CN202873152U - Lightning stroke and surge resistant light emitting diode drive circuit - Google Patents
Lightning stroke and surge resistant light emitting diode drive circuit Download PDFInfo
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- CN202873152U CN202873152U CN2012205610452U CN201220561045U CN202873152U CN 202873152 U CN202873152 U CN 202873152U CN 2012205610452 U CN2012205610452 U CN 2012205610452U CN 201220561045 U CN201220561045 U CN 201220561045U CN 202873152 U CN202873152 U CN 202873152U
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- rectifier diode
- driving circuit
- led driving
- circuit
- lightning stroke
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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 discloses a lightning stroke and surge resistant light emitting diode drive circuit, comprising an X safety capacitor C1, a power resistor R1, a discharge resistor R2, and rectification diodes D1, D2, D3 and D4. The lightning stroke and surge resistant light emitting diode drive circuit is based on the improvement of the prior light emitting diode small-power drive circuit for reducing the voltage of the capacitors and discharging the capacitors, and replaces the traditional lightning stroke and surge resistant special components, such as a zinc oxide resistor, a TVS tube and a discharge tube, etc., with high power resistors for resisting and absorbing lightning stroke and surge and an X safety capacitor for improving the lightning stroke and surge resistance of the circuit; and simultaneously, the X safety capacitor can automatically disconnect to form an open circuit in the process of electric breakdown, thereby avoiding burning-out. The output end of the circuit replaces the prior voltage stabilizing diode for voltage stabilization with an externally-connected forward series connection light emitting diode with a forward voltage stabilization characteristic, thereby saving the working current of the voltage stabilization diode, obviously increasing the power supply efficiency and reducing the cost.
Description
Technical field
The utility model belongs to the electronic circuit technology field, is specifically related to a kind of LED driving circuit of anti-lightning surge.
Background technology
Light-emitting diode (LED) is the new generation of semiconductor luminescent device, and it has the characteristics such as light efficiency height, life-span length and environmental protection and energy saving, uses very extensive.Light-emitting diode (LED) drive circuit is the important component part of LED illumination, and the reliability of its circuit particularly characteristic of anti-lightning surge attracts widespread attention, but there is no at present a kind of desirable anti-lightning surge technology.Have the characteristics such as the strong and cost of overcurrent-overvoltage absorbability is low such as ZnO resistors anti-lightning surge device, still owing to its intrinsic cumulative damage effect is difficult to resist repeatedly lightning surge; TVS fast recovery diode anti-lightning surge device has the fast characteristics of response, but owing to the relatively poor lightning surge that is difficult to bear high-voltage great-current of its overcurrent-overvoltage ability; Discharge tube anti-lightning surge device has the strong and low characteristics of cost of overcurrent-overvoltage ability, but its response speed is slow, stability and poor reliability.
The utility model content
In order to solve the technical problem of LED driving circuit anti-lightning surge, overcome and be difficult to resist high pressure or repeatedly lightning surge, the slow defective of response speed in the prior art, the utility model provides a kind of LED driving circuit of novel anti-lightning surge.
Concrete technical scheme of the present utility model is as follows:
A kind of LED driving circuit of anti-lightning surge comprises capacitor C 1, resistance R 1 and discharge resistance R2, rectifier diode D1, D2, D3 and D4; One end of described resistance R 1 links to each other with the L line of electric main, and the other end of resistance R 1 links to each other with an end of capacitor C 1, and the other end of described capacitor C 1 is connected negative pole with the positive pole of rectifier diode D1 respectively and is connected with rectifier diode D4; Described discharge resistance R2 is in parallel with capacitor C 1, and the negative pole of the positive pole of described rectifier diode D2 and rectifier diode D3 all is connected to the N line of electric main; The negative pole of described rectifier diode D1 is connected negative pole and is connected with rectifier diode D2, as the positive output end of LED driving circuit; The positive pole of described rectifier diode D3 is connected positive pole and is connected with rectifier diode D4, as the negative output terminal of LED driving circuit; The forward stabilized voltage characteristic that described LED driving circuit is directly used external forward series connection LED carries out voltage stabilizing to output voltage.
Described capacitor C 1 is X safety electric capacity.
Described resistance R 1 is power resistor.
Can be external between the positive output end of described LED driving circuit and the negative output terminal low power LED LED of 1 ~ 50 forward series connection.
The beneficial effects of the utility model are:
(1) the anti-lightning surge capability of LED driving circuit of the present utility model is good especially;
(2) efficient of LED driving circuit of the present utility model is higher;
(3) LED driving circuit of the present utility model is simple in structure, cost is low.
Description of drawings
Fig. 1 is the circuit theory diagrams of the LED driving circuit of anti-lightning surge of the present utility model.
