CN205754952U - The adjustable syllogic LED control circuit of a kind of output - Google Patents
The adjustable syllogic LED control circuit of a kind of output Download PDFInfo
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- CN205754952U CN205754952U CN201620453001.6U CN201620453001U CN205754952U CN 205754952 U CN205754952 U CN 205754952U CN 201620453001 U CN201620453001 U CN 201620453001U CN 205754952 U CN205754952 U CN 205754952U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses the adjustable syllogic LED control circuit of a kind of output, including three sections of selected on-off circuits, a road current rectifying and wave filtering circuit, two alignment detection circuits, a road constant-current control circuit and one group of LED, alternating current connects current rectifying and wave filtering circuit through three sections of selected on-off circuits, after current rectifying and wave filtering circuit carries out AC-DC conversion, constant-current control circuit is arrived in output, constant-current control circuit exports powers to LED, three sections of selected on-off circuit output termination two-way testing circuits, testing circuit output connects constant-current control circuit.It has the advantage that and realizes Width funtion input, and three sections of output current ratio can arbitrarily regulate, and simplifies circuit, reduce cost, reduce size of power, optimize performance, experience is better, can be widely used in the primary control constant-current circuit of insulating power supply and non-isolated power supply.
Description
Technical field
This utility model relates to LED control circuit, particularly relates to the adjustable syllogic LED of a kind of output and controls
Circuit.
Background technology
Tradition three-stage dimming electric filament lamp structure, has used two segment filaments, low wattage lamp silk and middle wattage filament, one
Common segment, three input lines, utilize mechanical switch, different power-up sequence to realize different combinations, thus reach
To the function of three kinds of luminous fluxes, explain and see accompanying drawing 1 wiring diagram.LED to substitute this kind of electric filament lamp, such as Fig. 2
Shown in, often circuit is complicated, and cost is high, takies lamp body space big, is unfavorable for assembling and heat radiation.Prior art
In, such as the publication of Application No. 20131028310: a kind of three-stage dimming LED control circuit, although
Its circuit structure is greatly simplified, and sees Fig. 3, but its input voltage is difficult to obtain Width funtion input, three sections of outputs
Current ratio is difficult to make the most adjustable, greatly reduces its ease of use.
Utility model content
This utility model provides the adjustable syllogic LED control circuit of a kind of output, which overcomes background technology
Described in the deficiencies in the prior art.
This utility model solves its technical problem and be the technical scheme is that
The adjustable syllogic LED control circuit of a kind of output, including three sections of selected on-off circuits, a road rectification filter
Wave circuit, two alignment detection circuits, a road constant-current control circuit and one group of LED, alternating current is through three sections of selections
On-off circuit connects current rectifying and wave filtering circuit, and after current rectifying and wave filtering circuit carries out AC-DC conversion, constant-current control circuit is arrived in output,
Constant-current control circuit exports powers to LED, three sections of selected on-off circuit output termination two-way testing circuits, inspection
Slowdown monitoring circuit output connects constant-current control circuit；
Described constant-current control circuit includes constant current chip, main metal-oxide-semiconductor, the first resistance and the second resistance, main MOS
The drain electrode of pipe connects the outfan of current rectifying and wave filtering circuit, and grid connects the outfan of constant current chip, and source electrode is through connecting
The control end that LED is powered and connected constant current chip through the second resistance is connected after first resistance；
Described testing circuit includes at least two divider resistances, at least one metal-oxide-semiconductor and at least two feedback resistances, described
Three sections of selected on-off circuit output two-way alternating currents, each road alternating current, through corresponding divider resistance ground connection, divides
Piezoresistance powers on force feed to a metal-oxide-semiconductor grid of testing circuit, corresponding metal-oxide-semiconductor on or off so that right
The feedback resistance answered accesses the control end of constant current chip.
Among one embodiment: described testing circuit includes the first divider resistance, the second divider resistance, a MOS
Pipe, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, the first feedback resistance and the second feedback resistance；
Described first divider resistance connects first via alternating current, and the second divider resistance connects the second road alternating current；
The grid of the first metal-oxide-semiconductor connects the dividing potential drop end of the first divider resistance, and drain electrode connects the grid of the 4th metal-oxide-semiconductor
And the first reference voltage, source ground can be connected；
The grid of the second metal-oxide-semiconductor connects the dividing potential drop end of the second divider resistance, and drain electrode connects the grid of the 3rd metal-oxide-semiconductor
And the first reference voltage, source ground can be connected；
The drain electrode of the 3rd metal-oxide-semiconductor connects the second reference voltage after connecting the first feedback resistance, and source electrode connects constant current
The control end of chip；
The drain electrode of the 4th metal-oxide-semiconductor connects the second reference voltage after connecting the second feedback resistance, and source electrode connects constant current
The control end of chip；
Among one embodiment: described three sections of selected on-off circuits output two-way alternating current, first paragraph and second segment divide
Not exporting for a corresponding wherein road alternating current of connecting, the 3rd section is corresponding connection two-way alternating current output.
Among one embodiment: described constant current chip for having fixing ON time, input current can follow input electricity
Press envelope and the constant current chip of PFC function can be realized.
The technical program is compared with background technology, and it has the advantage that
1, three-stage dimming of the present utility model output current ratio can arbitrarily regulate.
2, simplify circuit, reduce cost, reduce size of power, optimize performance, the experience effect of use
More preferably, can be widely used in the primary control constant-current circuit of insulating power supply and non-isolated power supply.
3, this utility model exports adjustable syllogic LED control circuit, uses input to detect for exchange, single
Chip controls mode, only realizes Width funtion input with a set of main circuit, and quick LED lights output, design
The main metal-oxide-semiconductor of Shi Xuanyong high pressure drives IC work, selects and just can touch when reaching more than 50V with high drive module
Send out the constant current chip of constant current chip work, i.e. can guarantee that Width funtion inputs.
