CN103841697A - IC chip and control circuit of LED directly driven by electronic ballast - Google Patents
IC chip and control circuit of LED directly driven by electronic ballast Download PDFInfo
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- 230000001681 protective effect Effects 0.000 claims description 29
- 230000005669 field effect Effects 0.000 claims description 24
- 230000002457 bidirectional effect Effects 0.000 claims description 23
- 239000003990 capacitor Substances 0.000 claims description 11
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 abstract description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 3
- 229910001507 metal halide Inorganic materials 0.000 abstract description 3
- 150000005309 metal halides Chemical class 0.000 abstract description 3
- 229910052708 sodium Inorganic materials 0.000 abstract description 3
- 239000011734 sodium Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 14
- 230000001276 controlling effect Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
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Abstract
The invention relates to an IC chip and control circuit of an LED directly driven by an electronic ballast. The IC chip and the control circuit of the LED are capable of solving problems, which exist in the prior different illumination lamps driven by electronic ballasts, that power loss is high, service life is short and air is polluted. Key points of the technical scheme are as follows: the IC chip includes an input pin and an output pin and also includes a rectifying circuit, a no-load protection circuit and a constant-current-source circuit. An input end of the rectifying circuit is connected with the input pin and an output end of the rectifying circuit is connected with an input end of the constant-current-source circuit through the no-load protection circuit. An output end of the constant-current-source circuit is connected with the output pin. The control circuit includes an output-power control circuit at an output end of the electric ballast, a filtering circuit rectified by the IC chip and a constant-current size control circuit of the IC chip. Through the IC chip and the control circuit of the LED directly driven by the electronic ballast, a user is enabled to adjust freely the size and an output power and the output size of a constant current and are suitable for an LED circuit and bring convenience to direct replacement of the prior different kinds of fluorescent lamps, metal halide lamps and sodium lamps driven by electronic ballasts.
Description
Technical field
The present invention is a kind of IC chip and control circuit thereof, particularly relates to IC chip and the control circuit thereof of the direct driving LED of a kind of electric ballast.
Background technology
LED has the advantages such as power consumption is little, long service life, extensively utilizes in fields such as illumination, demonstrations, as LED illuminating lamp, LED display, LED lamp decoration etc.Along with the pay attention to day by day of country to green light source, market and the application prospect of LED product are boundless.Because LED is by direct voltage drive, can not directly use line voltage, must convert with line voltage the LED driving power of direct voltage to.Current LED driving power is substantially all the constant-current driving power supply with Switching Power Supply form, but generally all has the shortcoming that cost is high.And it is well-known, the fluorescent lamp AC electron ballast developing history of existing more than 20 year, very ripe already technically, cost is also quite reasonable, under Same Efficieney condition, the cost of electric ballast only has 1/3rd of LED driving switch power supply cost, so utilize electric ballast driving LED to have a lot of advantages.
China Patent Publication No.: 102647838A, open day on August 22nd, 2012, a kind of modular converter of electric ballast driving LED is disclosed, this modular converter is connected between electric ballast and LED array, it is characterized in that described modular converter comprises the high frequency current-limiting circuit for regulating electronic ballast output end high-frequency and high-voltage alternating current, become the current rectifying and wave filtering circuit of steady direct current for rectifying and wave-filtering, adapt to the initial voltage stabilizing circuit of LED driving voltage and for regulating the required constant-current drive circuit by Current Control of LED for regulating, described high frequency current-limiting circuit, current rectifying and wave filtering circuit, initial voltage stabilizing circuit and constant-current drive circuit are connected.This technical scheme is utilized electric ballast driving LED, but in this technical scheme, have more power loss, particularly resistive element, inductance and triode wherein, has more power can be consumed in wherein, generate heat also many, to also there being considerable influence the useful life of circuit element.
