CN205336595U - LED high frequency drive circuit - Google Patents
LED high frequency drive circuit Download PDFInfo
- Publication number
- CN205336595U CN205336595U CN201620061027.6U CN201620061027U CN205336595U CN 205336595 U CN205336595 U CN 205336595U CN 201620061027 U CN201620061027 U CN 201620061027U CN 205336595 U CN205336595 U CN 205336595U
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- led
- high frequency
- unit
- regulator diode
- current regulator
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Abstract
The utility model relates to a LED high frequency drive circuit especially relates to the high frequency drive circuit that a reducible LED gives out heat. Including power supply circuit unit, LED luminescence unit and high frequency pulse generating circuit unit, be provided with current regulator diode D6 between the input of the output of power supply circuit unit and LED luminescence unit, current regulator diode D6 pass through germanium tube D16 and connect high frequency pulse generating circuit unit, high frequency pulse generating circuit unit is connected to germanium tube D16's negative pole. The contribution lies in going into current regulator diode D6 through cluster in drive circuit, realizes the permanent current output of driving source, the current regulator diode of high -frequency pulse signal control simultaneously D6 break -make, the high -power LED of transient state drive not only can guarantee that LED lasts, stable, high -efficient work, has reduced LED chip calorific capacity to a certain extent, has improved LED lamps and lanterns life to not high to the requirement of input power, whole energy -conservation can reach about 40%.
Description
[technical field]
This utility model relates to a kind of LED drive circuit, especially relates to a kind of high frequency drive circuit reducing LED caloric value。
[background technology]
In recent years along with white light LEDs, the particularly appearance of large power white light LED, LED has as a kind of novel green lighting source that volume is little, mechanical strength is big, low in energy consumption, the life-span is long, it is easy to regulate and control and the feature such as pollution-free, being widely used the fields such as auto lamp, traffic lights, backlight and illumination at present, its drive circuit also emerges in an endless stream, but most of drive sources are inefficient all without solving on the market at present, the problems such as LED luminosity is inconsistent, and caloric value is big。
[summary of the invention]
This utility model aims to solve the problem that the problems referred to above provide a kind of LED high frequency drive circuit, shortens the conduction time in the unit interval to reduce LED chip caloric value by introducing high-frequency controling signal, improves LED luminous efficiency。
For achieving the above object, a kind of LED high frequency drive circuit of the present utility model includes power circuit unit, LED luminescence unit and high-frequency impulse circuit for generating unit, it is provided with current regulator diode D6 between the outfan and the input of LED luminescence unit of power circuit unit, described current regulator diode D6 connects high-frequency impulse circuit for generating unit by germanium tube D16, and the negative pole of germanium tube D16 connects high-frequency impulse circuit for generating unit。
Further, described high-frequency impulse circuit for generating unit builds based on chip, at chip periphery collocation adjustable resistance R9。
Further, described power circuit unit realizes AC/DC and DC/DC two step Power convert, and electric main is converted to 20V unidirectional current, described power circuit unit is provided with high frequency transformer, the magnetic core former limit N1 coiling 12 of described high frequency transformer is enclosed, and N2 coiling 210 is enclosed, and secondary coiling 40 is enclosed。
Contribution of the present utility model is in that by sealing in current regulator diode D6 in the driving circuit, it is achieved the Constant current output of drive source；High-frequency pulse signal controls current regulator diode D6 break-make simultaneously, transient state drives great power LED, can not only ensure that LED is lasting, stable, work efficiently, reduce LED chip caloric value to a certain extent, improve LED lamp service life, and input power is less demanding, and whole energy can reach about 40%。
[accompanying drawing explanation]
Fig. 1 is circuit diagram of the present utility model。
[detailed description of the invention]
The following example is to be explained further of the present utility model and supplement, and this utility model is not constituted any limitation。
Embodiment 1
