CN203120246U - Constant voltage controller for LED lamp - Google Patents
Constant voltage controller for LED lamp Download PDFInfo
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- CN203120246U CN203120246U CN2013200588175U CN201320058817U CN203120246U CN 203120246 U CN203120246 U CN 203120246U CN 2013200588175 U CN2013200588175 U CN 2013200588175U CN 201320058817 U CN201320058817 U CN 201320058817U CN 203120246 U CN203120246 U CN 203120246U
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to a constant voltage controller for an LED lamp. The controller consists of a storage battery charging control circuit, a storage battery discharging protection circuit, a load switch circuit and a constant voltage circuit. The storage battery charging control circuit comprises an overcharge protection circuit, an integration operation comparison circuit, and a charging circuit; the storage battery discharging protection circuit comprises a Schmitt trigger, resistors and potentiometers; the constant voltage circuit comprises an integrated voltage-stabiliser tube, a sample amplifier, a field effect transistor, a diode, a voltage stabilizing diode, resistors, triodes and a potentiometer; and the load switch circuit comprises a comparators, resistors, a diode, a capacitor and a filed effect transistor. The constant voltage controller for an LED lamp has the advantages of automatic voltage identification, and constant voltage supply to the LED at all times, constant luminance of the LED, high universality, little power consumption, high reliability, small size, light weight and the like.
Description
Technical field
The utility model belongs to the LED lighting technical field, relates to a kind of LED lamp constant-voltage controller of meter.
Background technology
The LED driving governor of prior art mainly is that the needs according to enterprise self product design, and does not have unified standard scheme, and the circuit complexity, and power consumption is bigger, and reliability is lower, and volume is big.The supply power voltage stability that its LED drives is also relatively poor, so, cause the brightness of LED non-constant.
Summary of the invention
The purpose of this utility model is to solve the existing in prior technology problem, provides a kind of and has the versatility height, power consumption is little, reliability is high, volume is little, supply power voltage is stable LED drives constant-voltage controller.
A kind of LED lamp constant-voltage controller is made up of storage battery charge control circuit, battery discharging protective circuit, load switching circuit, timing circuit and constant voltage circuit etc.
Described storage battery charge control circuit comprises that comparison integrated circuit U2-1 reaches resistance R 12 on every side; R13 and R14; capacitor C 1; the overcharge protection circuit of C2; comprise comparator U1-4; resistance R 9; R10 and R11; the integrated computing comparison circuit of voltage stabilizing didoe U4 and U8; also comprise diode D2; the charging circuit of D4 and field effect transistor COM1 and triode Q1; integrated voltage-stabiliser tube U6; resistance R 15 and diode D3; the positive pole of main power source is by two diode D2 in parallel and D4; one the tunnel connects the S utmost point of field effect transistor COM1; another road is by after the resistance R 15; one the tunnel connects the G utmost point of field effect transistor COM1; another road connects the collector electrode of triode Q1; the positive pole of storage battery connects the D utmost point of field effect transistor COM1 by fuse FU one tunnel; the diode D3 of leading up to connects the input 3 of integrated voltage-stabiliser tube U6; the 2 end ground connection of the negative pole of storage battery and integrated voltage-stabiliser tube U6; its output 1 output burning voltage VDD1; battery feed VCC is connected the in-phase input end 5 of comparator U1-4 by resistance R 9 one tunnel; another road is by resistance R 11 ground connection; power vd D1 connects the inverting input 4 of comparator U1-4 by resistance R 10; ground connection behind the voltage stabilizing didoe U4 of inverting input 4 reversal connections series connection and the U8; the supply pin of comparator U1-4 meets power vd D1; grounding leg ground connection; connect power vd D1 behind its output 2 one tunnel series resistance R13; after one tunnel connection resistance R 12; one the tunnel connects relatively trigger voltage end 8 pin of integrated circuit U2-1; lead up to capacitor C 1 ground connection; relatively reset terminal 10 pin of integrated circuit U2-1 connect power vd D1; trigger voltage end 8 pin are connected with threshold voltage end 12 pin; control voltage end 11 pin are by capacitor C 2 ground connection; 13 pin ground connection; output 9 pin Q are connected the base stage of triode Q1, the grounded emitter of triode Q1 after by resistance R 14.