Summary of the invention
There is more power loss in the various illuminating lamp technology that the object of the invention is for solving current existing electric ballast driving, particularly resistive element wherein, there is more power can be consumed in wherein, generate heat also many, short and air-polluting problem of life-span, provide a kind of and consume lessly, generate heat less, element simply, easily IC chip and the control circuit thereof of the direct driving LED of electric ballast of integrated, long service life.
The technical solution adopted for the present invention to solve the technical problems is: the IC chip of the direct driving LED of a kind of electric ballast; comprise input pin and output pin; also comprise rectification circuit, no-load protective circuit and constant-current source circuit; the input of rectification circuit is connected with input pin; the output of rectification circuit is connected with the input of constant-current source circuit by no-load protective circuit, and the output of described constant-current source circuit is connected with output pin.The present invention arranges like this, by the output current of electric ballast is carried out to rectification and constant current output, stable continuous current can be exported to LED circuit, the illumination of driving LED circuit, the present invention consumes less, generate heat less, element is simple, easily integrated, bidirectional thyristor Q1 is operated in half conducting state, play the effect of no-load protection, there is longer useful life, the present invention can pass through IC chip and peripheral circuit, by user's free adjustment power output size and constant current output size, can be applicable to various LED circuits, for existing various electric ballasts drive difform fluorescent lamp, as: straight lamp tube, annular lamp tube, H shape fluorescent tube, and metal halide lamp, high, low-pressure sodium lamp is directly replaced the condition that brings convenience.
As preferably, the IC chip of the described direct driving LED of electric ballast also comprises protective circuit, and the input of protective circuit is connected with input pin, and the output of described protective circuit is connected with the input of rectification circuit.Protective circuit is protected the high-frequency high-voltage circuit of the output of electric ballast, has prevented that high-frequency current distortion suddenly from damaging part electronic component in IC chip.
As preferably, the IC chip of the described direct driving LED of electric ballast is eight pin package chips, rectification circuit comprises diode D1, diode D2, diode D3 and diode D4, no-load protective circuit comprises diode D5, bidirectional thyristor Q1 and resistance R 3, the anode of diode D1 is connected with the negative electrode of diode D3, the anodic bonding of the anode of diode D3 and diode D4, the anodic bonding of the negative electrode of diode D4 and diode D2, the negative electrode of diode D2 is connected with the negative electrode of diode D1, the anode of diode D5 is connected with the negative electrode of diode D2 and the negative electrode of diode D1, the first anode of bidirectional thyristor Q1 is connected with the negative electrode of diode D2 and the negative electrode of diode D1, the anodic bonding of the anode of the second plate of bidirectional thyristor Q1 and diode D3 and diode D4, the control utmost point of bidirectional thyristor Q1 is connected with the negative electrode of diode D5 by resistance R 3, the anode of diode D1 leads to the first and second pins, the negative electrode of diode D4 leads to the 3rd pin and the 4th pin, the second plate of bidirectional thyristor Q1 leads to the 5th pin, the negative electrode of diode D5 leads to the 8th pin, the negative electrode of diode D5 is also connected with constant-current source circuit, constant-current source circuit is connected with the 6th pin and the 7th pin.Diode D1, diode D2, diode D3 and diode D4 composition rectification circuit; electric current is carried out to rectification; diode D5, resistance R 3 and bidirectional thyristor Q1 composition no-load protective circuit; in the time that IC chip output is unloaded; bidirectional thyristor Q1 is operated in half conducting state; play the effect of no-load protection, the setting of diode D5 has prevented directional current, has guaranteed the sense of current.
As preferably, described constant-current source circuit comprises triode Q3, field effect transistor Q2 and resistance R 4, the negative electrode of diode D5 is connected with the collector electrode of triode Q3 by resistance R 4, the anodic bonding of the anode of the emitter of triode Q3 and diode D3 and diode D4, the base stage of triode Q3 is connected with substrate and the source electrode of field effect transistor Q2, the grid of field effect transistor Q2 is connected with the collector electrode of triode Q3, the drain electrode of field effect transistor Q2 leads to the 7th pin, the source electrode of field effect transistor Q2 leads to the 6th pin, and the emitter of triode Q3 is connected with the 5th pin.In the present invention, use triode Q3 and field effect transistor Q2 to form constant-current source, wherein the present invention adopts field effect transistor Q2 but not adopts triode, because, field effect transistor is voltage control device, if adopt in the present invention triode to replace field effect transistor Q2 to have more loss and higher caloric value, the consumption in operation can affect the very fast useful life of IC chip and the LED circuit of driving time.
