CN205883666U - LED phase cut power of adjusting luminance - Google Patents
LED phase cut power of adjusting luminance Download PDFInfo
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- CN205883666U CN205883666U CN201620874902.2U CN201620874902U CN205883666U CN 205883666 U CN205883666 U CN 205883666U CN 201620874902 U CN201620874902 U CN 201620874902U CN 205883666 U CN205883666 U CN 205883666U
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Abstract
The utility model provides a LED phase cut power of adjusting luminance, it includes alternating current power supply (1), phase cut light modulator (2), LED phase cut power of adjusting luminance (3), LED lamp or LED lamps and lanterns (4), LED phase cut power of adjusting luminance (3) are including anti -jamming circuit (301) that correspond the adapter coupling each other, rectifier circuit I (302), switching power supply circuit (303), rectifier circuit II (304), light modulator maintenance current circuit (305), step -down filter circuit (306), DC signal amplifier circuit (307), signaling conversion circuit (308), optoelectronic coupler (309), pulse signal amplifier circuit (310), MOS pipe (311), supply circuit VCC (312), supply circuit VDD (313), the input of anti -jamming circuit (301) is connected the output of phase cut light modulator (2), MOS pipe (311) or DC TO DC circuit connection LED lamp or LED lamps and lanterns (4). The utility model discloses but wide application in LED phase cut power of adjusting luminance field.
Description
Technical field
The present invention relates to LED applied technical field, especially relate to a kind of LED phase-cut dimming power supply.
Background technology
Along with development and the extensively application of LED illumination, LED phase-cut dimming has user installation wiring convenient and Old building
The most lay illuminating line to be transformed into and there is the advantages such as the LED illumination scheme of dimming function is simple and use more and more.So
And, what the power supply utilization of coupling LED phase-cut dimming was more at present is to change output by restriction power supply input power to reach
To dimming effect, bearing power is had certain limitations by this mode, and bearing power is less than light modulation during source nominal output 70%
Effect will be deteriorated, and there is the shortcomings such as narrow with phase-cut dimmer poor compatibility, dimming scope；Also part is had to use detection alternating current
Signal phase determines a pulse width and cycle, utilizes this pulse width and cycle to determine output lamplight brightness, this
Although mode solves bearing power restricted problem, but the leadage circuit that this mode typically uses resistance capacitance to form carries
The high compatibility with dimmer, but compatible or poor in practice, but also there is power attenuation, heating ratio
Bigger shortcoming, when it is dimmed by the dimmer using poor compatibility, the ac signal after copped wave is relatively more mixed and disorderly, again
Because its phase place of ac signal using the way of detection alternating current phases to detect is also the most mixed and disorderly, the pulse finally produced
The frequency of signal and pulsewidth are not parked in change and are easily caused light serious flicker.
There is bearing power restriction and phase-cut dimmer in other LED phase-cut dimming power supplys of the prior art in sum
Or the defect such as controllable silicon dimmer poor compatibility, heating is big, dimming scope appearance narrow, easy flashes, dimming effect difference.
Summary of the invention
To be solved by this invention ask that carrying is to overcome the deficiencies in the prior art, it is provided that provide one that bearing power is not limited
System and phase-cut dimmer or controllable silicon dimmer compatible strong, dimming scope width, good dimming effect and compatible before cut (forward position)
LED phase-cut dimming power supply with rear cut (tailing edge) phase-cut dimmer.
The technical scheme is that the present invention it include alternating current power supply, phase-cut dimmer, LED phase-cut dimming power supply,
LED or LED lamp, described alternating current power supply connects the input of described phase-cut dimmer, the outfan of described phase-cut dimmer
Connecting the input of described LED phase-cut dimming power supply, the outfan of described LED phase-cut dimming power supply connects described LED or LED
Light fixture, described LED phase-cut dimming power supply includes the anti-jamming circuit of the most corresponding adaptive connection, rectification circuit I, switch power supply
Road, rectification circuit II, dimmer maintain current circuit, blood pressure lowering filter circuit, direct current signal amplifying circuit, signaling conversion circuit,
Photoelectrical coupler, pulse signal amplification circuit, metal-oxide-semiconductor, power supply circuits VCC, power supply circuits VDD, described anti-jamming circuit defeated
Entering end and connect the outfan of described phase-cut dimmer, described metal-oxide-semiconductor connects described LED or LED lamp.
