CN202652594U - Light emitting diode driver possessing protection path - Google Patents
Light emitting diode driver possessing protection path Download PDFInfo
- Publication number
- CN202652594U CN202652594U CN 201220316409 CN201220316409U CN202652594U CN 202652594 U CN202652594 U CN 202652594U CN 201220316409 CN201220316409 CN 201220316409 CN 201220316409 U CN201220316409 U CN 201220316409U CN 202652594 U CN202652594 U CN 202652594U
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- Prior art keywords
- emitting diode
- light emitting
- rectification unit
- light
- rectifier
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Abstract
The utility model discloses a light emitting diode driver possessing a protection path, comprising a rectifier and a light emitting diode set in connection with the rectifier. The rectifier comprises a rectification unit, a first capacitor and a rectifier diode. The rectification unit is provided with two input terminals and two output terminals; an input terminal of the rectification unit is in connection with a first resistor; an output terminal of the rectification unit is in series connection with the rectifier diode and is then in connection with the light emitting diode set. Another output terminal of the rectification unit is in connection with a ground wire. Two terminals of the first capacitor are respectively in connection with the two output terminals of the rectification unit. The light emitting diode set comprises a plurality of light emitting diodes in series connection; each light emitting diode in the light emitting diode set is in parallel connection with a reversal connection voltage-stabiliser. By employing the structure, the light emitting diode driver possessing a protection path can possess a simple whole structure and is convenient to realize; in addition, the light emitting diode driver possessing a protection path can be in parallel connection with a circuit branch of the light emitting diodes to form a protection circuit so as to avoid open circuit of the light emitting diode driver.
Description
Technical field
The utility model relates to lighting apparatus, specifically has the LED drive of protection path.
Background technology
Along with the development of society, people are more and more higher to the requirement of lighting apparatus, and operating voltage is low, light efficiency is high because LED has, so the research of LED and use more and more extensive.The LED lamp needs many lamp pearls to be together in series or parallel and could to work in use, and it is lower to adopt parallel way to drive the required voltage of a plurality of LED, but because the forward voltage drop of each LED is different, so the brightness of each LED is different.When adopting the type of drive of tandem type, the brightness of each LED is identical, when opening circuit but one of them or several LED break down, circuit is opened circuit and cisco unity malfunction.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art; provide a kind of mode of series connection that adopts to drive light-emitting diode, and the LED drive with protection path that when one or several light-emitting diode breaks down, can avoid circuit to open circuit.
The purpose of this utility model is achieved through the following technical solutions: the LED drive with protection path, comprise rectifier and the light-emitting diode group that is connected with rectifier, described rectifier comprises rectification unit, the first electric capacity and rectifier diode, described rectification unit is provided with two inputs and two outputs, be connected with the first resistance on the input of rectification unit, be connected with the light-emitting diode group behind the output series connection rectifier diode of rectification unit, be connected with earth connection on another output of rectification unit, the two ends of described the first electric capacity are connected on two outputs of rectification unit; Described light-emitting diode group comprises the light-emitting diode of a plurality of series connection, all is parallel with the voltage-stabiliser tube of a reversal connection in the light-emitting diode group on each light-emitting diode, the output head grounding of described light-emitting diode group.The utility model is when using, and two inputs of rectification unit receive the input of supply power voltage.The conducting voltage of each light-emitting diode should be lower than the voltage stabilizing value of voltage-stabiliser tube in parallel on it in the utility model, otherwise voltage-stabiliser tube in parallel can divide and pours off one part of current and make light-emitting diode dimmed even do not work.
Described rectification unit is bridge rectifier.
Because thermistor its resistance when voltage increases increases, thereby can produce overcurrent protection, as preferably, described the first resistance is thermistor.
Described light-emitting diode group comprises three light-emitting diodes.
Compared with prior art, the utlity model has following beneficial effect: the utility model comprises rectifier and the light-emitting diode group that is connected with rectifier, wherein, the light-emitting diode group comprises the light-emitting diode of a plurality of series connection, all be parallel with the voltage-stabiliser tube of a reversal connection in the light-emitting diode group on each light-emitting diode, the utility model overall structure is simple, be convenient to realize, when the utility model is used, the branch road that voltage-stabiliser tube in parallel consists of on each light-emitting diode consists of protective circuit of the present utility model, when the lamp pearl of certain light-emitting diode was opened circuit, the voltage-stabiliser tube in parallel with it devoted oneself to work, thereby can avoid circuit to open circuit; The utility model adopts the mode of series connection to drive light-emitting diode, and the brightness on each light-emitting diode is consistent, is convenient to of the present utility model applying.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The corresponding name of Reference numeral is called in the accompanying drawing: 1-rectification unit, R1-first resistance, C1-first electric capacity, D1-rectifier diode, LED1-first light-emitting diode, LED2-second light-emitting diode, LED3-the 3rd light-emitting diode, DW1-first voltage-stabiliser tube, DW2-second voltage-stabiliser tube, DW3-the 3rd voltage-stabiliser tube.
Embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing, but execution mode of the present utility model is not limited to this.
Embodiment:
As shown in Figure 1; LED drive with protection path; comprise shell and setting internal circuit in the enclosure; wherein; internal circuit comprises rectifier and the light-emitting diode group that is connected with rectifier; wherein; rectifier comprises rectification unit 1; the first capacitor C 1 and rectifier diode D1; rectification unit 1 is bridge rectifier; rectification unit 1 is provided with two inputs and two outputs; two inputs of rectification unit 1 receive the input of supply power voltage, are connected with the first resistance R 1, the first resistance R 1 preferred thermistor that adopts on the input of rectification unit 1.Be connected with the light-emitting diode group behind the output series connection rectifier diode D1 of rectification unit 1, be connected with earth connection on another output of rectification unit 1, the two ends of the first capacitor C 1 are connected on two outputs of rectification unit 1.
The light-emitting diode group comprises the light-emitting diode of a plurality of series connection, and all is parallel with the voltage-stabiliser tube of a reversal connection in the light-emitting diode group on each light-emitting diode.Be provided with three light-emitting diodes in the present embodiment, three light-emitting diodes are respectively the first voltage-stabiliser tube DW1, the second voltage-stabiliser tube DW2 and the 3rd voltage-stabiliser tube DW3 that is parallel with respectively reversal connection on the first LED 1, the second LED 2 and 3, three light-emitting diodes of the 3rd LED.The output head grounding of light-emitting diode is specially on the circuit between the 3rd voltage-stabiliser tube DW3 and the 3rd LED 3 and is connected with ground path.
As mentioned above, then can well realize the utility model.
Claims (4)
1. the LED drive that has the protection path, it is characterized in that: comprise rectifier and the light-emitting diode group that is connected with rectifier, described rectifier comprises rectification unit (1), the first electric capacity (C1) and rectifier diode (D1), described rectification unit (1) is provided with two inputs and two outputs, be connected with the first resistance (R1) on the input of rectification unit (1), be connected with the light-emitting diode group behind the output series connection rectifier diode (D1) of rectification unit (1), be connected with earth connection on another output of rectification unit (1), the two ends of described the first electric capacity (C1) are connected on two outputs of rectification unit (1); Described light-emitting diode group comprises the light-emitting diode of a plurality of series connection, all is parallel with the voltage-stabiliser tube of a reversal connection in the light-emitting diode group on each light-emitting diode, the output head grounding of described light-emitting diode group.
According to claim 1 have the protection path LED drive, it is characterized in that: described rectification unit (1) is bridge rectifier.
According to claim 1 have the protection path LED drive, it is characterized in that: described the first resistance (R1) is thermistor.
4. according to claim 1～3 each described have the protection path LED drive, it is characterized in that: described light-emitting diode group comprises three light-emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220316409 CN202652594U (en) | 2012-07-03 | 2012-07-03 | Light emitting diode driver possessing protection path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220316409 CN202652594U (en) | 2012-07-03 | 2012-07-03 | Light emitting diode driver possessing protection path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202652594U true CN202652594U (en) | 2013-01-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220316409 Expired - Fee Related CN202652594U (en) | 2012-07-03 | 2012-07-03 | Light emitting diode driver possessing protection path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202652594U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280054A (en) * | 2013-05-30 | 2013-09-04 | 成都荣耀科技有限公司 | Transformer anti-theft system of low-voltage electric power circuit |
| CN103325196A (en) * | 2013-05-30 | 2013-09-25 | 成都荣耀科技有限公司 | Low-voltage electric power circuit anti-theft system with warning function |
| CN103533698A (en) * | 2012-07-03 | 2014-01-22 | 成都市宏山科技有限公司 | Light-emitting diode driver with protection path |
-
2012
- 2012-07-03 CN CN 201220316409 patent/CN202652594U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533698A (en) * | 2012-07-03 | 2014-01-22 | 成都市宏山科技有限公司 | Light-emitting diode driver with protection path |
| CN103280054A (en) * | 2013-05-30 | 2013-09-04 | 成都荣耀科技有限公司 | Transformer anti-theft system of low-voltage electric power circuit |
| CN103325196A (en) * | 2013-05-30 | 2013-09-25 | 成都荣耀科技有限公司 | Low-voltage electric power circuit anti-theft system with warning function |
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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: 20130102 Termination date: 20130703 |