As shown in Figure 1, a kind of LED high frequency drive circuit of the present embodiment includes power circuit unit, LED luminescence unit and high-frequency impulse circuit for generating unit, it is provided with current regulator diode D6 between the outfan and the input of LED luminescence unit of power circuit unit, described current regulator diode D6 connects high-frequency impulse circuit for generating unit by germanium tube D16, and the negative pole of germanium tube D16 connects high-frequency impulse circuit for generating unit。Accessing current regulator diode D6, current regulator diode D6 between the outfan and the input of LED luminescence unit of power circuit unit and connect high-frequency impulse circuit for generating unit by germanium tube D16, the negative pole of germanium tube D16 connects high-frequency impulse circuit for generating unit。During work, when germanium tube D16 backward end is low level, current regulator diode D6 turns off, and LED extinguishes；When germanium tube D16 backward end is high level, current regulator diode D6 conducting one big electric current of output, LED lights。The operating voltage range of this kind of design current regulator diode D6 is relatively wide, and when input direct voltage wide fluctuations, drive circuit remains able to ensure constant current output, and will not burn because of load short circuits。It is easily achieved light modulation by regulating the dutycycle of high-frequency pulse signal, and does not have LED chroma offset phenomenon。High-frequency mode is adopted to drive the caloric value reducing LED, thus simplifying the heat dissipation design of LED lamp；Additionally adopt high frequency constant current drive mode to compare lasting constant-current driving and can save the electric energy of about 40%, reach energy-efficient purpose。
Embodiment 2
As it is shown in figure 1, the unit of high-frequency impulse circuit for generating described in the present embodiment builds based on chip, at chip periphery collocation adjustable resistance R9。Chip in the present embodiment is NE555 chip, and it is the adjustable high-frequency impulse circuit for generating of 200kHz dutycycle 1/6-5/6 that NE555 chip constitutes frequency, controls current regulator diode D6 break-make by germanium tube D16；And regulate adjustable resistance R9 and realize PWM light modulation。
Embodiment 3
As shown in Figure 1, power circuit unit described in the present embodiment realizes AC/DC and DC/DC two step Power convert, electric main is converted to 20V unidirectional current, described power circuit unit is provided with high frequency transformer, the magnetic core of described high frequency transformer is EE16, former limit N1 coiling 12 is enclosed, and N2 coiling 210 is enclosed, and secondary coiling 40 is enclosed。In figure, the D5 of power circuit unit is 6.2V Zener diode, and in order to regulated output voltage, Q1 is power-type switching tube MJE13003；LED luminescence unit is consisted of the multiple LED of serial or parallel connection。
Although this utility model having been disclosed by above example; but protection domain of the present utility model is not limited thereto; when not necessarily departing from this utility model design, deformation that above each component is done, replacement etc. all will fall in right of the present utility model。
Claims (3)
1. a LED high frequency drive circuit, including power circuit unit, LED luminescence unit and high-frequency impulse circuit for generating unit, it is characterized in that: between the outfan and the input of LED luminescence unit of power circuit unit, be provided with current regulator diode D6, described current regulator diode D6 connects high-frequency impulse circuit for generating unit by germanium tube D16, and the negative pole of described germanium tube D16 connects high-frequency impulse circuit for generating unit。
2. a kind of LED high frequency drive circuit as claimed in claim 1, it is characterised in that: described high-frequency impulse circuit for generating unit builds based on chip, at chip periphery collocation adjustable resistance R9。
3. a kind of LED high frequency drive circuit as claimed in claim 2, it is characterized in that: described power circuit unit realizes AC/DC and DC/DC two step Power convert, electric main is converted to 20V unidirectional current, described power circuit unit is additionally provided with high frequency transformer, the magnetic core former limit N1 coiling 12 of described high frequency transformer is enclosed, N2 coiling 210 is enclosed, and secondary coiling 40 is enclosed。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620061027.6U CN205336595U (en) | 2016-01-21 | 2016-01-21 | LED high frequency drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620061027.6U CN205336595U (en) | 2016-01-21 | 2016-01-21 | LED high frequency drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205336595U true CN205336595U (en) | 2016-06-22 |
Family
ID=56318456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620061027.6U Expired - Fee Related CN205336595U (en) | 2016-01-21 | 2016-01-21 | LED high frequency drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205336595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162988A (en) * | 2016-06-29 | 2016-11-23 | 海宁市智慧光电有限公司 | A kind of high-frequency drive low thermal resistance LED light source |
-
2016
- 2016-01-21 CN CN201620061027.6U patent/CN205336595U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162988A (en) * | 2016-06-29 | 2016-11-23 | 海宁市智慧光电有限公司 | A kind of high-frequency drive low thermal resistance LED light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 528200 Guangdong, Foshan, Guangdong, Nansha District, Luo Shan town, Guangdong new source of light industrial base A core area, 16, five, two Patentee after: Guangdong Sino German science and Technology Co., Ltd. Address before: 528200, No. 7, No. 24 Fenjiang North Road, Chancheng District, Foshan, Guangdong. Patentee before: FOSHAN ZHONGDE PHOTOELECTRIC SPECIAL LIGHTING CO., LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: LED high frequency drive circuit Effective date of registration: 20180810 Granted publication date: 20160622 Pledgee: Bank of China Limited by Share Ltd Foshan branch Pledgor: Guangdong Sino German science and Technology Co., Ltd. Registration number: 2018440000233 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20200121 |