As preferably, described protective circuit comprises resistance R 1 and resistance R 2, and one end of resistance R 1 is connected with the first pin, and the other end of resistance R 1 is connected with the second pin, and one end of resistance R 2 is connected with the 3rd pin, and the other end of resistance R 2 is connected with the 4th pin.Protective circuit is protected the high-frequency high-voltage circuit of the output of electric ballast, has prevented that the instantaneous distortion of high-frequency current from damaging part electronic component in IC chip.And the simplicity of design of resistance R 1, resistance R 2 is easily gone, can reach design original intention.
As preferably, described resistance R 3 resistance value spans be 200K ohm to 330K ohm, the resistance value scope of described resistance R 4 is that 1.5M ohm is to 2M ohm.The resistance of resistance R 3 and resistance R 4 is so set, and can guarantee the gate voltage for bidirectional thyristor Q1, and is carried in the size of the voltage in resistance R 4 and resistance R 3, guarantees the voltage value of Constant current input end.
The control circuit of the direct driving LED of a kind of electric ballast, for driving LED circuit, comprise the IC chip of the direct driving LED of any one electric ballast as described in right 3 to 6 and the electric ballast that dual input four is exported, the control circuit of the described direct driving LED of electric ballast also comprises inductance L, resistance R T and capacitor C, the first output of electric ballast is electrically connected with IC chip first pin of the direct driving LED of electric ballast, the second output of electric ballast is electrically connected with IC chip second pin of the direct driving LED of electric ballast, the 3rd output of electric ballast is electrically connected with IC chip the 3rd pin of the direct driving LED of electric ballast, the 4th output of electric ballast is electrically connected with IC chip the 4th pin of the direct driving LED of electric ballast, the first end of resistance R T is electrically connected with IC chip the 6th pin of the direct driving LED of electric ballast, the second end of resistance R T is electrically connected with the IC chip of the direct driving LED of electric ballast the 5th pin, the anode of capacitor C is electrically connected with IC chip the 8th pin of the direct driving LED of electric ballast, the negative electrode of capacitor C is electrically connected with IC chip the 5th pin of the direct driving LED of electric ballast, one end of inductance L is electrically connected with IC chip second pin of the direct driving LED of electric ballast, the other end of inductance L is electrically connected with IC chip the 3rd pin of the direct driving LED of electric ballast, the first end of LED circuit is electrically connected with IC chip the 8th pin of the direct driving LED of electric ballast, the second end of LED circuit is electrically connected with the IC chip of the direct driving LED of electric ballast the 7th pin.Existing dual input four is exported being input as of ballast and is exchanged input, in four outputs, the first output is connected with ballast inductor with the 4th output, the second output is connected with power back-off electric capacity with the 3rd output, IC chip in the present invention plays rectification, no-load protection and constant current effect, peripheral control circuit, comprise the output power controlling circuit of electronic ballast output end, three kinds of circuit of constant current size control circuit of filter circuit after the rectification of IC chip and IC chip constant-current source, inductance L plays adjustment output current frequency as the output power controlling circuit of electronic ballast output end, change the frequency of original electric ballast output current by inductance L, thereby reach the effect of the power output of adjusting electronic ballast output end, resistance R T plays as the constant current size control circuit of IC chip constant-current source the effect of adjusting output constant current size, the filter circuit of capacitor C after as the rectification of IC chip carries out filter action, reach the effect of stabilized driving LED circuit by cooperatively interacting of above element.
