CN201518547U - Semi-conductor lighting constant-current power supply - Google Patents
Semi-conductor lighting constant-current power supply Download PDFInfo
- Publication number
- CN201518547U CN201518547U CN2009200494538U CN200920049453U CN201518547U CN 201518547 U CN201518547 U CN 201518547U CN 2009200494538 U CN2009200494538 U CN 2009200494538U CN 200920049453 U CN200920049453 U CN 200920049453U CN 201518547 U CN201518547 U CN 201518547U
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- power supply
- resistance
- constant
- current power
- voltage stabilizing
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Abstract
The utility model relates to a semi-conductor lighting constant-current power supply which can solve the problem of constant current power supply of an LED lighting lamp. The semi-conductor lighting constant-current power supply comprises a direct current power supply end, a current-limiting protecting resistance and a voltage stabilizing diode series branch circuit of a voltage stabilizing diode and which is connected on the positive end and the negative end of the direct current power supply, a series branch circuit which is connected on two ends of the voltage stabilizing diode in parallel and comprises a power voltage stabilizing diode base electrode-transmitting electrode and a constant current value limiting resistance, and n resistances which are connected between the positive end of the direct current power supply and the collecting electrode of the power triode in series, wherein two ends of each resistance in the n resistances are respectively the power supply wiring end of a semi-conductor lighting element (LED), and the value of n is assured according to the direct current output voltage and the positive pressure drop voltage value of the series LED light-emitting diode.
Description
Technical field
The utility model relates to a kind of semiconductor lighting constant-current supply of a kind of LED of being exclusively used in.
Background technology
The power supply of traditional LED illuminating lamp, the function that does not have the constant current power supply, its shortcoming is, in several LED lamps that are connected in series in the load, a damage is arranged, parallel resistor constitutes current supply circuit separately with it, cause the electric current of load circuit to change (increase), quicken to reduce the useful life of residue LED lamp.
The utility model content
The purpose of this utility model provides a kind of a kind of semiconductor lighting constant-current supply that can solve the constant current powerup issue of LED illuminating lamp.
A kind of semiconductor lighting constant-current supply, its structure comprises: dc power supply terminal; Be connected to the current-limiting protection resistance and the voltage stabilizing didoe series arm of a voltage stabilizing didoe of the positive and negative end of DC power supply; Be parallel to the voltage stabilizing didoe two ends, limit n the resistance that is connected in series between the collector electrode of series arm that resistance forms and DC power supply anode and described pliotron by pliotron base stage one emitter and constant current value; Each resistance two ends is respectively the supply terminals of semiconductor lighting element (LED) in the described n resistance, and the numerical value of n is determined with the forward voltage drop magnitude of voltage of the LED light-emitting diode that is connected in series according to VD.
Aforesaid a kind of semiconductor lighting constant-current supply, described dc power supply terminal connects 110V or 220V AC power by a diode full-wave rectifying circuit, between the output of diode full-wave rectifying circuit and be connected with a filtering storage capacitor.
Aforesaid a kind of semiconductor lighting constant-current supply is serially connected with constant current value and adjusts potentiometer between pliotron emitter and constant current value qualification resistance.
Aforesaid a kind of semiconductor lighting constant-current supply, described pliotron should be the triode that withstand voltage satisfies circuit requirement.
The invention has the beneficial effects as follows: the utility model is compared with traditional LED mains lighting supply, have to disregard the institute's LED load number that connects and constant current power supply, and circuit structure is simple advantage and good effects such as the low and practicality of cost.Description of drawings Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Physical circuit schematic diagram of the present utility model can provide a constant-current supply embodiment with rectification circuit referring to Fig. 1: Fig. 1.The AC power of rectification circuit D1-D4 input 110v or 220V in the present embodiment, output (dc power supply terminal) also is connected with a high withstand voltage filtering energy storage capacitor C 1, this capacitor C 1, withstand voltage should be able to satisfy the specification requirement of circuit, and the C1 withstand voltage of this circuit is 400V.On dc power supply terminal, go back and be connected with voltage stabilizing didoe DW and current-limiting protection resistance R thereof.The series arm of forming.At voltage stabilizing didoe DW two ends and be connected with by base stage one emitter of pliotron T, constant current value and adjust the series arm that potentiometer RW and constant current value current-limiting resistance R1 form.Be serially connected with n resistance R 2-Rn between the collector electrode of described DC power supply anode and pliotron, each resistance two ends is parallel with the LED LED load.Described pliotron is high pressure resistant triode, and its withstand voltage is more than 400V.A described n resistance is to there being n LED LED load, and its quantity is determined with the forward voltage drop magnitude of voltage of the LED light-emitting diode that is connected in series according to VD.
Claims (2)
1. semiconductor lighting constant-current supply, it is characterized in that: its structure comprises dc power supply terminal; Be connected to the current-limiting protection resistance and the voltage stabilizing didoe series arm of a voltage stabilizing didoe of the positive and negative end of DC power supply; Be parallel to the voltage stabilizing didoe two ends, limit n the resistance that is connected in series between the collector electrode of series arm that resistance forms and DC power supply anode and described pliotron by pliotron base-emitter and constant current value; Each resistance two ends is respectively the supply terminals of semiconductor lighting element LED in the described n resistance, and the numerical value of n is determined with the forward voltage drop magnitude of voltage of the LED light-emitting diode that is connected in series according to VD.
2. a kind of semiconductor lighting constant-current supply as claimed in claim 1, it is characterized in that: described dc power supply terminal, connect 110V or 220V AC power by a diode full-wave rectifying circuit, between the output of diode full-wave rectifying circuit and be connected with a filtering storage capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200494538U CN201518547U (en) | 2009-10-29 | 2009-10-29 | Semi-conductor lighting constant-current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200494538U CN201518547U (en) | 2009-10-29 | 2009-10-29 | Semi-conductor lighting constant-current power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201518547U true CN201518547U (en) | 2010-06-30 |
Family
ID=42499270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200494538U Expired - Fee Related CN201518547U (en) | 2009-10-29 | 2009-10-29 | Semi-conductor lighting constant-current power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201518547U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998715A (en) * | 2010-12-06 | 2011-03-30 | 东莞泉声电子有限公司 | Light-emitting diode (LED) power circuit |
| CN102404903A (en) * | 2010-09-13 | 2012-04-04 | 台达电子工业股份有限公司 | Lamp driving device |
| CN104936342A (en) * | 2015-06-03 | 2015-09-23 | 周玉龙 | LED lamp protection circuit |
-
2009
- 2009-10-29 CN CN2009200494538U patent/CN201518547U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404903A (en) * | 2010-09-13 | 2012-04-04 | 台达电子工业股份有限公司 | Lamp driving device |
| CN101998715A (en) * | 2010-12-06 | 2011-03-30 | 东莞泉声电子有限公司 | Light-emitting diode (LED) power circuit |
| CN101998715B (en) * | 2010-12-06 | 2013-01-09 | 东莞泉声电子有限公司 | Light-emitting diode (LED) power circuit |
| CN104936342A (en) * | 2015-06-03 | 2015-09-23 | 周玉龙 | LED lamp protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20101029 |