CN206640839U - A kind of LED drive circuit - Google Patents
A kind of LED drive circuit Download PDFInfo
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- CN206640839U CN206640839U CN201720323760.5U CN201720323760U CN206640839U CN 206640839 U CN206640839 U CN 206640839U CN 201720323760 U CN201720323760 U CN 201720323760U CN 206640839 U CN206640839 U CN 206640839U
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Abstract
The utility model proposes a kind of LED drive circuit,Including the second diode for accessing power supply,Second diode is connected with the 7th resistance,The both ends of 7th resistance connect the 6th resistance and the 4th electric capacity respectively,7th one end of resistance away from the second diode is connected with the IGCT and LED of parallel connection,Node between IGCT and LED connects controller by the 5th resistance and the first diode,7th one end of resistance away from the second diode is also associated with second resistance,The other end of second resistance connects controller after connecting the second electric capacity by variable resistor,7th one end of resistance away from the second diode is also associated with 3rd resistor,The other end of 3rd resistor after the 3rd the second electric capacity of capacitance connection by connecting controller,The controller is connected with clock module and detection module,The utility model can be implemented to dim at times,Can be according to the flow of the people situation on road surface,Illuminance curve is rationally set,While ensureing road surface brightness,And can reaches the purpose of energy-conservation.
Description
Technical field
The utility model belongs to technical field of LED illumination, more particularly to a kind of LED drive circuit.
Background technology
At present, conventional LED drive power is single constant voltage source or constant-current supply, if client needs different electricity
Pressure and current value, it is necessary to customize nonstandard product again.It is various so to result in the product category of driver, even as high as thousands of
Kind is all very complicated from stock, production and warehouse for user and producer.
Conventional driving power can not be modified again after the good Current Voltage parameter of factory setting, cause light fixture from
From when upper electric, voltage and current is invariable, and the illuminance of light fixture is also invariable, at the few road surface of flow of the people, still
High brightness is kept, causes the waste of electric energy.
Therefore, need a kind of LED drive circuit badly now, can implement to dim at times, can be according to the flow of the people on road surface
Situation, illuminance curve is rationally set, while ensureing road surface brightness, and can reaches the purpose of energy-conservation.
Utility model content
The utility model proposes a kind of LED drive circuit, solve the problems of the prior art.
What the technical solution of the utility model was realized in:LED drive circuit, including for accessing the 2nd 2 of power supply
Pole pipe, second diode are connected with the 7th resistance, and the both ends of the 7th resistance connect the 6th resistance and the 4th electric capacity respectively, the
The one end of seven resistance away from the second diode is connected with the IGCT of parallel connection and LED, the node between IGCT and LED lead to
The 5th resistance and the first diode connection controller are crossed, the 7th one end of resistance away from the second diode is also associated with the second electricity
Resistance, the other end of second resistance after variable resistor the second electric capacity of connection by connecting controller, and the 7th resistance is away from the two or two pole
One end of pipe is also associated with 3rd resistor, and the other end of 3rd resistor is controlled by being connected after the 3rd the second electric capacity of capacitance connection
Device, the controller are connected with clock module and detection module.
As a preferred embodiment, the detection module includes an infrared probe, infrared probe passes through one or three poles
Pipe connects the controller, the base stage of one end connecting triode of infrared probe, and the colelctor electrode of the triode connects the control
Device processed, the emitter stage of the triode after first resistor and the first electric capacity by connecting controller.
As a preferred embodiment, the triode is NPN triode.
As a preferred embodiment, the clock module includes a crystal oscillator, one end of crystal oscillator connects the control
Device, the both ends of crystal oscillator are grounded by the 5th electric capacity and the 6th electric capacity one respectively.
As a preferred embodiment, the power supply is 220V AC powers.
As a preferred embodiment, the 5th resistance is thermistor.
After employing above-mentioned technical proposal, the beneficial effects of the utility model are:It can realize and dim at times, can also
Independently according to stream of people's situation on road surface, Reasonable adjustment power output, illuminance curve is set, while ensureing road surface brightness, again
The purpose of energy-conservation can be reached;And there is the utility model maximum invariable power electric current to set, and can set dimming mode, carry out
The selection of timing dimming pattern, and carry out OTP temperature protections.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is electrical block diagram of the present utility model.
In figure, 1-;2-;3-;4-;5-;6-;7-;8-;9-;10-;11-;12-;13-.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in figure 1, this LED drive circuit, including for accessing the second diode D2 of power supply, second diode
D2 is connected with the 7th resistance R7, and the 7th resistance R7 both ends connect the 6th resistance R6 and the 4th electric capacity C4, the 7th resistance R7 respectively
One end away from the second diode D2 is connected with the IGCT BCR and LED of parallel connection, the node between IGCT BCR and LED
By the 5th resistance R5 and the first diode D1 connection controller ICs, the one end of the 7th resistance R7 away from the second diode D2 also connects
Be connected to second resistance R2, the second resistance R2 other end by connecting controller IC after variable resistor R4 the second electric capacity of connection C2,
The one end of 7th resistance R7 away from the second diode D2 is also associated with 3rd resistor R3, and the 3rd resistor R3 other end passes through the 3rd
Controller IC is connected after electric capacity C3 the second electric capacity of connection C2, the controller IC is connected with clock module and detection module.