As preferably, described inductance L is variable inductance, and described resistance R T is variable resistor.Arrange like this, user can adjust the electric current of output by adjusting inductance L and resistance R T, is applicable to various LED circuits.
Substantial effect of the present invention is: the present invention consumes less, generate heat less, element simply, easily integrated; bidirectional thyristor Q1 is operated in half conducting state, plays the effect of no-load protection, has longer useful life; the present invention can, by user's free adjustment, can be applicable to various LED circuits.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of IC chip in the present invention;
Fig. 2 is circuit structure block diagram of the present invention.
In figure: 1, protective circuit, 2, rectification circuit, 3, no-load protective circuit, 4, constant-current source circuit, 5, IC chip.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1:
The IC chip (referring to accompanying drawing 1) of the direct driving LED of a kind of electric ballast; be eight pin package chips; comprise four input pins and four output pins; also comprise protective circuit 1, rectification circuit 2, no-load protective circuit 3 and constant-current source circuit 4; the input of protective circuit is connected with input pin, and the output of described protective circuit is connected with the input of rectification circuit.The input of rectification circuit 2 is connected with input pin by protective circuit 1, and the output of rectification circuit 2 is connected with the input of constant-current source circuit 4 by no-load protective circuit 3, and the output of described constant-current source circuit 4 is connected with output pin.
Described constant-current source circuit 4 comprises triode Q3, field effect transistor Q2 and resistance R 4, the negative electrode of diode D5 is connected with the collector electrode of triode Q3 by resistance R 4, the anodic bonding of the anode of the emitter of triode Q3 and diode D3 and diode D4, the base stage of triode Q3 is connected with substrate and the source electrode of field effect transistor Q2, the grid of field effect transistor Q2 is connected with the collector electrode of triode Q3, the drain electrode of field effect transistor Q2 leads to the 7th pin, the source electrode of field effect transistor Q2 leads to the 6th pin, and the emitter of triode Q3 is connected with the 5th pin.
The IC chip of the direct driving LED of the disclosed electric ballast of the present embodiment; applying this IC chip can be to high-frequency high-voltage circuit distort protection, rectification, pressure regulation, adjusting power; reach constant current output, the present embodiment volume is small and exquisite, particularly suitable be integrated in LED circuit for lamp.The protective circuit of the present embodiment is protected the high-frequency high-voltage circuit of the output of electric ballast, and the distortion while having prevented high-frequency current output damages part electronic component in IC chip.And the simplicity of design of resistance R 1, resistance R 2 is easily gone, can reach design original intention.Diode D1, diode D2, diode D3 and diode D4 composition rectification circuit, electric current is carried out to rectification, in the present invention, use triode Q3 and field effect transistor Q2 to form constant-current source, wherein the present embodiment adopts field effect transistor Q2 but not adopts triode, because, field effect transistor is voltage control device, if adopt in the present invention triode to replace field effect transistor Q2 to have more loss and higher caloric value, the consumption in operation can affect the very fast useful life of IC chip and the LED circuit of driving time.By the output current of electric ballast is carried out to rectification and constant current output, stable continuous current can be exported to LED circuit, the illumination of driving LED circuit.Diode D5, resistance R 3 and bidirectional thyristor Q1 composition no-load protective circuit; in the time that IC chip output is unloaded, bidirectional thyristor Q1 is operated in half conducting state, plays the effect of no-load protection; the setting of diode D5 has prevented directional current, has guaranteed the sense of current.