Described battery discharging protective circuit comprises Schmidt trigger U2-2; resistance R 16; R17; R20 and R21; potentiometer R18 and R19; battery feed VCC connects Schmidt trigger U2-2 threshold voltage end 2 pin by resistance R 16 one tunnel; lead up to potentiometer R18 ground connection; battery feed VCC connects Schmidt trigger U2-2 trigger voltage end 6 pin by resistance R 17 one tunnel; lead up to potentiometer R19 ground connection; reset terminal 4 pin power ends 14 pin of Schmidt trigger U2-2 connect power vd D1; output 5 pin Q connect inverting input 8 pin of comparator U1-3 by R21; 1 pin and 7 pin ground connection; control voltage end 3 pin CO connect the inverting input 4 of comparator U1-4, and power vd D1 connects inverting input 8 pin of comparator U1-3 by resistance R 20.
Described load switching circuit comprises comparator U1-1, U1-2 and U1-3, resistance R 1, R2, R3, R4, R5, R6, R7 and R8, diode D1, capacitor C 3 and field effect transistor COM2, the in-phase input end 11 of comparator U1-1 is leaded up to resistance R 1 and is connected power vd D1, another road is along connecing ground connection behind the diode D1, its inverting input 10 connects the positive pole of main power source by resistance R 7, its output 13 is leaded up to resistance R 2 and is connected power vd D1, another road connects the in-phase input end 7 of comparator U1-2 by resistance R 6 backs, the in-phase input end 7 of comparator U1-2 is also by capacitor C 3 ground connection, the inverting input 6 of comparator U1-2 connects the inverting input 4 of comparator U1-4, its output 1 is leaded up to resistance R 3 and is connected power vd D1, another road connects the in-phase input end 9 of comparator U1-3 by resistance R 4, the in-phase input end of comparator U1-3 is also by resistance R 5 ground connection, its output 14 one tunnel connects the G utmost point of field effect transistor COM2, another road meets battery feed VCC by resistance R 8, the S utmost point ground connection of field effect transistor COM2, the D utmost point connects the negative pole of LED.
Described constant voltage circuit comprises integrated voltage-stabiliser tube U7, sampling amplifier U3, field effect transistor COM3, diode D4, voltage stabilizing didoe U9, resistance R 22, R23, R24, R25, R26, R34 and R35, triode Q2 and Q3 and potentiometer R27, power supply VCC is along connecing the input 3 that is connected integrated voltage-stabiliser tube U7 behind the diode D4,2 ends of integrated voltage-stabiliser tube U7 connect the negative pole of LED, output 1 output voltage V DD2, power supply VCC is by after the resistance R 22, one the tunnel connects the collector electrode of triode Q3, another road connects the G utmost point of field effect transistor COM3, the emitter of triode Q3 connects the LED negative pole, base stage connects the output 1 of sampling amplifier U3 by resistance R 35, the S utmost point of field effect transistor COM3 meets battery feed VCC, the positive pole of its D utmost point LED, power vd D2 connects the in-phase input end 3 of sampling amplifier U3 by resistance R 24 one tunnel, another road connects the negative pole of LED by voltage stabilizing didoe U9,4 pin of sampling amplifier U3 connect the negative pole of LED, 8 pin meet power vd D2, inverting input 2 connects its output 1 by resistance R 23, LED is anodal by after the resistance R 25, one the tunnel connects the inverting input 2 of sampling amplifier U3, another road is by the negative pole of resistance R 26 back LED, the inverting input 2 of sampling amplifier U3 is also by being connected the collector electrode of triode Q2, the negative pole of the emitter connection LED of triode Q2 behind resistance R 34 and the potentiometer R27.
Described timing circuit comprises timing integration block U5, field effect transistor COM4, resistance R 28, R29, R30, R31, R32 and R33, capacitor C 4,12 pin of timing integration block U5, after 13 pin and the interconnection of 14 pin, be connected on the power vd D1, after 1 pin connects resistance R 28, after 2 pin connect capacitor C 4,3 pin are interconnected after connecting resistance R 29,5 pin connect ground connection behind 10 pin, 6 pin are by resistance R 30 ground connection, 9 pin power vd D1, behind the power vd D1 series resistance R31, one the tunnel connects 6 pin, one the tunnel connects the D utmost point of field effect transistor COM4,8 pin connect the base stage of triode Q2 by resistance R 33 backs, the S utmost point ground connection of field effect transistor COM4, the G utmost point connect the output 1 of comparator U1-2 by resistance R 32.