The outfan of described anti-jamming circuit connects described rectification circuit I, the input of rectification circuit II respectively, described whole
Current circuit I connects the input of described switching power circuit, and the outfan of described switching power circuit connects described metal-oxide-semiconductor respectively
Source electrode, power supply circuits VCC, power supply circuits VDD, the outfan of described rectification circuit II connect respectively described dimmer maintain electricity
Current circuit, blood pressure lowering filter circuit, described direct current signal amplifying circuit connects described blood pressure lowering filter circuit, signal conversion electricity respectively
Road, described signaling conversion circuit connects the input of described photoelectrical coupler, and the outfan of described photoelectrical coupler connects described
The input of pulse signal amplification circuit, the outfan of described pulse signal amplification circuit connects the grid of described metal-oxide-semiconductor.
The outfan of described pulse signal amplification circuit 310 can connect and control after the grid of described metal-oxide-semiconductor by described
The drain electrode of metal-oxide-semiconductor connects described LED or LED lamp, it is also possible to includes and connects and control after DCTODC circuit by described
DCTODC circuit output end connects described LED or LED lamp.
Circuit included in described LED phase-cut dimming power supply can all be placed in a housing, it is also possible to separately puts
In several housings.
The invention has the beneficial effects as follows: due to the present invention, it includes alternating current power supply, phase-cut dimmer, LED phase-cut dimming electricity
Source, LED or LED lamp, described alternating current power supply connects the input of described phase-cut dimmer, the output of described phase-cut dimmer
End connects the input of described LED phase-cut dimming power supply, the outfan of described LED phase-cut dimming power supply connect described LED or
LED lamp, described LED phase-cut dimming power supply includes the anti-jamming circuit of the most corresponding adaptive connection, rectification circuit I, switch electricity
Source circuit, rectification circuit II, dimmer maintain current circuit, blood pressure lowering filter circuit, direct current signal amplifying circuit, signal conversion electricity
Road, photoelectrical coupler, pulse signal amplification circuit, metal-oxide-semiconductor, power supply circuits VCC, power supply circuits VDD, described anti-jamming circuit
Input connects the outfan of described phase-cut dimmer, and described metal-oxide-semiconductor connects described LED or LED lamp.Described anti-interference electricity
The outfan on road connects described rectification circuit I, the input of rectification circuit II respectively, and described rectification circuit I connects described switch
The input of power circuit, the outfan of described switching power circuit connect respectively the source electrode of described metal-oxide-semiconductor, power supply circuits VCC,
Power supply circuits VDD, the outfan of described rectification circuit II connects described dimmer respectively and maintains current circuit, blood pressure lowering filtered electrical
Road, described direct current signal amplifying circuit connects described blood pressure lowering filter circuit, signaling conversion circuit, described signaling conversion circuit respectively
Connecting the input of described photoelectrical coupler, the outfan of described photoelectrical coupler connects the defeated of described pulse signal amplification circuit
Entering end, the outfan of described pulse signal amplification circuit can connect after the grid of described metal-oxide-semiconductor by the drain electrode of described metal-oxide-semiconductor even
Connect and control described LED or LED lamp, it is also possible to include and connect and control after DCTODC power circuit by described DCTODC
Power circuit output end connects described LED or LED lamp.Bearing power is not limited so the present invention is one and cuts
Phase dimmer or compatible strong, the LED phase-cut dimming power supply of dimming scope width, good dimming effect of controllable silicon dimmer.
Accompanying drawing explanation
Fig. 1 is the theory structure block diagram of the present invention；
Fig. 2 is the LED phase-cut dimming power circuit principle schematic diagram of the present invention；
Fig. 3 is waveform diagram of the present invention.
Detailed description of the invention
As shown in Figure 1 to Figure 3, the present invention it include alternating current power supply 1, phase-cut dimmer 2, LED phase-cut dimming power supply 3, LED
Lamp or LED lamp 4, described alternating current power supply 1 connects the input of described phase-cut dimmer 2, the outfan of described phase-cut dimmer 2
Connect the input of described LED phase-cut dimming power supply 3, the outfan of described LED phase-cut dimming power supply 3 connect described LED or
LED lamp 4, described LED phase-cut dimming power supply 3 includes the anti-jamming circuit 301 of the most corresponding adaptive connection, rectification circuit I
302, switching power circuit 303, rectification circuit II 304, dimmer maintain current circuit 305, blood pressure lowering filter circuit 306, direct current
Signal amplification circuit 307, signaling conversion circuit 308, photoelectrical coupler 309, pulse signal amplification circuit 310, metal-oxide-semiconductor 311, confession
Electricity circuit VCC312, power supply circuits VDD313, the input of described anti-jamming circuit 301 connects the defeated of described phase-cut dimmer 2
Going out end, described metal-oxide-semiconductor 311 connects described LED or LED lamp.