The control circuit (referring to accompanying drawing 2) of the direct driving LED of a kind of electric ballast, for driving LED circuit, comprise the IC chip 5 of the direct driving LED of a kind of electric ballast described in embodiment 1 and the electric ballast that dual input four is exported, the control circuit of the described direct driving LED of electric ballast also comprises inductance L, resistance R T and capacitor C, the first output of electric ballast is electrically connected with the IC chip of the direct driving LED of electric ballast 5 first pins, i.e. the anodic bonding with diode D1 by the resistance R 1 in IC chip 5; The second output of electric ballast is electrically connected with the IC chip of the direct driving LED of electric ballast 5 second pins, i.e. the anodic bonding of diode D1 directly and in IC chip 5; The 3rd output of electric ballast is electrically connected with IC chip 5 the 3rd pin of the direct driving LED of electric ballast, is directly connected with the negative electrode of the diode D4 in IC chip 5; The 4th output of electric ballast is electrically connected with IC chip 5 the 4th pin of the direct driving LED of electric ballast, is connected with the negative electrode of diode D4 by the resistance R 2 in IC chip 5; The first end of resistance R T is electrically connected with IC chip 5 the 6th pin of the direct driving LED of electric ballast, is connected with the base stage of triode Q3 in IC chip 5; The second end of resistance R T is electrically connected with the IC chip 5 of the direct driving LED of electric ballast the 5th pin, is connected with the emitter of triode Q3 in IC chip 5; The anode of capacitor C is electrically connected with IC chip 5 the 8th pin of the direct driving LED of electric ballast, is connected with the negative electrode of diode D5 in IC chip 5; The negative electrode of capacitor C is electrically connected with IC chip 5 the 5th pin of the direct driving LED of electric ballast, is connected with the emitter of triode Q3 in IC chip 5; One end of inductance L is electrically connected with IC chip 5 second pins of the direct driving LED of electric ballast, with IC chip 5 in the anodic bonding of diode D1; The other end of inductance L is electrically connected with IC chip 5 the 3rd pin of the direct driving LED of electric ballast, with IC chip 5 in the anodic bonding of diode D2; The first end of LED circuit is electrically connected with IC chip 5 the 8th pin of the direct driving LED of electric ballast, is connected with the negative electrode of diode D5 in IC chip 5; The second end of LED circuit is electrically connected with the IC chip of the direct driving LED of electric ballast the 7th pin, is connected with the drain electrode of the field effect transistor Q2 in IC chip 5.
Existing dual input four is exported being input as of ballast and is exchanged input, in four outputs, the first output is connected with ballast inductor with the 4th output, the second output is connected with power back-off electric capacity with the 3rd output, IC chip in the present embodiment plays rectification, no-load protection and constant current effect, peripheral control circuit, comprise the output power controlling circuit of electronic ballast output end, three kinds of circuit of constant current size control circuit of filter circuit after the rectification of IC chip and IC chip constant-current source, inductance L plays adjustment output current frequency as the output power controlling circuit of electronic ballast output end, change the frequency of original electric ballast output output current by inductance L, thereby reach the effect of the power output of adjusting electronic ballast output end, resistance R T plays as the constant current size control circuit of IC chip constant-current source the effect of adjusting output constant current size, the filter circuit of capacitor C after as the rectification of IC chip carries out filter action, reach the effect of stabilized driving LED circuit by cooperatively interacting of above element.
Embodiment 2:
The present embodiment is substantially the same manner as Example 1, and difference is, resistance R 3 resistance values in the present embodiment are 330K ohm, and the resistance value of described resistance R 4 is 2M ohm.Inductance L in the present embodiment is variable inductance, and described resistance R T is variable resistor.
In the present embodiment, user can adjust the electric current of output by adjusting inductance L and resistance R T, can be applicable to various LED circuit and export the drive current matching.
The various illuminating lamp technology power losss that the present embodiment can solve current existing electric ballast driving are large, the problem of short and air pollution of life-span etc., the present embodiment consumes less, generate heat less, element is simple, easily integrated, bidirectional thyristor Q1 is operated in half conducting state, play the effect of no-load protection, there is longer useful life, the present embodiment can pass through IC chip and peripheral circuit, by user's free adjustment power output size and constant current output size, can be applicable to various LED circuits, for existing various electric ballasts drive difform fluorescent lamp, as: straight lamp tube, annular lamp tube, H shape fluorescent tube, and metal halide lamp, high, low-pressure sodium lamp is directly replaced the condition that brings convenience.