Fig. 2 is the circuit theory diagrams of the LED driving circuit of another kind of anti-lightning surge of the present utility model.
Embodiment:
Below in conjunction with accompanying drawing the utility model is described further.
Embodiment 1:
The LED driving circuit of a kind of anti-lightning surge as shown in Figure 1 comprises capacitor C 1, resistance R 1 and discharge resistance R2, rectifier diode D1, D2, D3 and D4; Wherein, capacitor C 1 is X safety electric capacity, and resistance R 1 is power resistor.One end of described resistance R 1 links to each other with the L line of electric main, and the other end of resistance R 1 links to each other with an end of capacitor C 1, and the other end of described capacitor C 1 is connected negative pole with the positive pole of rectifier diode D1 respectively and is connected with rectifier diode D4; Described discharge resistance R2 is in parallel with capacitor C 1, and the negative pole of the positive pole of described rectifier diode D2 and rectifier diode D3 all is connected to the N line of electric main; The negative pole of described rectifier diode D1 is connected negative pole and is connected with rectifier diode D2, as the positive output end of LED driving circuit; The positive pole of described rectifier diode D3 is connected positive pole and is connected with rectifier diode D4, as the negative output terminal of LED driving circuit.The LED of external 8 forwards series connection between the positive output end of LED driving circuit and the negative output terminal.Wherein, the positive output end of LED driving circuit links to each other with the positive pole of LED1, and the negative output terminal of LED driving circuit links to each other with the negative pole of LED8.The forward stabilized voltage characteristic that this LED driving circuit is directly used external forward series connection LED carries out voltage stabilizing to output voltage.
Circuit element parameter is as follows:
R1 is that power is that the 1W resistance is the metal film power resistor of 1K ohm, R2 is that power is that the 0.25W resistance is the low power metal film resistance of 510K ohm, C1 is the X safety electric capacity of X2 level 0.22 μ F, D1, D2, D3, D4 are that model is the rectifier diode of 1N4007, the 100mW low power LED LED of external 8 forwards series connection.
The technical parameter of circuit measuring is as follows:
For the input of 220V electric main, the output voltage effective value of circuit is 24V, and the drive current effective value of LED is 13mA.For the input of 265V electric main, the output voltage effective value of circuit is 24.2V, and the drive current effective value of LED is 15.6mA.
Lightning surge test condition for routine: voltage 2000V, pulsewidth 8 ~ 20 microseconds, civil power 220V/50HZ Phase synchronization are respectively 0 degree, 90 degree, 180 degree and 270 degree, and the attack time is spaced apart 60 seconds, impacts total degree 20 times.Test result: Fig. 1 circuit does not damage, and functional parameter is normal.
Anti-lightning surge parameter surplus for test and check circuit of the present invention, the following harsh measuring condition of special application: voltage 2500V, pulsewidth 8 ~ 20 microseconds, civil power 220V/50HZ Phase synchronization is respectively 0 degree, 90 degree, 180 degree and 270 degree, and total degree is impacted 200 times in attack time interval 30 seconds.Experimental result: Fig. 1 circuit does not damage, and still all are normal for functional parameter.
When the output short-circuit of LED driving circuit, output voltage is 0V, and circuit does not damage, and has the short circuit defencive function.When the output open circuit of LED driving circuit, output voltage equals the electric main input voltage, and circuit does not damage, and has the open circuit defencive function.
Operation principle of the present utility model is: the light-emitting diode low-power drive circuit to existing capacitance decompression power taking improves, do not use the anti-lightning surge dedicated devices such as traditional ZnO resistors, TVS pipe and discharge tube, and resist and absorb the high voltage transient electric pulse of lightning surge, improve the anti-lightning surge capability of circuit with the high voltage endurance of X safety electric capacity with high-power resistance, utilize simultaneously X safety electric capacity can the automatic open circuit characteristic when electrical breakdown and avoid the burning machine.The output of this circuit does not use voltage stabilizing didoe to carry out voltage stabilizing, but the forward stabilized voltage characteristic that utilizes external forward series connection Light-Emitting Diode replaces the voltage stabilizing didoe in the prior art, and saved self operating current of voltage stabilizing didoe, obviously improve power-efficient, and reduced cost.
