CN106817806A - A kind of controllable silicon light modulation gamut is without stroboscopic circuit - Google Patents
A kind of controllable silicon light modulation gamut is without stroboscopic circuit Download PDFInfo
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- CN106817806A CN106817806A CN201710084153.2A CN201710084153A CN106817806A CN 106817806 A CN106817806 A CN 106817806A CN 201710084153 A CN201710084153 A CN 201710084153A CN 106817806 A CN106817806 A CN 106817806A
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 20
- 239000010703 silicon Substances 0.000 title claims abstract description 20
- 239000004065 semiconductor Substances 0.000 claims abstract description 46
- 230000008030 elimination Effects 0.000 claims abstract description 14
- 238000003379 elimination reaction Methods 0.000 claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 230000005611 electricity Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims 1
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- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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Abstract
A kind of controllable silicon light modulation gamut is without stroboscopic circuit, including light adjusting circuit and the elimination stroboscopic circuit that is connected on light adjusting circuit, and the elimination stroboscopic circuit includes a metal-oxide-semiconductor, and the metal-oxide-semiconductor is connected on the negative or positive electrode of light adjusting circuit output end；The present invention eliminates electrical combination using light adjusting circuit with stroboscopic, light adjusting circuit is provided with thyristor regulating optical chip, when metal-oxide-semiconductor is operated in constant current area, the voltage of its grid source electrode is constant, the electric current for then flowing through hourglass source electrode is invariable, so as to realize the total power section of High Power Factor without stroboscopic phenomenon, it is ensured that LED operation stabilization, prevent from damaging user because of LED stroboscopics.
Description
Technical field
The present invention relates to a kind of light adjusting circuit, more particularly to a kind of controllable silicon light modulation gamut is without stroboscopic circuit.
Background technology
LED (Light Emitting Diode, light emitting diode) is a kind of can to convert electrical energy into consolidating for visible ray
The semiconductor devices of state, electricity directly can be converted into light by it.LED due to energy-saving and environmental protection, can it is light-operated, practical,
The lot of advantages such as stability is high, the response time is short, long-life, various photographs are had been widely used in the today for advocating low-carbon (LC) life
Bright field.
LED chip typically works under d.c. current, it is necessary to city's alternating current to be converted into driving power supply the direct current of LED operation
Electricity, however, existing LED lamp is unreasonable due to circuit design, causes the supply voltage of light fixture within the cycle with sine wave
Form fluctuates back and forth in crest between trough, the existing picture of stroboscopic occurs, to the negative effect for visually producing of user.Stroboscopic depth
Degree is bigger, and negative effect is bigger, endangers more serious.
The content of the invention
Based on this, it is necessary to for deficiency of the prior art, there is provided a kind of controllable silicon light modulation gamut is without stroboscopic circuit.
A kind of controllable silicon light modulation gamut is without stroboscopic circuit, including light adjusting circuit and the elimination that is connected on light adjusting circuit are frequently
Lightning road, the elimination stroboscopic circuit includes a metal-oxide-semiconductor, and the drain electrode of the metal-oxide-semiconductor is connected to the positive pole of light adjusting circuit output end
Or on negative pole；
When the grid of metal-oxide-semiconductor is connected to the positive pole of light adjusting circuit output end, the elimination stroboscopic circuit include resistance RN1,
Electric capacity CN1, diode DN1, diode DN2, resistance RG1, metal-oxide-semiconductor QN1, the resistance RN1 connect with electric capacity CN1, and simultaneously
It is associated on the positive and negative electrode of light adjusting circuit output end；The diode DN1 is connected in parallel on RN1 after being connected with diode DN2, two poles
The A that the K poles of pipe DN1 are connected to diode DN2 extremely goes up, and the A poles of diode DN1 are connected with the positive pole of light adjusting circuit output end, institute
State metal-oxide-semiconductor to be connected on the positive pole of light adjusting circuit output end, the grid of metal-oxide-semiconductor is connected to electric capacity CN1 and resistance by resistance RG1
On connection circuit between RN1, the cathode output end that the source electrode of metal-oxide-semiconductor is powered as LED；
When metal-oxide-semiconductor is connected to the negative pole of light adjusting circuit output end, eliminating stroboscopic circuit includes resistance RN1, electric capacity CN1, two
Pole pipe DN1, diode DN2, resistance RN2, metal-oxide-semiconductor QN1, the source electrode of the metal-oxide-semiconductor are connected to light adjusting circuit by resistance RN2
On the negative pole of output end, the grid of the metal-oxide-semiconductor is connected on the negative pole of the output end of light adjusting circuit by electric capacity CN1, resistance
The two ends of RN1 are connected in the grid of metal-oxide-semiconductor and drain electrode, and the diode DN1 is connected in parallel on electricity after being connected with diode DN2
On resistance RN1, diode DN1 and diode DN2 is in oppositely arranged, and the K poles of diode DN1 are connected with the K poles of diode DN2, MOS
The drain electrode of pipe as LED cathode output end.