Above-described embodiment is preferably scheme of one of the present invention, not the present invention is done to any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim records.
Claims (8)
1. the IC chip of the direct driving LED of electric ballast; comprise input pin and output pin; it is characterized in that: also comprise rectification circuit, no-load protective circuit and constant-current source circuit; the input of rectification circuit is connected with input pin; the output of rectification circuit is connected with the input of constant-current source circuit by no-load protective circuit, and the output of described constant-current source circuit is connected with output pin.
2. the IC chip of the direct driving LED of electric ballast according to claim 1; it is characterized in that: the IC chip of the described direct driving LED of electric ballast also comprises protective circuit; the input of protective circuit is connected with input pin, and the output of described protective circuit is connected with the input of rectification circuit.
3. the IC chip of the direct driving LED of electric ballast according to claim 2, it is characterized in that: the IC chip of the described direct driving LED of electric ballast is eight pin package chips, rectification circuit comprises diode D1, diode D2, diode D3 and diode D4, no-load protective circuit comprises diode D5, bidirectional thyristor Q1 and resistance R 3, the anode of diode D1 is connected with the negative electrode of diode D3, the anodic bonding of the anode of diode D3 and diode D4, the anodic bonding of the negative electrode of diode D4 and diode D2, the negative electrode of diode D2 is connected with the negative electrode of diode D1, the anode of diode D5 is connected with the negative electrode of diode D2 and the negative electrode of diode D1, the first anode of bidirectional thyristor Q1 is connected with the negative electrode of diode D2 and the negative electrode of diode D1, the anodic bonding of the anode of the second plate of bidirectional thyristor Q1 and diode D3 and diode D4, the control utmost point of bidirectional thyristor Q1 is connected with the negative electrode of diode D5 by resistance R 3, the anode of diode D1 leads to the first and second pins, the negative electrode of diode D4 leads to the 3rd pin and the 4th pin, the second plate of bidirectional thyristor Q1 leads to the 5th pin, the negative electrode of diode D5 leads to the 8th pin, the negative electrode of diode D5 is also connected with constant-current source circuit, constant-current source circuit is connected with the 6th pin and the 7th pin.
4. the IC chip of the direct driving LED of electric ballast according to claim 3, it is characterized in that: described constant-current source circuit comprises triode Q3, field effect transistor Q2 and resistance R 4, the negative electrode of diode D5 is connected with the collector electrode of triode Q3 by resistance R 4, the anodic bonding of the anode of the emitter of triode Q3 and diode D3 and diode D4, the base stage of triode Q3 is connected with substrate and the source electrode of field effect transistor Q2, the grid of field effect transistor Q2 is connected with the collector electrode of triode Q3, the drain electrode of field effect transistor Q2 leads to the 7th pin, the source electrode of field effect transistor Q2 leads to the 6th pin, the emitter of triode Q3 is connected with the 5th pin.
5. the IC chip of the direct driving LED of electric ballast according to claim 4; it is characterized in that: described protective circuit comprises resistance R 1 and resistance R 2; one end of resistance R 1 is connected with the first pin; the other end of resistance R 1 is connected with the second pin; one end of resistance R 2 is connected with the 3rd pin, and the other end of resistance R 2 is connected with the 4th pin.
6. according to the IC chip of the direct driving LED of electric ballast described in claim 3 or 4 or 5 or 6, it is characterized in that: described resistance R 3 resistance value spans be 200K ohm to 330K ohm, the resistance value scope of described resistance R 4 is that 1.5M ohm is to 2M ohm.
