative pole of rectifier bridge DL output and the other end of filter condenser C1、In power supply, the GND of each circuit is connected with the GND of each element，The source electrode of the switching tube V1 in falling-rising volt circuit (1) is connected with one end of the armature winding N1 of inductance L and the negative pole of sustained diode 1，The other end of armature winding N1 and the positive pole exporting isolating diode D2、The drain electrode of switching tube V2 and the source electrode of synchronous rectification switch pipe V3、Common port r in synchronous drive circuit (5) is connected with one end of inductance L secondary windings N2，The other end of inductance L secondary windings N2 is connected with the input q in synchronous drive circuit (5)，One end of output capacitor C2 in falling-rising volt circuit (1) and output+E and the one end loading LEDz、The negative pole of output isolating diode D2 is connected with the drain electrode of synchronous rectification switch pipe V3；Output b in pwm control circuit (2) is connected with the high drive input f in the input d in voltage control circuit (3) and drive circuit (4)；Output e in voltage control circuit (3) is connected with the input m in drive circuit (4), FEEDBACK CONTROL end F in pwm control circuit (2) is connected with one end of the Voltage Feedback resistance RL in falling-rising volt circuit (1), and the other end of Voltage Feedback resistance RL connects with the direct-current working volts end Vc in output+E and voltage control circuit (3)；High drive end g in drive circuit (4) is connected with the grid of the switching tube V1 in falling-rising volt circuit (1), high pressure suspending ground end h in drive circuit (4) is connected with the source electrode of the switching tube V1 in falling-rising volt circuit (1), and the low-voltage driving end n in drive circuit (4) connects with the grid of the switching tube V2 in falling-rising volt circuit (1)；Output s in synchronous drive circuit (5) is connected with the grid of the synchronous rectification switch pipe V3 in falling-rising volt circuit (1), and one end of the secondary windings N2 with the inductance L in falling-rising volt circuit (1) for the input q in synchronous drive circuit (5) is connected.
3. ordinary capacitor falling-rising according to claim 1 and 2 pressure LED drive power, it is characterised in that: described voltage control circuit (3) is internal to be made up of adjustable resistance w, resistance R1, R2, R3, R4, R5 and R6, triode BG1, voltage comparator U1 and luminous tube LED；nullIts connected mode is that voltage ratio relatively holds c to be connected with one end and the intermediate ends of adjustable resistance w、The other end of adjustable resistance w is connected with one end of resistance R1 and the input+end of voltage comparator U1，The other end of resistance R1 and one end of resistance R2、The emitter stage of triode BG1、The negative pole of luminous tube LED is connected with GND，One end of direct-current working volts end Vc and resistance R4、One end of resistance R3 is connected with the feeder ear of voltage comparator U1，The other end of resistance R3 is connected with the input-end of voltage comparator U1 and one end of resistance R2，The other end of resistance R4 is connected with the output of voltage comparator U1 and the base stage of triode BG1，The colelctor electrode of output e and triode BG1、One end of resistance R5 is connected with one end of resistance R6，The other end of resistance R5 is connected with input d，The positive pole of luminous tube LED is connected with the other end of resistance R6.
4. ordinary capacitor falling-rising according to claim 1 and 2 pressure LED drive power, it is characterised in that: described synchronous drive circuit (5) is made up of resistance R7 and R8, triode BG2 and BG3, capacitor C3, commutation diode D3, Zener diode DW1 and photoelectric receiving tube DG；Its connected mode is: the positive pole of commutation diode D3 is connected with input q, the negative pole of commutation diode D3 is connected with one end of resistance R7, the other end of resistance R7 and the negative pole of Zener diode DW1, one end of capacitor C3, one end of resistance R8 is connected with the colelctor electrode of triode BG2, the other end of common port r and capacitor C3, the positive pole of Zener diode DW1, the emitter stage of photoelectric receiving tube DG is connected with the colelctor electrode of triode BG3, output s is connected with the emitter stage of triode BG2 and the emitter stage of triode BG3, the colelctor electrode of photoelectric receiving tube DG and the other end of resistance R8, the base stage of triode BG2 with BG3 is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620180109.2U CN205622914U (en) | 2016-03-08 | 2016-03-08 | LED drive power supply is pressed in ordinary condenser falling -rising |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620180109.2U CN205622914U (en) | 2016-03-08 | 2016-03-08 | LED drive power supply is pressed in ordinary condenser falling -rising |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622914U true CN205622914U (en) | 2016-10-05 |
Family
ID=57035357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620180109.2U Expired - Fee Related CN205622914U (en) | 2016-03-08 | 2016-03-08 | LED drive power supply is pressed in ordinary condenser falling -rising |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105592596A (en) * | 2016-03-08 | 2016-05-18 | 李香龙 | Common capacitor buck-boost LED driving power supply |
| CN107360648A (en) * | 2017-07-28 | 2017-11-17 | 株洲麦格米特电气有限责任公司 | A kind of two paths of LED of Buck topologys flows drive circuit |
| CN109688654A (en) * | 2017-10-19 | 2019-04-26 | 天津理工大学 | A kind of New LED driving circuit using non-polar condenser |
-
2016
- 2016-03-08 CN CN201620180109.2U patent/CN205622914U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105592596A (en) * | 2016-03-08 | 2016-05-18 | 李香龙 | Common capacitor buck-boost LED driving power supply |
| CN107360648A (en) * | 2017-07-28 | 2017-11-17 | 株洲麦格米特电气有限责任公司 | A kind of two paths of LED of Buck topologys flows drive circuit |
| CN109688654A (en) * | 2017-10-19 | 2019-04-26 | 天津理工大学 | A kind of New LED driving circuit using non-polar condenser |
| CN109688654B (en) * | 2017-10-19 | 2023-12-12 | 天津理工大学 | LED driving circuit adopting nonpolar capacitor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20170308 |
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| CF01 | Termination of patent right due to non-payment of annual fee |