CN202738177U - Drive circuit of AC LED lamp - Google Patents
Drive circuit of AC LED lamp Download PDFInfo
- Publication number
- CN202738177U CN202738177U CN2012202773405U CN201220277340U CN202738177U CN 202738177 U CN202738177 U CN 202738177U CN 2012202773405 U CN2012202773405 U CN 2012202773405U CN 201220277340 U CN201220277340 U CN 201220277340U CN 202738177 U CN202738177 U CN 202738177U
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- China
- Prior art keywords
- circuit
- drive circuit
- led lamp
- light emitting
- led
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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.)
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Abstract
The utility model relates to a drive circuit of an AC LED lamp, and the drive circuit comprises a rectification circuit, the drive circuit is characterized in that an AC side of the rectification circuit is directly connected with AC output terminal, a DC side of the rectification circuit is connected in series with a partial pressure current limiting circuit and a LED light-emitting array, the drive circuit can realize normal luminescence of a light emitting diode without using a drive power source, AC current is directly used for supplying power to the light emitting diode, circuits of LED product are simplified, and photoelectric conversion efficiency is improved.
Description
Technical field
The utility model relates to a kind of drive circuit of LED lighting device, particularly a kind of LED lamp drive circuit of directly using AC-powered.
Background technology
Present led light source is the semiconductor device of low voltage operating, must provide the suitable direct current could be normally luminous, the luminous technology of DC driven led light source is more and more ripe, because the power supply that our normal lighting uses is High Level AC Voltage, so must obtain with the technology of step-down lower voltage, commonly used is transformer or Switching Power Supply step-down, then exchange conversion is become direct current, be transformed into again dc constant current power supply, just can impel led light source luminous, therefore the system applies scheme of DC driven led light source must be: transformer+rectification or Switching Power Supply+constant-current source, such supply power mode is so that circuit complicated, and photoelectric conversion efficiency is relatively low.
Summary of the invention
The purpose of this utility model is to provide a kind of drive circuit of AC LED lamp, and this drive circuit can realize need not driving power directly makes light-emitting diode normally luminous by Alternating Current Power Supply, has simplified the circuit of LED product, improves photoelectric conversion efficiency.
The technical solution of the utility model is: a kind of drive circuit of AC LED lamp, comprise rectification circuit, it is characterized in that: the AC of described rectification circuit directly links to each other with the output of alternating current, and the DC side of described rectification circuit is in series with dividing potential drop current-limiting circuit and LED light emitting array.
Described dividing potential drop current-limiting circuit can be made of some resistance of series connection.
Described LED light emitting array is made of some light-emitting diodes of series connection.
The utility model has the advantage of: circuit is simple, reliability is high, cost is low, need not debug; Adopt the resistance current limliting, reliability and durability, cost is low, makes easily; Greatly improved electricity conversion.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
A kind of drive circuit of AC LED lamp comprises rectification circuit 1, it is characterized in that: the AC of described rectification circuit directly links to each other with the output of alternating current, and the DC side of described rectification circuit is in series with dividing potential drop current-limiting circuit 2 and LED light emitting array 3.
Described dividing potential drop current-limiting circuit can be made of some resistance of series connection, the pressure drop at restriction LED light emitting array two ends, the safety of assurance LED light emitting array.
Described LED light emitting array is made of some light-emitting diodes 4 of series connection, can improve the two ends input voltage of diode.
The above only is preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (3)
1. the drive circuit of an AC LED lamp comprises rectification circuit, it is characterized in that: the AC of described rectification circuit directly links to each other with the output of alternating current, and the DC side of described rectification circuit is in series with dividing potential drop current-limiting circuit and LED light emitting array.
2. the drive circuit of AC LED lamp according to claim 1 is characterized in that: described dividing potential drop current-limiting circuit can be made of some resistance of series connection.
3. the drive circuit of AC LED lamp according to claim 1 is characterized in that: described LED light emitting array is made of some light-emitting diodes of series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202773405U CN202738177U (en) | 2012-06-13 | 2012-06-13 | Drive circuit of AC LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202773405U CN202738177U (en) | 2012-06-13 | 2012-06-13 | Drive circuit of AC LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202738177U true CN202738177U (en) | 2013-02-13 |
Family
ID=47663823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202773405U Expired - Fee Related CN202738177U (en) | 2012-06-13 | 2012-06-13 | Drive circuit of AC LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202738177U (en) |
-
2012
- 2012-06-13 CN CN2012202773405U patent/CN202738177U/en not_active Expired - Fee Related
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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: 20130213 Termination date: 20150613 |
|
| EXPY | Termination of patent right or utility model |