7. the control circuit of the direct driving LED of electric ballast, for driving LED circuit, comprise the IC chip of the direct driving LED of any one electric ballast as described in right 3 to 6 and the electric ballast that dual input four is exported, it is characterized in that: the control circuit of the described direct driving LED of electric ballast also comprises inductance L, resistance R T and capacitor C, the first output of electric ballast is electrically connected with IC chip first pin of the direct driving LED of electric ballast, the second output of electric ballast is electrically connected with IC chip second pin of the direct driving LED of electric ballast, the 3rd output of electric ballast is electrically connected with IC chip the 3rd pin of the direct driving LED of electric ballast, the 4th output of electric ballast is electrically connected with IC chip the 4th pin of the direct driving LED of electric ballast, the first end of resistance R T is electrically connected with IC chip the 6th pin of the direct driving LED of electric ballast, the second end of resistance R T is electrically connected with the IC chip of the direct driving LED of electric ballast the 5th pin, the anode of capacitor C is electrically connected with IC chip the 8th pin of the direct driving LED of electric ballast, the negative electrode of capacitor C is electrically connected with IC chip the 5th pin of the direct driving LED of electric ballast, one end of inductance L is electrically connected with IC chip second pin of the direct driving LED of electric ballast, the other end of inductance L is electrically connected with IC chip the 3rd pin of the direct driving LED of electric ballast, the first end of LED circuit is electrically connected with IC chip the 8th pin of the direct driving LED of electric ballast, the second end of LED circuit is electrically connected with the IC chip of the direct driving LED of electric ballast the 7th pin.
8. the IC chip of the direct driving LED of electric ballast according to claim 7, is characterized in that: described inductance L is variable inductance, and described resistance R T is variable resistor.
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Cited By (5)
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| CN104540304A (en) * | 2015-01-16 | 2015-04-22 | 邓树兴 | Electronic replacement-type double-end straight-tube LED fluorescent lamp and safety protection circuit thereof |
| CN105025627A (en) * | 2015-07-27 | 2015-11-04 | 苏州智浦芯联电子科技有限公司 | LED (Light-Emitting Diode) driving circuit packaging structure packaged with rectifier bridge device and illuminating system |
| WO2016112538A1 (en) * | 2015-01-16 | 2016-07-21 | 邓树兴 | Electronic substitution-type double-end straight-tube led lamp and safety protection circuit thereof |
| CN106793338A (en) * | 2017-01-25 | 2017-05-31 | 浙江东元照明有限公司 | The LED drive circuit of compatible various ballasts |
| CN111615239A (en) * | 2020-06-09 | 2020-09-01 | 欧普照明股份有限公司 | Chip integrated module, control circuit and lighting device |
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| JP2011243331A (en) * | 2010-05-14 | 2011-12-01 | Fkk Co Ltd | Led power supply circuit |
| CN102647838A (en) * | 2012-04-26 | 2012-08-22 | 永康市普发科技有限公司 | Conversion module of electronic ballast-driven LED (light emitting diode) |
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| CN104540304A (en) * | 2015-01-16 | 2015-04-22 | 邓树兴 | Electronic replacement-type double-end straight-tube LED fluorescent lamp and safety protection circuit thereof |
| WO2016112538A1 (en) * | 2015-01-16 | 2016-07-21 | 邓树兴 | Electronic substitution-type double-end straight-tube led lamp and safety protection circuit thereof |
| CN105025627A (en) * | 2015-07-27 | 2015-11-04 | 苏州智浦芯联电子科技有限公司 | LED (Light-Emitting Diode) driving circuit packaging structure packaged with rectifier bridge device and illuminating system |
| CN106793338A (en) * | 2017-01-25 | 2017-05-31 | 浙江东元照明有限公司 | The LED drive circuit of compatible various ballasts |
| CN111615239A (en) * | 2020-06-09 | 2020-09-01 | 欧普照明股份有限公司 | Chip integrated module, control circuit and lighting device |
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Effective date of registration: 20200706 Address after: 311400 2nd floor, building 2, No. 10, Chunjian Township, Chunjian Township, Fuyang District, Hangzhou City, Zhejiang Province Patentee after: ZHEJIANG FUCHUN LIGHTING Co.,Ltd. Address before: 311400 No. 7 labour Road, Hangzhou, Zhejiang, Fuyang Patentee before: Luo Zhenghua |