At first, to charge in batteries, power supply is to charge in batteries the time by field effect transistor COM1, diode D2 and D4 for power end, and diode D2 and the D4 charging current that enlarges in parallel also prevents from having a power failure or voltage instability battery pack back discharge regularly simultaneously.When power supply is unstable, when the 10 pin voltages of the comparator U1-1 of load switching circuit were reduced to 0.4V, its 13 pin output high level was sent into 7 pin of comparator U1-2, opens field effect transistor COM 2 through comparator U1-3 again by 1 pin of comparator U1-2, storage battery is powered to LED, and LED is shinny.Field effect transistor COM1 is by overcharge protection circuit and the control of integrated computing comparison circuit; integrated computing comparison circuit will be adhered to passes through battery tension VCC after resistance R 9 and the R11 dividing potential drop and delivers to 5 pin of comparator U1-4 and 4 pin reference voltages relatively; when accumulator battery voltage is charged to 18.8V or 14.4V; the 2 pin output high level of comparator U1-4; integrated computing comparison circuit U2-1 output low level; triode Q1 is ended; the collector electrode C of triode Q1 is high level; turn-off field effect transistor COM1; stop battery charging, prevent that the batteries overvoltage from damaging.When the voltage of batteries falls back to 28.8V or below the 14.4V, the counter-rotating of 2 pin of comparator U1-4, relatively integrated circuit U2-1 opens field effect transistor COM1, continues battery charging.When storage battery is powered to LED; the battery discharging protective circuit starts; that is: relatively the 3 pin CO of integrated circuit U2-2 set reference voltage; resistance R 16 and potentiometer R18 be set threshold voltage respectively; resistance R 17 and potentiometer R19 set trigger voltage respectively; when battery tension VCC is lower than trigger voltage 21.6V or 10.8V; the 5 pin Q end output high level of Schmidt trigger circuit U2-2; deliver to comparator U1-3; close the LED load; VCC voltage gos up to 23-25V or 1.15-12.5V, and the 5 pin Q of U2-2 end counter-rotating output low level is removed shielding, recovers operate as normal.The major function of timing circuit is regularly to close the LED load or make the output of LED micropower, timing element is made of R28, C4, timing T=2.3*32768*R28*C4 load electronic switch also starts timing circuit when opening, startup is by the D utmost point of field effect transistor COM4 6 pin to timing integration block U5, make it and the 8 pin output of LED lamp holder control signal lock in time by timing integration block U5, LED is worked, by high-power small-power work, the minimizing energy consumption of transferring under little constant pressure.Constant voltage circuit is made up of high-power FET COM 3 and sampling amplifier U3 etc., R25, R26, R34, R27 dividing potential drop are formed sampling loop, sampling voltage is delivered to 2 pin of computing sampling amplifier U3, amplify through ratio, control high-power FET COM 3, make it be operated in linear adjusting range, output is stable; The effect of triode Q2 is to change the sampling voltage ratio, and by timing circuit control, timing increases voltage ratio to the back, reduces output voltage, reduces discharge circuit, and LED is operated under the little constant voltage.
Like this, the fluctuation size of supply power voltage is all supplied with the LED constant voltage all the time, makes LED get brightness constancy.
The utlity model has that illumination effect is good, the LED life-span is long, versatility is high, power consumption is little, reliability is high, volume is little, characteristics such as in light weight and easy installation.
Description of drawings
Fig. 1 is circuit layout schematic diagram of the present utility model.
Embodiment
Please refer to Fig. 1, the utility model is made up of storage battery charge control circuit, battery discharging protective circuit, load switching circuit, timing circuit and constant voltage circuit etc.
