CN202488831U - Novel capacitor step-down high-power LED (Light-Emitting Diode) driving circuit - Google Patents
Novel capacitor step-down high-power LED (Light-Emitting Diode) driving circuit Download PDFInfo
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- CN202488831U CN202488831U CN2012200675145U CN201220067514U CN202488831U CN 202488831 U CN202488831 U CN 202488831U CN 2012200675145 U CN2012200675145 U CN 2012200675145U CN 201220067514 U CN201220067514 U CN 201220067514U CN 202488831 U CN202488831 U CN 202488831U
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- circuit
- power led
- capacitor step
- power
- direct current
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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
Abstract
The utility model relates to a novel capacitor step-down high-power LED (Light-Emitting Diode) driving circuit which comprises mains supply inputs, a capacitor step-down rectifier circuit, a capacitor step-down half-wave rectification voltage stabilizing circuit, a DC (Direct Current) relay, a NE555 timer and a high-power LED lamp circuit. The novel capacitor step-down high-power LED driving circuit is characterized in that one path of the mains supply input provides a power supply for the DC relay and the NE555 timer after being processed by the capacitor step-down half-wave rectification voltage stabilizing circuit; the other path of the mains supply input provides a power supply for the high-power LED lamp circuit after being subjected to capacitor step-down rectification; after being connected in parallel with a normally-closed contact of the DC relay, two input ends of the high-power LED lamp circuit are connected with the capacitor step-down rectifier circuit; and the normally-closed contact of the DC relay is opened in a delayed mode by the NE555 timer. The circuit disclosed by the utility model has the advantates of simple and novel structure, and wide application prospect on the aspects of high-power LED street lamps and large-screen LED display screens.
Description
Technical field
The utility model relates to a kind of novel capacitor step-down high-power LED drive circuit, is applicable to high-power LED street lamp and big screen LED display screen.
Background technology
The existing capacitance decompression high-power driving led circuit that adopts, it is low to exist high-power anti-big current work ability, and electric capacity is violent discharges and recharges the damage that causes great power LED easily.
Summary of the invention
In view of above-mentioned technical deficiency; The utility model provides a kind of novel capacitor step-down high-power LED drive circuit; The operating current that has reached moment through Time Delay Opening LED lamp can not be applied on the high-powered LED lamp, has avoided acutely discharging and recharging the damage that great power LED is caused because of electric capacity.
The utility model adopts following scheme to realize: a kind of novel capacitor step-down high-power LED drive circuit; A kind of novel capacitor step-down high-power LED drive circuit comprises the civil power input, capacitor step-down rectifier circuit; The capacitance decompression half-wave rectifier voltage circuit; Direct current relay, NE555, great power LED circuit for lamp; It is characterized in that: described civil power is imported one the tunnel and behind the capacitance decompression half-wave rectifier voltage circuit, for direct current relay and NE555 power supply is provided; For the great power LED circuit for lamp provides power supply, two inputs of said great power LED circuit for lamp are in parallel with the normally closed interlock of direct current relay and then link to each other the normally-closed contact of described NE555 timer Time Delay Opening direct current relay with capacitor step-down rectifier circuit after the capacitance decompression rectification on another road.
The utility model circuit structure is simple; Novel; Come to improve greatly the working life of LED lamp through Time Delay Opening LED lamp, this circuit also can play the effect of capacitive compensation in system, have bigger application prospect at high-power LED street lamp and big screen LED display screen.
Description of drawings
Fig. 1 is the utility model embodiment theory diagram.
Fig. 2 is the physical circuit figure of the utility model embodiment.
Embodiment
As shown in Figure 1, the utility model provides a kind of novel capacitor step-down high-power LED drive circuit, a kind of novel capacitor step-down high-power LED drive circuit; Comprise the civil power input; Capacitor step-down rectifier circuit, capacitance decompression half-wave rectifier voltage circuit, direct current relay; NE555; The great power LED circuit for lamp is characterized in that: described civil power import one the tunnel behind the capacitance decompression half-wave rectifier voltage circuit for direct current relay and NE555 provide power supply, another road provides power supply for the great power LED circuit for lamp after the capacitance decompression rectification; Two inputs of said great power LED circuit for lamp are in parallel with the normally closed interlock of direct current relay and then link to each other the normally-closed contact of described NE555 timer Time Delay Opening direct current relay with capacitor step-down rectifier circuit.