The outfan of described anti-jamming circuit 301 connects described rectification circuit I 302, the input of rectification circuit II 304 respectively
End, described rectification circuit I 302 connects the input of described switching power circuit 303, the output of described switching power circuit 303
End connects the source electrode of described metal-oxide-semiconductor 311, power supply circuits VCC312, power supply circuits VDD313, described rectification circuit II 304 respectively
Outfan connect respectively described dimmer maintain current circuit 305, blood pressure lowering filter circuit 306, described direct current signal amplify electricity
Road 307 connects described blood pressure lowering filter circuit 306, signaling conversion circuit 308 respectively, and described signaling conversion circuit 308 connects described
The input of photoelectrical coupler 309, the outfan of described photoelectrical coupler 309 connects described pulse signal amplification circuit 310
Input, the outfan of described pulse signal amplification circuit 310 connects the grid of described metal-oxide-semiconductor 311.
The outfan of described pulse signal amplification circuit 310 can connect and control after the grid of described metal-oxide-semiconductor 311 by institute
The drain electrode stating metal-oxide-semiconductor 311 connects described LED or LED lamp 4, it is also possible to include and connect and control after DCTODC circuit by
Described DCTODC circuit output end connects described LED or LED lamp 4.
Circuit included in described LED phase-cut dimming power supply can all be placed in a housing, it is also possible to separately puts
In several housings.
In the present embodiment, it is defeated that alternating current power supply 1 is input to described LED phase-cut dimming power supply 3 after phase-cut dimmer 2 copped wave
Enter end, after described anti-jamming circuit 301, then be input to described switching power circuit through a described rectification circuit I 302
303, the unidirectional current that described switching power circuit 303 changes out a constant voltage or constant current by energy is supplied by described metal-oxide-semiconductor 311
Giving mated LED or LED lamp 4, the alternating current after phase-cut dimmer 2 copped wave is again through described anti-interference electricity simultaneously
Also it is input to described dimmer through another described rectification circuit II 304 behind road 301 and maintains current circuit 305 and described blood pressure lowering
Filter circuit 306, described dimmer maintains current circuit 305 to provide a stable maintenance electric current to phase-cut dimmer 2, it is ensured that
Phase-cut dimmer 2 normally works, and improves described LED phase-cut dimming power supply 3 and the compatibility of phase-cut dimmer 2, and described blood pressure lowering is filtered
Wave circuit 306 by the alternating current of input by electric resistance partial pressure, jumbo electrochemical capacitor filtering be converted into one low level directly
The stream signal of telecommunication, the level of this DC signal is and the average voltage of the alternating current being input to described LED phase-cut dimming power supply 3
Or active voltage has direct relation, the average voltage or the active voltage that i.e. change alternating current just can change described blood pressure lowering filtered electrical
The voltage of the DC signal that road 306 is changed out, the degree of depth therefore cutting away alternating current by regulating phase-cut dimmer 2 change just may be used
To change the DC signal voltage that described blood pressure lowering filter circuit 306 produces；Owing to described blood pressure lowering filter circuit 306 is connected to institute
State direct current signal amplifying circuit 307, so this DC signal will enter into described direct current signal amplifying circuit 307, and produce
A raw DC signal amplified by a certain percentage, this is also described with being input to through the DC signal amplified certainly
The change of the alternating current of LED phase-cut dimming power supply 3 and change；Again because described direct current signal amplifying circuit 307 connects described
Signaling conversion circuit 308, so the DC signal through amplifying will enter into described signaling conversion circuit 308, described signal
Change-over circuit 308 generally comprises a signal comparator and a saw-tooth wave generating circuit, and described signaling conversion circuit 308 is by defeated
The sawtooth signal through the DC signal amplified and saw-tooth wave generating circuit output entered is separately input to signal comparator
On, by signal comparator two signals are compared and just can produce one and the pulse signal of sawtooth waveforms same frequency, this
Pulsewidth or the dutycycle of pulse signal are determined by the DC signal being input to described signaling conversion circuit, described signal conversion electricity
Chip microcontroller can also be used in road 308, and it processes through internal processes just can export one by gathering the level of DC signal
The individual pulse signal corresponding with DC signal level, and the pulsewidth of this pulse signal or dutycycle be also by being input to
The DC signal stating signaling conversion circuit 308 determines, the frequency of pulse signal can be produced by arranging saw-tooth wave generating circuit
Frequency or the single-chip microcomputer internal processes of raw sawtooth signal are arranged, and its frequency typically can be arranged on more than 200Hz, sometimes institute
State signaling conversion circuit 308 to have a negative circuit and will be input to next stage circuit again after anti-phase for pulse signal；Described letter
The pulse signal that number change-over circuit 308 produces is input to described photoelectrical coupler 309 again and passes the signal along to described pulse letter
Number amplifying circuit 310, pulse signal goes to control described LED phase-cut dimming after described pulse signal amplification circuit 310 amplifies
The on an off of the described metal-oxide-semiconductor 311 of power supply 3 outfan, thus realize adjusting LED or the brightness of LED lamp 4, wherein said
Switching frequency on metal-oxide-semiconductor 311 is identical with pulse signal frequency, it is also possible to utilize the pulse signal after amplifying to go control described
The duty of DCTODC power circuit, thus change the constant voltage of output or the galvanic level of constant current, also the most corresponding change
LED or the brightness of LED lamp 4.