Storage battery charge control circuit.The positive pole of main power source is by two diode D2 in parallel and D4, one the tunnel connects the S utmost point of field effect transistor COM1, another road is by after the resistance R 15, one the tunnel connects the G utmost point of field effect transistor COM1, another road connects the collector electrode of triode Q1, the positive pole of storage battery connects the D utmost point of field effect transistor COM1 by fuse FU one tunnel, the diode D3 of leading up to connects the input 3 of integrated voltage-stabiliser tube U6, the 2 end ground connection of the negative pole of storage battery and integrated voltage-stabiliser tube U6, its output 1 output burning voltage VDD1, battery feed VCC is connected the in-phase input end 5 of comparator U1-4 by resistance R 9 one tunnel, another road is by resistance R 11 ground connection, power vd D1 connects the inverting input 4 of comparator U1-4 by resistance R 10, ground connection behind the voltage stabilizing didoe U4 of inverting input 4 reversal connections series connection and the U8, the supply pin of comparator U1-4 meets power vd D1, grounding leg ground connection, connect power vd D1 behind its output 2 one tunnel series resistance R13, after one tunnel connection resistance R 12, one the tunnel connects relatively trigger voltage end 8 pin of integrated circuit U2-1, lead up to capacitor C 1 ground connection, relatively reset terminal 10 pin of integrated circuit U2-1 connect power vd D1, trigger voltage end 8 pin are connected with threshold voltage end 12 pin, control voltage end 11 pin are by capacitor C 2 ground connection, 13 pin ground connection, output 9 pin Q are connected the base stage of triode Q1, the grounded emitter of triode Q1 after by resistance R 14.
The battery discharging protective circuit.Battery feed VCC connects Schmidt trigger U2-2 threshold voltage end 2 pin by resistance R 16 one tunnel, lead up to potentiometer R18 ground connection, battery feed VCC connects Schmidt trigger U2-2 trigger voltage end 6 pin by resistance R 17 one tunnel, lead up to potentiometer R19 ground connection, reset terminal 4 pin power ends 14 pin of Schmidt trigger U2-2 connect power vd D1, output 5 pin Q connect inverting input 8 pin of comparator U1-3 by R21,1 pin and 7 pin ground connection, control voltage end 3 pin CO connect the inverting input 4 of comparator U1-4, and power vd D1 connects inverting input 8 pin of comparator U1-3 by resistance R 20.
Load switching circuit.The in-phase input end 11 of comparator U1-1 is leaded up to resistance R 1 and is connected power vd D1, another road is along connecing ground connection behind the diode D1, its inverting input 10 connects the positive pole of main power source by resistance R 7, its output 13 is leaded up to resistance R 2 and is connected power vd D1, another road connects the in-phase input end 7 of comparator U1-2 by resistance R 6 backs, the in-phase input end 7 of comparator U1-2 is also by capacitor C 3 ground connection, the inverting input 6 of comparator U1-2 connects the inverting input 4 of comparator U1-4, its output 1 is leaded up to resistance R 3 and is connected power vd D1, another road connects the in-phase input end 9 of comparator U1-3 by resistance R 4, the in-phase input end of comparator U1-3 is also by resistance R 5 ground connection, its output 14 one tunnel connects the G utmost point of field effect transistor COM2, another road meets battery feed VCC by resistance R 8, the S utmost point ground connection of field effect transistor COM2, the D utmost point connects the negative pole of LED.
Constant voltage circuit.Power supply VCC is along connecing the input 3 that is connected integrated voltage-stabiliser tube U7 behind the diode D4,2 ends of integrated voltage-stabiliser tube U7 connect the negative pole of LED, output 1 output voltage V DD2, power supply VCC is by after the resistance R 22, one the tunnel connects the collector electrode of triode Q3, another road connects the G utmost point of field effect transistor COM3, the emitter of triode Q3 connects the LED negative pole, base stage connects the output 1 of sampling amplifier U3 by resistance R 35, the S utmost point of field effect transistor COM3 meets battery feed VCC, the positive pole of its D utmost point LED, power vd D2 connects the in-phase input end 3 of sampling amplifier U3 by resistance R 24 one tunnel, another road connects the negative pole of LED by voltage stabilizing didoe U9,4 pin of sampling amplifier U3 connect the negative pole of LED, 8 pin meet power vd D2, inverting input 2 connects its output 1 by resistance R 23, LED is anodal by after the resistance R 25, one the tunnel connects the inverting input 2 of sampling amplifier U3, another road is by the negative pole of resistance R 26 back LED, the inverting input 2 of sampling amplifier U3 is also by being connected the collector electrode of triode Q2, the negative pole of the emitter connection LED of triode Q2 behind resistance R 34 and the potentiometer R27.
