CN202276514U - LED indicating lamp circuit - Google Patents
LED indicating lamp circuit Download PDFInfo
- Publication number
- CN202276514U CN202276514U CN2011203754267U CN201120375426U CN202276514U CN 202276514 U CN202276514 U CN 202276514U CN 2011203754267 U CN2011203754267 U CN 2011203754267U CN 201120375426 U CN201120375426 U CN 201120375426U CN 202276514 U CN202276514 U CN 202276514U
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- China
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- rectifier bridge
- resistance
- optical coupler
- emitting diode
- resistor
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Abstract
The utility model relates to an LED indicating lamp circuit which includes a power supply VCC, a voltage reducing element, a first rectifier bridge, a second rectifier bridge, an optical coupler, a light emitting diode, a first resistor, a second resistor, and a third resistor. The power supply VCC is connected with the input terminal of the first rectifier bridge via the voltage reducing element and the first resistor, and the power supply VCC is connected with the input terminal of the second rectifier bridge via the second resistor and the third resistor. The anode output terminal of the first rectifier bridge is connected with the output terminal of the optical coupler, and the cathode output terminal of the first rectifier bridge is connected with the cathode of the light emitting diode. The anode of the light emitting diode is connected with the output terminal of the optical coupler. The output terminal of the second rectifier bridge is connected with the input terminal of the optical coupler. Compared with the prior art, the LED indicating lamp circuit has a wide application scope and is safe and reliable.
Description
Technical field
The utility model relates to a kind of LED light circuit, especially relates to a kind of LED light circuit.
Background technology
Low-voltage electrical apparatus and appliance switch industry indication at present was a light source with incandescent lamp, neon bulb in the past; Progressively change into the LED light-emitting diode and be light source, be example, the φ 22 serial indicator light led light sources of company's production such as Siemens of domestic well-known enterprise (APT), sky, Shanghai ease electrical equipment at present at present with φ 22 serial indicator lights; A common fault is all arranged; When using AC220V or other voltage, it is luminous that LED just begins starter during energising pact＜10V, and inquiry LED manufacturer; This is a common fault on the present LED market; It is luminous that the low-voltage led chip just begins starter, and it is dark that just voltage does not reach the meeting of rated value light, and this type high voltage indicator light all is to adopt capacitance decompression or resistance step-down or capacitance resistance to combine step-down at present.
Now some client proposes, have do around or can cause the signal misoperation like this during induced current, can not use.
The utility model content
The purpose of the utility model is exactly to provide a kind of scope of application wide, safe and reliable LED light circuit for the defective that overcomes above-mentioned prior art existence.
The purpose of the utility model can realize through following technical scheme:
A kind of LED light circuit; It is characterized in that; Comprise power supply VCC, voltage drop element, first rectifier bridge, second rectifier bridge, optical coupler, light-emitting diode, first resistance, second resistance and the 3rd resistance; Described power supply VCC is connected with the input of first rectifier bridge through voltage drop element, first resistance respectively; Described power supply VCC is connected with the input of second rectifier bridge through second resistance, the 3rd resistance respectively, and the cathode output end of described first rectifier bridge is connected with the output of optical coupler, and the cathode output end of described first rectifier bridge is connected with the negative pole of light-emitting diode; The positive pole of described light-emitting diode is connected with the output of optical coupler, and the output of described second rectifier bridge is connected with the input of optical coupler.
Described voltage drop element is electric capacity or the 4th resistance.
Described first rectifier bridge, second rectifier bridge are paster bridge heap MB6S.
Compared with prior art, the utlity model has following advantage:
1, the scope of application is wide: be fit to various customer demands, solved to circuit loop have do around or the induced current customer demand.
2, safe and reliable: as can effectively to prevent the misoperation of low pressure priming signal, avoid accident.