Embodiment 2:
The LED driving circuit of another kind of anti-lightning surge as shown in Figure 2 comprises capacitor C 1, resistance R 1 and discharge resistance R2, rectifier diode D1, D2, D3 and D4; One end of described resistance R 1 links to each other with the L line of electric main, and the other end of resistance R 1 links to each other with an end of capacitor C 1, and wherein, capacitor C 1 is X safety electric capacity, and resistance R 1 is power resistor.One end of described capacitor C 1 links to each other with the L line of electric main, and the other end of capacitor C 1 links to each other with an end of resistance R 1, and the other end of described resistance R 1 is connected negative pole with the positive pole of rectifier diode D1 respectively and is connected with rectifier diode D4.Described discharge resistance R2 is in parallel with capacitor C 1, and the negative pole of the positive pole of described rectifier diode D2 and rectifier diode D3 all is connected to the N line of electric main.The negative pole of described rectifier diode D1 is connected negative pole and is connected with rectifier diode D2, as the positive output end of LED driving circuit.The positive pole of described rectifier diode D3 is connected positive pole and is connected with rectifier diode D4, as the negative output terminal of LED driving circuit.The LED of external 8 forwards series connection between the positive output end of LED driving circuit and the negative output terminal.Wherein, the positive output end of LED driving circuit links to each other with the positive pole of LED1, and the negative output terminal of LED driving circuit links to each other with the negative pole of LED8.
Compare with embodiment 1, the element of embodiment 2 is identical, just the location swap of resistance R 1, discharge resistance R2 and capacitor C 1.Embodiment 2 is identical with the technical parameter of the circuit measuring of embodiment 1, and functional parameter is fully normal.
Embodiment 3:
L line and the N line of electric main among Fig. 1 are exchanged, and the circuit engineering parameter is identical, and functional parameter is fully normal.
Embodiment 4:
L line and the N line of electric main among Fig. 2 are exchanged, and the circuit engineering parameter is identical, and functional parameter is fully normal.
Claims (4)
1. the LED driving circuit of an anti-lightning surge is characterized in that: comprise capacitor C 1, resistance R 1 and discharge resistance R2, rectifier diode D1, D2, D3 and D4; One end of described resistance R 1 links to each other with the L line of electric main, and the other end of resistance R 1 links to each other with an end of capacitor C 1, and the other end of described capacitor C 1 is connected negative pole with the positive pole of rectifier diode D1 respectively and is connected with rectifier diode D4; Described discharge resistance R2 is in parallel with capacitor C 1, and the negative pole of the positive pole of described rectifier diode D2 and rectifier diode D3 all is connected to the N line of electric main; The negative pole of described rectifier diode D1 is connected negative pole and is connected with rectifier diode D2, as the positive output end of LED driving circuit; The positive pole of described rectifier diode D3 is connected positive pole and is connected with rectifier diode D4, as the negative output terminal of LED driving circuit; The forward stabilized voltage characteristic that described LED driving circuit is directly used external forward series connection LED carries out voltage stabilizing to output voltage.
2. the LED driving circuit of a kind of anti-lightning surge according to claim 1 is characterized in that: described capacitor C 1 is X safety electric capacity.
3. the LED driving circuit of a kind of anti-lightning surge according to claim 1 is characterized in that: described resistance R 1 is power resistor.
4. the LED driving circuit of a kind of anti-lightning surge according to claim 1 is characterized in that: low power LED LED that can external 1 ~ 50 forward series connection between the positive output end of described LED driving circuit and the negative output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205610452U CN202873152U (en) | 2012-10-30 | 2012-10-30 | Lightning stroke and surge resistant light emitting diode drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205610452U CN202873152U (en) | 2012-10-30 | 2012-10-30 | Lightning stroke and surge resistant light emitting diode drive circuit |
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| Publication Number | Publication Date |
|---|---|
| CN202873152U true CN202873152U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205610452U Expired - Fee Related CN202873152U (en) | 2012-10-30 | 2012-10-30 | Lightning stroke and surge resistant light emitting diode drive circuit |
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| CN (1) | CN202873152U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454464A (en) * | 2013-07-09 | 2013-12-18 | 华立仪表集团股份有限公司 | Anti-6kV surge circuit and power supply circuit of electricity meter |
| CN104639334A (en) * | 2013-11-11 | 2015-05-20 | 研祥智能科技股份有限公司 | Electronic equipment and network interface circuit |
-
2012
- 2012-10-30 CN CN2012205610452U patent/CN202873152U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454464A (en) * | 2013-07-09 | 2013-12-18 | 华立仪表集团股份有限公司 | Anti-6kV surge circuit and power supply circuit of electricity meter |
| CN103454464B (en) * | 2013-07-09 | 2016-05-18 | 华立科技股份有限公司 | A kind of anti-6KV surge circuit and power supply circuits of ammeter |
| CN104639334A (en) * | 2013-11-11 | 2015-05-20 | 研祥智能科技股份有限公司 | Electronic equipment and network interface circuit |
| CN104639334B (en) * | 2013-11-11 | 2019-04-12 | 研祥智能科技股份有限公司 | A kind of electronic equipment and its network interface circuit |
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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: 20130410 Termination date: 20151030 |
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| EXPY | Termination of patent right or utility model |