Further, the stroboscopic circuit that eliminates also includes the LC in parallel electricity in parallel being made up of resistance R15 and electric capacity CC6
Road, the output end of light adjusting circuit is connected in parallel on resistance R15 and electric capacity CC6.
Further, the time constant of described RN1, CN1 is arranged in the voltage range not less than 10MS.
Further, the light adjusting circuit includes EMI filter rectifiers, RC absorbing circuits, pwm control circuit, DC TO
DC converter circuits, output rectifier and filter, the EMI filter rectifiers, RC absorbing circuits, DC TO DC converters electricity
Road, output rectifier and filter are sequentially connected in series, and the pwm control circuit is connected to EMI filter rectifiers and DC
TO DC converter circuits.
Further, light adjusting circuit also includes that a dim signal detects circuit, and the pwm control circuit filters whole with EMI
Detect that circuit is attached by dim signal between current circuit,
Further, the EMI filter rectifiers are provided with thyristor regulating optical chip.
The beneficial effects of the present invention are：Electrical combination is eliminated using light adjusting circuit and stroboscopic, light adjusting circuit is provided with can
Control silicon light modulation chip, when constant current area is operated on metal-oxide-semiconductor, the voltage of its grid source electrode is constant, then the electric current for flowing through hourglass source electrode is permanent
It is fixed constant, so as to realize the total power section of High Power Factor without stroboscopic phenomenon, it is ensured that LED operation stabilization, prevent because of LED stroboscopics pair
User's eyes are damaged.
Brief description of the drawings
Fig. 1 is circuit diagram of the controllable silicon light modulation gamut without stroboscopic circuit first embodiment of the present invention.
Fig. 2 is circuit diagram of the controllable silicon light modulation gamut without stroboscopic circuit second embodiment of the present invention.
Specific embodiment
In order that the object, technical solution and advantage of invention become more apparent, below in conjunction with drawings and Examples, to hair
It is bright to be further elaborated.It should be appreciated that specific embodiment described herein is only used to explain invention, limit is not used to
Fixed invention.
As shown in figure 1, it is the first embodiment of invention, the present embodiment provides a kind of controllable silicon light modulation gamut without stroboscopic
Circuit, the controllable silicon light modulation gamut includes light adjusting circuit and the elimination stroboscopic circuit being connected on light adjusting circuit without stroboscopic circuit
70, the light adjusting circuit is filtered for accessing circuit to LED, rectification, and the elimination stroboscopic circuit 70 is defeated to light adjusting circuit
The electric signal for going out carries out eliminating stroboscopic treatment.
The light adjusting circuit includes EMI filter rectifiers 10, RC absorbing circuits 20, pwm control circuit 50, DC TO DC
Converter circuit 30, output rectifier and filter 40, the EMI filter rectifiers 10, RC absorbing circuits 20, DC TO DC become
Converter circuit 30, output rectifier and filter 40 are sequentially connected in series, and EMI filter rectifiers 10 are provided with controllable silicon light modulation core
Piece IW3688, the pwm control circuit 50 is connected to EMI filter rectifiers 10 and DC TO DC converter circuits 30
On, light adjusting circuit also includes that a dim signal detects circuit 60, and the pwm control circuit 50 detects circuit 60 by dim signal
It is attached between EMI filter rectifiers 10, the pwm control circuit 50 realizes the work(to EMI filter rectifiers 10
Rate factor is corrected, and by adjusting the size of d. c. voltage signal, changes the current peak size connected in the circuit, from
And realize LED and dimmed.
The elimination stroboscopic circuit 70 includes resistance RN1, electric capacity CN1, diode DN1, diode DN2, resistance RG1, MOS
Pipe QN1, the resistance RN1 connects with electric capacity CN1, and is connected in parallel on the positive and negative electrode of light adjusting circuit output end；The diode
DN1 is connected in parallel on resistance RN1 after being connected with diode DN2, wherein, the A that the K poles of diode DN1 are connected to DN2 extremely goes up, two poles
The A poles of pipe DN1 are connected with the positive pole of light adjusting circuit output end, and the metal-oxide-semiconductor is connected on the positive pole of light adjusting circuit output end,
On the connection circuit that the grid of metal-oxide-semiconductor is connected between electric capacity CN1 and resistance RN1 by resistance RG1, the source electrode conduct of metal-oxide-semiconductor
The cathode output end that LED powers；It is preferred that the stroboscopic circuit 70 that eliminates also includes the parallel connection that resistance R15 and electric capacity CC6 is constituted
LC parallel circuits, the output end of light adjusting circuit is connected in parallel on resistance R15 and electric capacity CC6.
