CN103547044A - Voltage stabilizing circuit of LED energy-saving lamp constant-current boost power supply - Google Patents
Voltage stabilizing circuit of LED energy-saving lamp constant-current boost power supply Download PDFInfo
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- CN103547044A CN103547044A CN201310556128.1A CN201310556128A CN103547044A CN 103547044 A CN103547044 A CN 103547044A CN 201310556128 A CN201310556128 A CN 201310556128A CN 103547044 A CN103547044 A CN 103547044A
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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 invention discloses a voltage stabilizing circuit of an LED energy-saving lamp constant-current boost power supply. The voltage stabilizing circuit is composed of a 12V direct-current voltage input end Vin, a triode Q1, a base electrode biasing resistor R1, a collector resistor R2, a stabilivolt DZ1, a capacitor C1 and a voltage output end Vout. When the voltage input end Vin is higher than normal working voltage, the voltage outputted from the voltage output end Vout is stable after being stabilized through the R1 and the DZ1, and therefore an IC in the constant-current boost power circuit can work normally. According to the technical scheme, the circuit is simple in design, and output voltage is constant; the voltage stabilizing circuit of the LED energy-saving lamp constant-current boost power supply is safe, reliable, and capable of ensuring normal work of the circuit, lowering the circuit failure rate and prolonging the service life of an LED energy-saving lamp.
Description
Technical field
The invention belongs to LED control circuit, be specifically related to a kind of voltage stabilizing circuit of LED electricity-saving lamp constant current booster power.
Background technology
LED is a kind of very competitive new type light source, compare with traditional incandescent lamp and fluorescent lamp, LED light fixture has the advantages such as low in energy consumption, brightness is high, volume is little, the life-span is long, just progressively replace existing incandescent lamp and fluorescent lamp, start to be widely used in full-colour display screen, traffic lights, automobile lamp, background light source, Special Work illumination etc., become lighting field new generation of green light source.But, because the forward voltage-current characteristic of LED is very steep, dynamic electric resistor is little, make to use mains voltage source directly to power, otherwise when voltage increases, the electric current that flows through LED can sharply increase, cause LED lamp to burn out, therefore, must design constant-current supply, and in constant-current power supply circuit in the market the working range of IC mostly a narrower scope, when input voltage change is larger, easily make its work undesired, when input voltage is higher, easy burn-out, when input voltage is lower, easily self-locking and not working again, can not fully meet the driving requirement that LED works required, failure rate is high, also affect the useful life of LED electricity-saving lamp.
Summary of the invention
The object of the present invention is to provide a kind of voltage stabilizing circuit of LED electricity-saving lamp constant current booster power, this device circuit simplicity of design, output voltage is constant, safe and reliable, has guaranteed circuit normal operation, has reduced fault rate, has extended LED electricity-saving lamp useful life.
For achieving the above object, the voltage stabilizing circuit of a kind of LED electricity-saving lamp of the present invention constant current booster power, comprise 12V DC voltage input end Vin and voltage output end Vout, it is characterized in that: this voltage stabilizing circuit is comprised of triode Q1, base biasing resistor R1, collector resistance R2, voltage-stabiliser tube DZ1 and capacitor C 1; The base stage of triode Q1 is connected with 12V DC voltage input end Vin after resistance R 1, the negative pole end of voltage-stabiliser tube DZ1 is connected on the base stage of triode Q1, another positive terminal ground connection, after the collector series connection resistance R 2 of triode Q1, be connected with direct voltage 12V input Vin, ground connection after the emitter of triode Q1 is connected in series with capacitor C 1, the emitter of triode Q1 is connected with voltage output end Vout.
In technique scheme, owing to having increased voltage stabilizing circuit in LED electricity-saving lamp constant current booster power, when voltage input end Vin is during higher than 18V, after R1, DZ1 voltage stabilizing, voltage stabilization to voltage output end Vout output has 11.3V, has guaranteed that the IC in constant current booster power supply circuit can work.There is following advantage: the first, circuit design is simple, and cost is low.The second, voltage regulation result is good, safe and reliable, has guaranteed circuit normal operation.The 3rd, reduced failure rate, extended the useful life of LED electricity-saving lamp.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the voltage stabilizing circuit of a kind of LED electricity-saving lamp of the present invention constant current booster power.
Embodiment
Below in conjunction with accompanying drawing, the voltage stabilizing circuit of a kind of LED electricity-saving lamp constant current booster power of the present invention is described in further detail.