Timing circuit.After 12 pin of timing integration block U5,13 pin and the interconnection of 14 pin, be connected on the power vd D1,1 pin connects resistance R 28 backs, 2 pin are interconnected after connecting capacitor C 4 backs, 3 pin connection resistance R 29,5 pin connect ground connection behind 10 pin, 6 pin are by resistance R 30 ground connection, 9 pin power vd D1, behind the power vd D1 series resistance R31, one the tunnel connects 6 pin, one the tunnel connects the D utmost point of field effect transistor COM4,8 pin pass through the base stage that resistance R 33 backs connect triode Q2, the S utmost point ground connection of field effect transistor COM4, and the G utmost point connects the output 1 of comparator U1-2 by resistance R 32.
Wherein, relatively integrated circuit U2-1 and Schmidt trigger U2-2 are C7556, and integrated voltage-stabiliser tube U6 and U7 are 78L12, and integrated circuit U5 is CD4541.
Claims (1)
1. a LED lamp constant-voltage controller is characterized in that: be made up of storage battery charge control circuit, battery discharging protective circuit, load switching circuit, timing circuit and constant voltage circuit; Wherein: storage battery charge control circuit comprises that comparison integrated circuit U2-1 reaches the overcharge protection circuit of resistance R 12, R13 and R14, capacitor C 1, C2 on every side, the integrated computing comparison circuit that comprises comparator U1-4, resistance R 9, R10 and R11, voltage stabilizing didoe U4 and U8 also comprises charging circuit and triode Q1, integrated voltage-stabiliser tube U6, resistance R 15 and the diode D3 of diode D2, D4 and field effect transistor COM1; The positive pole of main power source is by two diode D2 in parallel and D4, one the tunnel connects the S utmost point of field effect transistor COM1, another road is by after the resistance R 15, one the tunnel connects the G utmost point of field effect transistor COM1, another road connects the collector electrode of triode Q1, the positive pole of storage battery connects the D utmost point of field effect transistor COM1 by fuse FU one tunnel, the diode D3 of leading up to connects the input 3 of integrated voltage-stabiliser tube U6, the 2 end ground connection of the negative pole of storage battery and integrated voltage-stabiliser tube U6, its output 1 output burning voltage VDD1, battery feed VCC is connected the in-phase input end 5 of comparator U1-4 by resistance R 9 one tunnel, another road is by resistance R 11 ground connection, power vd D1 connects the inverting input 4 of comparator U1-4 by resistance R 10, ground connection behind the voltage stabilizing didoe U4 of inverting input 4 reversal connections series connection and the U8, the supply pin of comparator U1-4 meets power vd D1, grounding leg ground connection, connect power vd D1 behind its output 2 one tunnel series resistance R13, after one tunnel connection resistance R 12, one the tunnel connects relatively trigger voltage end 8 pin of integrated circuit U2-1, lead up to capacitor C 1 ground connection, relatively reset terminal 10 pin of integrated circuit U2-1 connect power vd D1, trigger voltage end 8 pin are connected with threshold voltage end 12 pin, control voltage end 11 pin are by capacitor C 2 ground connection, 13 pin ground connection, output 9 pin Q are connected the base stage of triode Q1, the grounded emitter of triode Q1 after by resistance R 14; The battery discharging protective circuit comprises Schmidt trigger U2-2, resistance R 16, R17, R20 and R21, potentiometer R18 and R19, battery feed VCC connects Schmidt trigger U2-2 threshold voltage end 2 pin by resistance R 16 one tunnel, lead up to potentiometer R18 ground connection, battery feed VCC connects Schmidt trigger U2-2 trigger voltage end 6 pin by resistance R 17 one tunnel, lead up to potentiometer R19 ground connection, reset terminal 4 pin power ends 14 pin of Schmidt trigger U2-2 connect power vd D1, output 5 pin Q connect inverting input 8 pin of comparator U1-3 by R21,1 pin and 7 pin ground connection, control voltage end 3 pin CO connect the inverting input 4 of comparator U1-4, and power vd D1 connects inverting input 8 pin of comparator U1-3 by resistance R 20; Load switching circuit comprises comparator U1-1, U1-2 and U1-3, resistance R 1, R2, R3, R4, R5, R6, R7 and R8, diode D1, capacitor C 3 and field effect transistor COM2, the in-phase input end 11 of comparator U1-1 is leaded up to resistance R 1 and is connected power vd D1, another road is along connecing ground connection behind the diode D1, its inverting input 10 connects the positive pole of main power source by resistance R 7, its output 13 is leaded up to resistance R 2 and is