CN2715458Y - Semiconductor illuminating constant current supply - Google Patents
Semiconductor illuminating constant current supply Download PDFInfo
- Publication number
- CN2715458Y CN2715458Y CN 200420067198 CN200420067198U CN2715458Y CN 2715458 Y CN2715458 Y CN 2715458Y CN 200420067198 CN200420067198 CN 200420067198 CN 200420067198 U CN200420067198 U CN 200420067198U CN 2715458 Y CN2715458 Y CN 2715458Y
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- CN
- China
- Prior art keywords
- supply
- resistance
- constant
- constant current
- pliotron
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a semiconductor illuminating constant current supply, comprising a direct current supply end, a series arm of a stabistor and a current limiting protection resistor of a stabistor connected to the positive and negative ends of the direct current supply, a series arm of the stabistor connected in parallel to both ends of the stabistor, which is composed of an emitter which is the base electrode of a pliotron, an adjusting potentiometer of constant current value and a limiting resistor of constant current value, and n resistors connected in series between the positive end of the direct current supply and the collector of the pliotron. Both ends of each resistor in n resistors are respectively the supply terminals of the semiconductor illuminating component supply(LED). The numerical value of n is selected according to the output voltage of the direct current supply, number of the semiconductor illuminating component supply and the forward voltage drop of the semiconductor illuminating component supply. The supply is powered by the constant current, having the advantages of simple circuit structure, small volume, low cost, practicality, etc.
Description
Technical field
The utility model relates to a kind of LED of being exclusively used in semiconductor lighting power supply.
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.
Summary of the invention
A kind of semiconductor lighting constant-current supply described in the utility model can solve the constant current powerup issue to the LED illuminating lamp.
A kind of semiconductor lighting constant-current supply described in the utility model, 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.
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 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.Rectification circuit D in the present embodiment
1-D
4The AC power of input termination 110V or 220V, output (dc power supply terminal) also is connected with a high withstand voltage filtering energy storage capacitor C
1, this capacitor C
1Withstand voltage should be able to satisfy the specification requirement of circuit, and the Cl 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
0The series arm of forming.At voltage stabilizing didoe DW two ends and be connected with by the base-emitter of pliotron T, constant current value and adjust potentiometer RW and constant current value current-limiting resistance R
1The series arm of forming.Be serially connected with n resistance R between the collector electrode of described DC power supply anode and pliotron
2-R
n, 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 (4)
1, a kind of 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.
3, a kind of semiconductor lighting constant-current supply as claimed in claim 1 is characterized in that: be serially connected with constant current value and adjust potentiometer between pliotron emitter and constant current value qualification resistance.
4, a kind of semiconductor lighting constant-current supply as claimed in claim 1, it is characterized in that: described pliotron should be the triode that withstand voltage satisfies circuit requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067198 CN2715458Y (en) | 2004-06-17 | 2004-06-17 | Semiconductor illuminating constant current supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067198 CN2715458Y (en) | 2004-06-17 | 2004-06-17 | Semiconductor illuminating constant current supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2715458Y true CN2715458Y (en) | 2005-08-03 |
Family
ID=34873624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420067198 Expired - Fee Related CN2715458Y (en) | 2004-06-17 | 2004-06-17 | Semiconductor illuminating constant current supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2715458Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707828B (en) * | 2009-05-20 | 2012-12-05 | 海洋王照明科技股份有限公司 | Constant-current source driving circuit with open circuit protection and adopting LED |
| CN106231741A (en) * | 2016-10-13 | 2016-12-14 | 伊戈尔电气股份有限公司 | The anti-dim light circuit of the LED light source that a kind of linear constant current drives |
-
2004
- 2004-06-17 CN CN 200420067198 patent/CN2715458Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707828B (en) * | 2009-05-20 | 2012-12-05 | 海洋王照明科技股份有限公司 | Constant-current source driving circuit with open circuit protection and adopting LED |
| CN106231741A (en) * | 2016-10-13 | 2016-12-14 | 伊戈尔电气股份有限公司 | The anti-dim light circuit of the LED light source that a kind of linear constant current drives |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Effective date of registration: 20070401 Pledge (preservation): Pledge |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of registration: 20070806 Pledge (preservation): Pledge |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Effective date of registration: 20070806 Pledge (preservation): Pledge |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20090226 Pledge (preservation): Pledge registration |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050803 |