The detection module includes an infrared probe, and infrared probe is red by a triode Q1 connections controller IC
One end connecting triode Q1 of outer probe base stage, the colelctor electrode of the triode Q1 connect the controller, the triode
Q1 emitter stage after first resistor R1 and the first electric capacity C1 by connecting controller.
The triode Q1 is NPN triode.
The clock module includes a crystal oscillator X1, and crystal oscillator X1 one end connects the controller IC, crystal oscillator X1 both ends point
It is not grounded by the 5th electric capacity C5 and the 6th electric capacity C6 mono-.
The power supply is 220V AC powers.
The 5th resistance R5 is thermistor.
The operation principle of the LED drive circuit is:220V AC voltage is through the second diode D2 halfwave rectifier, the 4th electric capacity
C4 is filtered, and is powered after the 6th resistance R6, the 7th resistance R7 partial pressures to on-off circuit.3rd resistor R3, the 4th resistance R4 composition are adjusted
Optical circuit.4th resistance R4 is in low-resistance, and controller IC control terminal is low level, and its output end is always low level, two-way brilliant lock
Pipe BCR ends.4th resistance R4 is in high resistant, and controller IC control terminal is high level, when infrared receiving terminal detects human body radiation
During the infrared ray gone out, controller IC output high level, bidirectional thyristor BCR conducting, LED is lit be timed to after, IC output
Low level bidirectional thyristors BCR ends, and in present embodiment, due to being provided with clock module, whole lighting time can at most set
6 periods are put, in preceding 7 hours of upper lamp, the brightness of light fixture 100%, after 7 hours, according to the curve set in advance, control
Device processed sends instruction, and electric current is turned down, and can be decreased so as to the brightness of light fixture, and energy consumption reduces, so as to reach secondary energy-saving
Effect.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (6)
1. a kind of LED drive circuit, it is characterised in that including the second diode for accessing power supply, second diode
The 7th resistance is connected with, the both ends of the 7th resistance connect the 6th resistance and the 4th electric capacity respectively, and the 7th resistance is away from the two or two pole
One end of pipe is connected with the IGCT of parallel connection and LED, the node between IGCT and LED pass through the 5th resistance and the one or two
Pole pipe connects controller, and the 7th one end of resistance away from the second diode is also associated with second resistance, the other end of second resistance
Controller is connected after connecting the second electric capacity by variable resistor, the 7th one end of resistance away from the second diode is also associated with the 3rd
Resistance, the other end of 3rd resistor after the 3rd the second electric capacity of capacitance connection by connecting controller, when the controller is connected with
Clock module and detection module.
2. LED drive circuit according to claim 1, it is characterised in that the detection module includes an infrared probe, red
It is outer to pop one's head in by the triode connection controller, the base stage of one end connecting triode of infrared probe, the triode
Colelctor electrode connects the controller, and the emitter stage of the triode after first resistor and the first electric capacity by connecting controller.
3. LED drive circuit according to claim 2, it is characterised in that the triode is NPN triode.
4. LED drive circuit according to claim 3, it is characterised in that the clock module includes a crystal oscillator, crystal oscillator
One end connects the controller, and the both ends of crystal oscillator are grounded by the 5th electric capacity and the 6th electric capacity one respectively.
5. LED drive circuit according to claim 4, it is characterised in that the power supply is 220V AC powers.
6. LED drive circuit according to claim 5, it is characterised in that the 5th resistance is thermistor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201720323760.5U CN206640839U (en) | 2017-03-28 | 2017-03-28 | A kind of LED drive circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201720323760.5U CN206640839U (en) | 2017-03-28 | 2017-03-28 | A kind of LED drive circuit |
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CN206640839U true CN206640839U (en) | 2017-11-14 |
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CN201720323760.5U Active CN206640839U (en) | 2017-03-28 | 2017-03-28 | A kind of LED drive circuit |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113272588A (en) * | 2019-01-02 | 2021-08-17 | 昕诺飞控股有限公司 | Lamp with safety circuit and safety circuit for such a lamp |
-
2017
- 2017-03-28 CN CN201720323760.5U patent/CN206640839U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113272588A (en) * | 2019-01-02 | 2021-08-17 | 昕诺飞控股有限公司 | Lamp with safety circuit and safety circuit for such a lamp |
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Address after: 266000 301 households in 2 buildings, 3 units, 25 Huayang Road, North District, Qingdao City, Shandong Province Patentee after: Qingdao Youruite Electronic Technology Co., Ltd. Address before: 266000 301 households in 2 buildings, 3 units, 25 Huayang Road, North District, Qingdao City, Shandong Province Patentee before: Qingdao best industry and Trade Co., Ltd. |