Operation principle of the controllable silicon light modulation gamut without stroboscopic circuit of the present invention is as follows：
1st, CN1RN1 constitutes a few minutes filter circuit in circuit, eliminates working frequency ripple wave, and DN1DN2 plays quick charge effect, together
When prevent electric capacity CN1 discharge damage QN1.
2nd, control metal-oxide-semiconductor QN1 works in constant current area, and controls the gate-source voltage of metal-oxide-semiconductor QN1 constant, makes to flow through metal-oxide-semiconductor
The leakage of QN1, the constant current hold of source electrode.
3rd, in order that filter circuit can eliminate the AC compounent comprising 100HZ or so in LED drive circuit output voltage,
The time constant of RN1, CN1 is arranged in the voltage range not less than 10MS, wherein time constant is RN1*CN1, so as to filter
The low-limit frequency that wave circuit can remove AC ripple is 10HZ.
4th, the cut-in voltage VTH of metal-oxide-semiconductor QN1 is constant, when it is in constant current area, if the voltage of its grid source electrode is constant,
Then flow through leakage, source electrode electric current IDS it is invariable, because metal-oxide-semiconductor has above-mentioned characteristic, therefore need to only control metal-oxide-semiconductor QN1 in perseverance
Stream area, and VGS is invariable, then QN1 has constant-current characteristics so that AC compounent is free of in LED load electric current, so as to without frequency
Dodge.
As shown in Fig. 2 it is the second implementation of the invention, the present embodiment is substantially similar with embodiment one, same to include adjusting
Optical circuit and elimination stroboscopic circuit 70, it is differred primarily in that：The metal-oxide-semiconductor of embodiment one is connected on positive pole, and the present embodiment
In, the metal-oxide-semiconductor is connected on negative pole, specifically, the elimination stroboscopic circuit 70 of the present embodiment include resistance RN1, electric capacity CN1,
Diode DN1, diode DN2, resistance RN2, metal-oxide-semiconductor QN1；
The source electrode of the metal-oxide-semiconductor is connected on the negative pole of the output end of light adjusting circuit by resistance RN2, the metal-oxide-semiconductor
Grid is connected on the negative pole of the output end of light adjusting circuit by electric capacity CN1, and the two ends of resistance RN1 are connected to metal-oxide-semiconductor
On grid and drain electrode, the diode DN1 is connected in parallel on RN1 after being connected with diode DN2, and diode DN1 and diode DN2 are in
Oppositely arranged, the K poles of diode DN1 are connected with the K poles of diode DN2, the drain electrode of metal-oxide-semiconductor as LED cathode output end.Compared with
Goodly, the stroboscopic circuit 70 that eliminates also includes the LC parallel circuits in parallel that resistance R15 and electric capacity CC6 is constituted, light adjusting circuit
Output end is connected in parallel on resistance R15 and electric capacity CC6.
The beneficial effects of the present invention are：Electrical combination is eliminated using light adjusting circuit and stroboscopic, light adjusting circuit is provided with can
Control silicon light modulation chip, when the grid on metal-oxide-semiconductor is in constant current area, the voltage of its grid source electrode is constant, then flow through the electricity of leakage, source electrode
Stream is invariable, so as to realize the total power section of High Power Factor without stroboscopic phenomenon, it is ensured that LED operation stabilization, prevents because of LED frequently
Sudden strain of a muscle is damaged to user's eyes.
Embodiment described above only expresses the several embodiments of invention, and its description is more specific and detailed, but not
Can therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art,
On the premise of inventive concept is not departed from, various modifications and improvements can be made, these belong to the protection domain of invention.Cause
This, the protection domain of patent of invention should be determined by the appended claims.