In the present embodiment, again principle is described further in conjunction with oscillogram shown in Fig. 3, X-axis express time in figure, Y-axis
Represent voltage.The civil power 1 i.e. waveform of alternating current such as A, it will become shown waveform B after phase-cut dimmer 2 copped wave, the most defeated
Entering the described anti-jamming circuit 301 in described LED phase-cut dimming power supply 3, then a part is through described rectification circuit I 302
Being input to described switching power circuit 303 again and carry out energy conversion, another part is then input to after described rectification circuit II 304 it
Voltage waveform becomes shown waveform C, and then this waveform voltage is after described blood pressure lowering filter circuit 306 carries out blood pressure lowering and filters
Becoming the smooth DC signal of waveform D shown in figure, this DC signal is again through described direct current signal amplifying circuit
It is input to described signaling conversion circuit 308 after 307 amplifications, then with the sawtooth waveforms in described signaling conversion circuit 308, electricity occurs
The E sawtooth signal of waveform as shown in the figure that road occurs compares.As can be seen from the figure the sawtooth signal of waveform E and process
The DC signal of the waveform F amplified compares rear described signaling conversion circuit 308 by output one waveform G's as shown in the figure
Pulse signal, certainly in other use signaling conversion circuits of making of single-chip microcomputers, single-chip microcomputer amplified by collection after waveform F
DC signal through the pulse signal processing the waveform G that just can export corresponding pulsewidth of its internal processes, by Fig. 3 also
Can be seen that the level of the DC signal after amplification has determined that the pulse width of output pulse signal, general described signal turns
Change pulse signal that circuit 308 changes out also can after its internal negative circuit is anti-phase output to described photoelectrical coupler
309, described pulse signal amplification circuit 310 goes to control described metal-oxide-semiconductor 311 or described DCTODC power circuit, finally controls institute
State the output of LED phase-cut dimming power supply 3, realize controlling LED and the brightness of LED lamp 4.
The composite can be widely applied to LED phase-cut dimming field of power supplies.
Claims (4)
1. a LED phase-cut dimming power supply, it include alternating current power supply (1), phase-cut dimmer (2), LED phase-cut dimming power supply (3),
LED or LED lamp (4), it is characterised in that: described alternating current power supply (1) connects the input of described phase-cut dimmer (2), institute
The outfan stating phase-cut dimmer (2) connects the input of described LED phase-cut dimming power supply (3), described LED phase-cut dimming power supply
(3) outfan connects described LED or LED lamp (4), and described LED phase-cut dimming power supply (3) includes the most corresponding adaptation even
The anti-jamming circuit (301) that connects, rectification circuit I (302), switching power circuit (303), rectification circuit II (304), dimmer dimension
Hold current circuit (305), blood pressure lowering filter circuit (306), direct current signal amplifying circuit (307), signaling conversion circuit (308), light
Electric coupler (309), pulse signal amplification circuit (310), metal-oxide-semiconductor (311), power supply circuits VCC(312), power supply circuits VDD
(313), the input of described anti-jamming circuit (301) connects the outfan of described phase-cut dimmer (2), described metal-oxide-semiconductor (311)
Connect described LED or LED lamp (4).