Description of drawings
Fig. 1 for the utility model can anti-low-voltage starter LED light with capacity voltage dropping circuit figure;
Fig. 2 for the utility model can anti-low-voltage starter LED light with resistance drop volt circuit figure.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of LED light circuit; Comprise power supply VCC, voltage drop element, first rectifier bridge 3, second rectifier bridge 6, optical coupler 5, light-emitting diode 4, first resistance 1, second resistance 8 and the 3rd resistance 7; Described power supply VCC is connected with the input of first rectifier bridge 3 through voltage drop element, first resistance 1 respectively; Described power supply VCC is connected with the input of second rectifier bridge 6 through second resistance 8, the 3rd resistance 7 respectively, and the cathode output end of described first rectifier bridge 3 is connected with the output of optical coupler 5, and the cathode output end of described first rectifier bridge 3 is connected with the negative pole of light-emitting diode 4; The positive pole of described light-emitting diode 4 is connected with the output of optical coupler 5, and the output of described second rectifier bridge 6 is connected with the input of optical coupler 5.Described voltage drop element is electric capacity 2 or the 4th resistance 9.Described first rectifier bridge 3, second rectifier bridge 6 are paster bridge heap MB6S.
Described light-emitting diode 4: refer to the luminous element of LED class, overall dimension, shape be fixedly requirement not, as long as it is just passable to send out the luminous LED of ability.
Described electric capacity 2: select for use or need not according to rated voltage.
Through the 4th resistance 9 (or electric capacity 2) step-down and rectification, make LED form a loop, be connected on the LED loop to output switch on the optical coupler 5, therefore have only when optical coupler 5 work, LED could form a loop, carries out work.
The LED light circuit of the utility model is an example with input AC220V voltage, adopts resistance step-down form; First resistance 1 is selected 30K Ω/2W metalfilmresistor for use; The 4th resistance 9 is selected 15K Ω/2W metalfilmresistor for use, and first rectifier bridge 3 adopts paster square (MB6S) rectifier bridge, and light-emitting diode 4 adopts φ 5*4.5 (mm) light-emitting diode; Optical coupler 5 is adopted the PC817 optical coupler; Second rectifier bridge 6 adopts paster square (MB6S) rectifier bridge, and the 3rd resistance 7 adopts 10M Ω/12W metalfilmresistor, and second resistance 8 is connecting resistance not; Direct lead-in wire is made loop may command AC or DC80V voltage with interior LED starter (the starting voltage size mainly is the resistance value of adjusting the 3rd resistance 7 and second resistance 8) not by this circuit.
Claims (3)
1. LED light circuit; It is characterized in that; Comprise power supply VCC, voltage drop element, first rectifier bridge, second rectifier bridge, optical coupler, light-emitting diode, first resistance, second resistance and the 3rd resistance; Described power supply VCC is connected with the input of first rectifier bridge through voltage drop element, first resistance respectively; Described power supply VCC is connected with the input of second rectifier bridge through second resistance, the 3rd resistance respectively, and the cathode output end of described first rectifier bridge is connected with the output of optical coupler, and the cathode output end of described first rectifier bridge is connected with the negative pole of light-emitting diode; The positive pole of described light-emitting diode is connected with the output of optical coupler, and the output of described second rectifier bridge is connected with the input of optical coupler.
2. a kind of LED light circuit according to claim 1 is characterized in that, described voltage drop element is electric capacity or the 4th resistance.
3. a kind of LED light circuit according to claim 1 is characterized in that, described first rectifier bridge, second rectifier bridge are paster bridge heap MB6S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203754267U CN202276514U (en) | 2011-09-30 | 2011-09-30 | LED indicating lamp circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203754267U CN202276514U (en) | 2011-09-30 | 2011-09-30 | LED indicating lamp circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202276514U true CN202276514U (en) | 2012-06-13 |
Family
ID=46196845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203754267U Expired - Lifetime CN202276514U (en) | 2011-09-30 | 2011-09-30 | LED indicating lamp circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202276514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037561A (en) * | 2011-09-30 | 2013-04-10 | 上海永星电子开关有限公司 | Light-emitting diode (LED) indicator lamp circuit capable of resisting low voltage starting |
-
2011
- 2011-09-30 CN CN2011203754267U patent/CN202276514U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037561A (en) * | 2011-09-30 | 2013-04-10 | 上海永星电子开关有限公司 | Light-emitting diode (LED) indicator lamp circuit capable of resisting low voltage starting |
| CN103037561B (en) * | 2011-09-30 | 2015-12-02 | 上海永星电子开关有限公司 | A kind of can the LED light circuit of anti-low-voltage starter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120613 |
|
| CX01 | Expiry of patent term |