Claims (6)
1. a kind of controllable silicon light modulation gamut is without stroboscopic circuit, it is characterised in that including light adjusting circuit and be connected to light adjusting circuit
On elimination stroboscopic circuit, the elimination stroboscopic circuit includes a metal-oxide-semiconductor, and it is defeated that the drain electrode of the metal-oxide-semiconductor is connected to light adjusting circuit
Go out on the negative or positive electrode at end；
When the grid of metal-oxide-semiconductor is connected to the positive pole of light adjusting circuit output end, the elimination stroboscopic circuit includes resistance RN1, electric capacity
CN1, diode DN1, diode DN2, resistance RG1, metal-oxide-semiconductor QN1, the resistance RN1 connects with electric capacity CN1, and is connected in parallel on
On the positive and negative electrode of light adjusting circuit output end；The diode DN1 is connected in parallel on RN1 after being connected with diode DN2, diode DN1
K poles be connected to the A of diode DN2 and extremely go up, the A poles of diode DN1 are connected with the positive pole of light adjusting circuit output end, the MOS
Pipe is connected on the positive pole of light adjusting circuit output end, the grid of metal-oxide-semiconductor by resistance RG1 be connected to electric capacity CN1 and resistance RN1 it
Between connection circuit on, the cathode output end that the source electrode of metal-oxide-semiconductor is powered as LED；
When metal-oxide-semiconductor is connected to the negative pole of light adjusting circuit output end, eliminating stroboscopic circuit includes resistance RN1, electric capacity CN1, diode
DN1, diode DN2, resistance RN2, metal-oxide-semiconductor QN1, the source electrode of the metal-oxide-semiconductor are connected to the output of light adjusting circuit by resistance RN2
On the negative pole at end, the grid of the metal-oxide-semiconductor is connected on the negative pole of the output end of light adjusting circuit by electric capacity CN1, resistance RN1's
Two ends are connected in the grid of metal-oxide-semiconductor and drain electrode, and the diode DN1 is connected in parallel on resistance RN1 after being connected with diode DN2
On, diode DN1 and diode DN2 is in oppositely arranged, and the K poles of diode DN1 are connected with the K poles of diode DN2, metal-oxide-semiconductor
The cathode output end drained as LED.
2. a kind of controllable silicon light modulation gamut as claimed in claim 1 is without stroboscopic circuit, it is characterised in that：The elimination stroboscopic
Circuit also includes the LC parallel circuits in parallel being made up of resistance R15 and electric capacity CC6, and the output end of light adjusting circuit is connected in parallel on resistance
On R15 and electric capacity CC6.
3. a kind of controllable silicon light modulation gamut as claimed in claim 1 is without stroboscopic circuit, it is characterised in that：Described RN1, CN1
Time constant be arranged in the voltage range not less than 10MS.
4. a kind of controllable silicon light modulation gamut as claimed in claim 1 is without stroboscopic circuit, it is characterised in that：The light adjusting circuit
Including EMI filter rectifiers, RC absorbing circuits, pwm control circuit, DC TO DC converter circuits, output rectification filter electricity
Road, the EMI filter rectifiers, RC absorbing circuits, DC TODC converter circuits, output rectifier and filter are sequentially connected in series
Connection, the pwm control circuit is connected to EMI filter rectifiers and DC TO DC converter circuits.
5. a kind of controllable silicon light modulation gamut as claimed in claim 4 is without stroboscopic circuit, it is characterised in that：Light adjusting circuit is also wrapped
Dim signal detection circuit is included, circuit is detected by dim signal between the pwm control circuit and EMI filter rectifiers
It is attached.
6. a kind of controllable silicon light modulation gamut as claimed in claim 4 is without stroboscopic circuit, it is characterised in that：The EMI filtering
Rectification circuit is provided with thyristor regulating optical chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084153.2A CN106817806B (en) | 2017-02-16 | 2017-02-16 | Silicon controlled rectifier full-range non-stroboscopic circuit of adjusting luminance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084153.2A CN106817806B (en) | 2017-02-16 | 2017-02-16 | Silicon controlled rectifier full-range non-stroboscopic circuit of adjusting luminance |
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| Publication Number | Publication Date |
|---|---|
| CN106817806A true CN106817806A (en) | 2017-06-09 |
| CN106817806B CN106817806B (en) | 2018-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710084153.2A Active CN106817806B (en) | 2017-02-16 | 2017-02-16 | Silicon controlled rectifier full-range non-stroboscopic circuit of adjusting luminance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831849A (en) * | 2019-03-04 | 2019-05-31 | 深圳民爆光电技术有限公司 | A kind of light modulation toning of analog signal is without stroboscopic LED drive circuit |
| CN113329543A (en) * | 2021-06-08 | 2021-08-31 | 宁波凯耀电器制造有限公司 | Dimming circuit capable of stabilizing output voltage |
-
2017
- 2017-02-16 CN CN201710084153.2A patent/CN106817806B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831849A (en) * | 2019-03-04 | 2019-05-31 | 深圳民爆光电技术有限公司 | A kind of light modulation toning of analog signal is without stroboscopic LED drive circuit |
| CN109831849B (en) * | 2019-03-04 | 2024-01-09 | 深圳民爆光电股份有限公司 | Analog signal dimming and toning stroboflash-free LED driving circuit |
| CN113329543A (en) * | 2021-06-08 | 2021-08-31 | 宁波凯耀电器制造有限公司 | Dimming circuit capable of stabilizing output voltage |
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| Publication number | Publication date |
|---|---|
| CN106817806B (en) | 2018-08-31 |
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