Fig. 2 is the specific embodiment circuit diagram, and civil power is imported one the tunnel and after the voltage stabilizing of capacitance decompression halfwave rectifier voltage-stabiliser tube, provided+direct-current working volts of 12v for NE555 and direct current relay.Through utilizing NE555 to constitute the normally-closed contact of timer Time Delay Opening direct current relay.When civil power powered on ,+12v DC power supply charged to C5 through R1, and the charging interval is made as T.Power taking resistance R1 value is 10K Ω, and capacitor C 5 values are 200u.
Can get: T=2.2S.
When time T does not also have not then, the 3rd pin of NE555 (U1) is output as high level, direct current relay coil no power, and the normally open contact of direct current relay K breaks off, and normally closed interlock is closed.That branch road of normally closed interlock of being connected in parallel on LED lamp two ends like this is with regard to short circuit; Because when civil power has just powered on; The voltage of capacitor C 1 can not be suddenlyd change, and it exchanges capacitive reactance and does not also set up, and the large impact electric current of its moment just all was added on the normally closed interlock of direct current relay when civil power had just powered on like this; Because the contact of direct current relay can anti-heavy current impact, the heavy current impact of moment can not cause damage to direct current relay.
When the time, T arrived, the 3rd pin of NE555 (U1) was output as low level, and the direct current relay coil gets electric, and the normally open contact of direct current relay K is closed, and normally closed interlock breaks off.That branch road of normally closed interlock that is connected in parallel on LED lamp two ends has so just been opened a way; This time; Capacitor C 1 its AC impedance has been set up, again LED get two ends also the parallel connection an enough big electrochemical capacitor (value of C2 is 1000u, and capacitor C 2 becomes certain proportionate relationship with C1); So just guaranteed that LED can normally be lighted, and can not burnt.Like this; When each civil power powers on; Civil power one tunnel all will pass through certain delay through the capacitance decompression rectification just can give the power supply of LED lamp after the time; Temporary impact electric current when having guaranteed just to power on can not burn LED, in the entire circuit system, also can play the effect of capacitive compensation, and the effect of its anti-external electrical network fluctuation is also fine.
The above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model.
Claims (1)
1. a novel capacitor step-down high-power LED drive circuit comprises the civil power input, capacitor step-down rectifier circuit; The capacitance decompression half-wave rectifier voltage circuit; Direct current relay, NE555, great power LED circuit for lamp; It is characterized in that: described civil power is imported one the tunnel and behind the capacitance decompression half-wave rectifier voltage circuit, for direct current relay and NE555 power supply is provided; For the great power LED circuit for lamp provides power supply, two inputs of said great power LED circuit for lamp are in parallel with the normally closed interlock of direct current relay and then link to each other the normally-closed contact of described NE555 timer Time Delay Opening direct current relay with capacitor step-down rectifier circuit after the capacitance decompression rectification on another road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200675145U CN202488831U (en) | 2012-02-28 | 2012-02-28 | Novel capacitor step-down high-power LED (Light-Emitting Diode) driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200675145U CN202488831U (en) | 2012-02-28 | 2012-02-28 | Novel capacitor step-down high-power LED (Light-Emitting Diode) driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488831U true CN202488831U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200675145U Expired - Fee Related CN202488831U (en) | 2012-02-28 | 2012-02-28 | Novel capacitor step-down high-power LED (Light-Emitting Diode) driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202488831U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683942A (en) * | 2014-01-09 | 2014-03-26 | 惠州天能源科技有限公司 | Power converter |
| CN103715918A (en) * | 2014-01-09 | 2014-04-09 | 惠州天能源科技有限公司 | Digitally-controlled power converter |
-
2012
- 2012-02-28 CN CN2012200675145U patent/CN202488831U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683942A (en) * | 2014-01-09 | 2014-03-26 | 惠州天能源科技有限公司 | Power converter |
| CN103715918A (en) * | 2014-01-09 | 2014-04-09 | 惠州天能源科技有限公司 | Digitally-controlled power converter |
| CN103683942B (en) * | 2014-01-09 | 2017-06-13 | 天宝电子（惠州）有限公司 | A kind of supply convertor |
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Legal Events
| 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: 20121010 Termination date: 20150228 |
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| EXPY | Termination of patent right or utility model |