A kind of LED phase-cut dimming power supply the most according to claim 1, it is characterised in that: described anti-jamming circuit (301)
Outfan connects described rectification circuit I (302), the input of rectification circuit II (304) respectively, and described rectification circuit I (302) is even
Connecing the input of described switching power circuit (303), the outfan of described switching power circuit (303) connects described MOS respectively
Pipe the source electrode of (311), power supply circuits VCC(312), power supply circuits VDD(313), the outfan of described rectification circuit II (304) divides
Do not connect described dimmer and maintain current circuit (305), blood pressure lowering filter circuit (306), described direct current signal amplifying circuit (307)
Connecting described blood pressure lowering filter circuit (306), signaling conversion circuit (308) respectively, described signaling conversion circuit (308) connects described
The input of photoelectrical coupler (309), the outfan of described photoelectrical coupler (309) connects described pulse signal amplification circuit
(310) input, the outfan of described pulse signal amplification circuit (310) connects the grid of described metal-oxide-semiconductor (311).
A kind of LED phase-cut dimming power supply the most according to claim 2, it is characterised in that: described pulse signal amplification circuit
(310) outfan is connected institute by the drain electrode of described metal-oxide-semiconductor (311) after can connecting and control the grid of described metal-oxide-semiconductor (311)
State LED or LED lamp (4), it is also possible to defeated by described DC TO DC circuit after including and connecting and control DC TO DC circuit
Go out end and connect described LED or LED lamp (4).
A kind of LED phase-cut dimming power supply the most according to claim 1 and 2, it is characterised in that: described LED phase-cut dimming
Circuit included in power supply can all be placed in a housing, it is also possible to is separately placed in several housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620874902.2U CN205883666U (en) | 2016-08-15 | 2016-08-15 | LED phase cut power of adjusting luminance |
| US15/247,936 US9591710B1 (en) | 2015-12-23 | 2016-08-26 | Kind of LED phase cut dimming power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620874902.2U CN205883666U (en) | 2016-08-15 | 2016-08-15 | LED phase cut power of adjusting luminance |
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| Publication Number | Publication Date |
|---|---|
| CN205883666U true CN205883666U (en) | 2017-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620874902.2U Active CN205883666U (en) | 2015-12-23 | 2016-08-15 | LED phase cut power of adjusting luminance |
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| CN (1) | CN205883666U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793351A (en) * | 2017-03-29 | 2017-05-31 | 珠海市圣昌电子有限公司 | A kind of wide input voltage phase-cut dimming power supply |
| CN106804079A (en) * | 2017-03-29 | 2017-06-06 | 珠海市圣昌电子有限公司 | Wide input voltage phase-cut dimming circuit |
| CN107087324A (en) * | 2017-01-19 | 2017-08-22 | 珠海市圣昌电子有限公司 | A kind of High Power Factor phase-cut dimming power supply |
| CN107770923A (en) * | 2017-10-25 | 2018-03-06 | 佛山市威得士灯饰电器有限公司 | The method of supplying power to of light fixture and its circuit unit and light fixture |
| CN108337764A (en) * | 2017-01-19 | 2018-07-27 | 鸿科电子实业有限公司 | Constant pressure exports AC phase Dimmable LED drivers |
| CN112584577A (en) * | 2020-12-25 | 2021-03-30 | 无锡安特源科技股份有限公司 | A hold current circuit for cutting looks light modulation power |
-
2016
- 2016-08-15 CN CN201620874902.2U patent/CN205883666U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107087324A (en) * | 2017-01-19 | 2017-08-22 | 珠海市圣昌电子有限公司 | A kind of High Power Factor phase-cut dimming power supply |
| CN108337764A (en) * | 2017-01-19 | 2018-07-27 | 鸿科电子实业有限公司 | Constant pressure exports AC phase Dimmable LED drivers |
| CN108337764B (en) * | 2017-01-19 | 2022-05-03 | 鸿科电子实业有限公司 | Constant voltage output AC phase dimmable LED driver |
| CN106793351A (en) * | 2017-03-29 | 2017-05-31 | 珠海市圣昌电子有限公司 | A kind of wide input voltage phase-cut dimming power supply |
| CN106804079A (en) * | 2017-03-29 | 2017-06-06 | 珠海市圣昌电子有限公司 | Wide input voltage phase-cut dimming circuit |
| CN107770923A (en) * | 2017-10-25 | 2018-03-06 | 佛山市威得士灯饰电器有限公司 | The method of supplying power to of light fixture and its circuit unit and light fixture |
| CN112584577A (en) * | 2020-12-25 | 2021-03-30 | 无锡安特源科技股份有限公司 | A hold current circuit for cutting looks light modulation power |
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