As seen from Figure 1, the voltage stabilizing circuit of a kind of LED electricity-saving lamp constant current booster power of the present embodiment be mounted in constant current booster power pwm control circuit before, object is the IC of protection in pwm control circuit, can work.The voltage stabilizing circuit of a kind of LED electricity-saving lamp constant current booster power of the present embodiment is comprised of 12V DC voltage input end Vin, triode Q1, base biasing resistor R1, collector resistance R2, voltage-stabiliser tube DZ1 and capacitor C 1 and voltage output end Vout.The base stage of triode Q1 is connected with 12V DC voltage input end Vin after resistance R 1, the negative pole end of voltage-stabiliser tube DZ1 is connected on the base stage of triode Q1, another positive terminal ground connection, after the collector series connection resistance R 2 of triode Q1, be connected with direct voltage 12V input Vin, ground connection after the emitter of triode Q1 is connected in series with capacitor C 1, the emitter of triode Q1 is connected with voltage output end Vout.
In the above-described embodiments, when voltage input end Vin is during higher than 18V, after R1, DZ1 voltage stabilizing, to the voltage stabilization of voltage output end Vout output, there is 11.3V, guaranteed that the IC in constant current booster power supply circuit can work.The present embodiment circuit design is simple, and output voltage is constant, safe and reliable, has guaranteed circuit normal operation, has reduced fault rate, has extended LED electricity-saving lamp useful life.
Claims (1)
1. the voltage stabilizing circuit of a LED electricity-saving lamp constant current booster power, comprise 12V DC voltage input end Vin and voltage output end Vout, it is characterized in that: this voltage stabilizing circuit is comprised of triode Q1, base biasing resistor R1, collector resistance R2, voltage-stabiliser tube DZ1 and capacitor C 1; The base stage of triode Q1 is connected with 12V DC voltage input end Vin after resistance R 1, the negative pole end of voltage-stabiliser tube DZ1 is connected on the base stage of triode Q1, another positive terminal ground connection, after the collector series connection resistance R 2 of triode Q1, be connected with direct voltage 12V input Vin, ground connection after the emitter of triode Q1 is connected in series with capacitor C 1, the emitter of triode Q1 is connected with voltage output end Vout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310556128.1A CN103547044A (en) | 2013-11-12 | 2013-11-12 | Voltage stabilizing circuit of LED energy-saving lamp constant-current boost power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310556128.1A CN103547044A (en) | 2013-11-12 | 2013-11-12 | Voltage stabilizing circuit of LED energy-saving lamp constant-current boost power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103547044A true CN103547044A (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310556128.1A Pending CN103547044A (en) | 2013-11-12 | 2013-11-12 | Voltage stabilizing circuit of LED energy-saving lamp constant-current boost power supply |
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| CN (1) | CN103547044A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511538A (en) * | 2015-12-02 | 2016-04-20 | 上海小糸车灯有限公司 | Drive circuit of cooling fan for LED automobile lamp |
| CN106025784A (en) * | 2016-06-27 | 2016-10-12 | 湖北久之洋红外系统股份有限公司 | Boost electrical-light Q-switched circuit |
| CN108183607A (en) * | 2018-02-11 | 2018-06-19 | 浙江亿邦信息技术有限公司 | A kind of power control circuit and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011029383A1 (en) * | 2009-09-14 | 2011-03-17 | 深圳市航嘉驰源电气股份有限公司 | Led lamp driving circuit |
| CN202634777U (en) * | 2012-04-27 | 2012-12-26 | 深圳麦格米特电气股份有限公司 | LED backlight source drive circuit |
-
2013
- 2013-11-12 CN CN201310556128.1A patent/CN103547044A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011029383A1 (en) * | 2009-09-14 | 2011-03-17 | 深圳市航嘉驰源电气股份有限公司 | Led lamp driving circuit |
| CN202634777U (en) * | 2012-04-27 | 2012-12-26 | 深圳麦格米特电气股份有限公司 | LED backlight source drive circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511538A (en) * | 2015-12-02 | 2016-04-20 | 上海小糸车灯有限公司 | Drive circuit of cooling fan for LED automobile lamp |
| CN106025784A (en) * | 2016-06-27 | 2016-10-12 | 湖北久之洋红外系统股份有限公司 | Boost electrical-light Q-switched circuit |
| CN106025784B (en) * | 2016-06-27 | 2021-11-16 | 湖北久之洋红外系统股份有限公司 | Boost electro-optical Q-switching circuit |
| CN108183607A (en) * | 2018-02-11 | 2018-06-19 | 浙江亿邦信息技术有限公司 | A kind of power control circuit and application |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140129 |