connected power vd D1, another road connects the in-phase input end 7 of comparator U1-2 by resistance R 6 backs, the in-phase input end 7 of comparator U1-2 is also by capacitor C 3 ground connection, the inverting input 6 of comparator U1-2 connects the inverting input 4 of comparator U1-4, its output 1 is leaded up to resistance R 3 and is connected power vd D1, another road connects the in-phase input end 9 of comparator U1-3 by resistance R 4, the in-phase input end of comparator U1-3 is also by resistance R 5 ground connection, its output 14 one tunnel connects the G utmost point of field effect transistor COM2, another road meets battery feed VCC by resistance R 8, the S utmost point ground connection of field effect transistor COM2, the D utmost point connects the negative pole of LED; Constant voltage circuit comprises integrated voltage-stabiliser tube U7, sampling amplifier U3, field effect transistor COM3, diode D4, voltage stabilizing didoe U9, resistance R 22, R23, R24, R25, R26, R34 and R35, triode Q2 and Q3 and potentiometer R27, power supply VCC is along connecing the input 3 that is connected integrated voltage-stabiliser tube U7 behind the diode D4,2 ends of integrated voltage-stabiliser tube U7 connect the negative pole of LED, output 1 output voltage V DD2, power supply VCC is by after the resistance R 22, one the tunnel connects the collector electrode of triode Q3, another road connects the G utmost point of field effect transistor COM3, the emitter of triode Q3 connects the LED negative pole, base stage connects the output 1 of sampling amplifier U3 by resistance R 35, the S utmost point of field effect transistor COM3 meets battery feed VCC, the positive pole of its D utmost point LED, power vd D2 connects the in-phase input end 3 of sampling amplifier U3 by resistance R 24 one tunnel, another road connects the negative pole of LED by voltage stabilizing didoe U9,4 pin of sampling amplifier U3 connect the negative pole of LED, 8 pin meet power vd D2, inverting input 2 connects its output 1 by resistance R 23, LED is anodal by after the resistance R 25, one the tunnel connects the inverting input 2 of sampling amplifier U3, another road is by the negative pole of resistance R 26 back LED, the inverting input 2 of sampling amplifier U3 is also by being connected the collector electrode of triode Q2, the negative pole of the emitter connection LED of triode Q2 behind resistance R 34 and the potentiometer R27; Timing circuit comprises timing integration block U5, field effect transistor COM4, resistance R 28, R29, R30, R31, R32 and R33, capacitor C 4,12 pin of timing integration block U5, after 13 pin and the interconnection of 14 pin, be connected on the power vd D1, after 1 pin connects resistance R 28, after 2 pin connect capacitor C 4,3 pin are interconnected after connecting resistance R 29,5 pin connect ground connection behind 10 pin, 6 pin are by resistance R 30 ground connection, 9 pin power vd D1, behind the power vd D1 series resistance R31, one the tunnel connects 6 pin, one the tunnel connects the D utmost point of field effect transistor COM4,8 pin connect the base stage of triode Q2 by resistance R 33 backs, the S utmost point ground connection of field effect transistor COM4, the G utmost point connect the output 1 of comparator U1-2 by resistance R 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200588175U CN203120246U (en) | 2013-02-02 | 2013-02-02 | Constant voltage controller for LED lamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013200588175U CN203120246U (en) | 2013-02-02 | 2013-02-02 | Constant voltage controller for LED lamp |
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| CN203120246U true CN203120246U (en) | 2013-08-07 |
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| CN2013200588175U Expired - Fee Related CN203120246U (en) | 2013-02-02 | 2013-02-02 | Constant voltage controller for LED lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107771414A (en) * | 2015-06-19 | 2018-03-06 | 飞利浦照明控股有限公司 | LED matrix and LED type of drive |
| CN111030229A (en) * | 2019-12-23 | 2020-04-17 | 中国电子科技集团公司第十八研究所 | Charge-discharge control circuit |
-
2013
- 2013-02-02 CN CN2013200588175U patent/CN203120246U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107771414A (en) * | 2015-06-19 | 2018-03-06 | 飞利浦照明控股有限公司 | LED matrix and LED type of drive |
| CN107771414B (en) * | 2015-06-19 | 2020-05-19 | 飞利浦照明控股有限公司 | LED device and LED driving method |
| CN111030229A (en) * | 2019-12-23 | 2020-04-17 | 中国电子科技集团公司第十八研究所 | Charge-discharge control circuit |
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Granted publication date: 20130807 Termination date: 20150202 |
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