Accompanying drawing explanation
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the wiring diagram of old-fashioned three-stage dimming electric filament lamp；
Fig. 2 is the circuit diagram that old-fashioned three-stage dimming LED two-way power supply realizes controlling；
Fig. 3 is a kind of three-stage dimming LED control circuit figure of the prior art.
Fig. 4 is that the one described in the present embodiment exports adjustable syllogic LED control circuit figure.
Detailed description of the invention
Such as the wiring diagram that Fig. 1 is tradition three-stage dimming electric filament lamp, Fig. 2 is old-fashioned three-stage dimming LED two-way
Power supply realizes the circuit diagram controlled, and two-way constant-current control circuit controls two paths of LED lamp, principle and conventional incandescent
Equally, by the selected required luminous flux of switch, two segment filament two-way constant-current control circuits originally add two paths of LED
Lamp substitutes, and Fig. 3 is a kind of three-stage dimming LED control circuit figure of the prior art, and its circuit structure is the biggest
Amount simplifies, but the three of its LED sections of output current ratio cannot freely regulate, and it is the most convenient to use.
Refer to Fig. 4, one described in the utility model exports adjustable syllogic LED control circuit, including
Three sections of selected on-off circuit 10, road current rectifying and wave filtering circuits 20, two alignment detection circuit 30, road current constant control
Circuit 40 and one group of LED 50, alternating current connects current rectifying and wave filtering circuit 20 through three sections of selected on-off circuits 10,
After current rectifying and wave filtering circuit 20 carries out AC-DC conversion, constant-current control circuit 40 is arrived in output, and constant-current control circuit 40 is defeated
Go out and power to LED 50, three sections of selected on-off circuit 10 output termination two-way testing circuits 30, testing circuit
30 outputs connect constant-current control circuit 40；
Constant-current control circuit 40 includes constant current chip 41, main metal-oxide-semiconductor the 42, first resistance 43 and the second resistance
44, the drain electrode of main metal-oxide-semiconductor 42 connects the outfan of current rectifying and wave filtering circuit 20, and grid connects constant current chip 41
Outfan, source electrode connects LED 50 after connecting the first resistance 43 and powers and connect perseverance through the second resistance 44
The control end of stream chip 41；In the present embodiment, described constant current chip is for having fixing ON time, input current
Can follow input voltage envelope and can realize the constant current chip of PFC function, such as conventional model is OZ8022
Constant current chip.
Testing circuit 30 includes at least two divider resistances, at least one metal-oxide-semiconductor and at least two feedback resistances, described three
Section selected on-off circuit 10 exports two-way alternating current, and each road alternating current, through corresponding divider resistance ground connection, divides
Piezoresistance powers on force feed to a metal-oxide-semiconductor grid of testing circuit, corresponding metal-oxide-semiconductor on or off so that right
The feedback resistance answered accesses the control end of constant current chip 41.
Wherein, three sections of selected on-off circuits 10 export two-way alternating current, first paragraph and second segment respectively correspondence and connect
A logical wherein road alternating current output, the 3rd section is that corresponding two-way alternating current of connecting exports.
In the present embodiment, testing circuit 30 includes first divider resistance the 31, second divider resistance the 32, the oneth MOS
Pipe the 33, second metal-oxide-semiconductor the 34, the 3rd metal-oxide-semiconductor the 35, the 4th metal-oxide-semiconductor the 36, first feedback resistance 37 and second
Feedback resistance 38；First divider resistance 31 connects first via alternating current, and the second divider resistance 32 connects the second tunnel
Alternating current；The grid of the first metal-oxide-semiconductor 33 connects the dividing potential drop end of the first divider resistance 31, and drain electrode connects the 4th MOS
The grid of pipe 36 also can connect the first reference voltage, source ground；The grid of the second metal-oxide-semiconductor 34 connects the
The dividing potential drop end of two divider resistances 32, drain electrode connects the grid of the 3rd metal-oxide-semiconductor 35 and can connect the first benchmark electricity
Pressure, source ground；The drain electrode of the 3rd metal-oxide-semiconductor 35 connects the second benchmark electricity after connecting the first feedback resistance 37
Pressure, source electrode connects the control end of constant current chip 41；The drain electrode of the 4th metal-oxide-semiconductor 36 is through connecting the second feedback resistance
Connecting the second reference voltage after 38, source electrode connects the control end of constant current chip 41；
Exporting adjustable syllogic LED control circuit figure as shown in Figure 4, circuit front-end, for selecting switch, works as S1
When switching on power with N two ends, diode D7 that the voltage of power end is concatenated and resistance R15, the first dividing potential drop electricity
The dividing potential drop of resistance R16, controls the first metal-oxide-semiconductor Q4 conducting, so that the 4th metal-oxide-semiconductor Q5 moves ground to and turns off.
Main circuit sent into by the rectified filter circuit of power supply simultaneously, and the first reference voltage V DD makes the 3rd metal-oxide-semiconductor Q3 conducting,
The control of constant current chip is regulated by the value of the first reference voltage and the first feedback resistance R14 and the second resistance R9
The sampled value of end CS foot, thus control to export electric current.This LED works with the constant current of I1=UCS1 ÷ R5,
In the present embodiment, the first reference voltage V ad takes 2.5V, so UCS1 approximates Vad*R9/ (R9+R14), this
For first paragraph brightness.
When S2 and N two ends switch on power, diode D5 that the voltage of power end is concatenated and resistance R10,
The dividing potential drop of the second divider resistance R11, controls the second metal-oxide-semiconductor Q2 conducting, so that the 3rd metal-oxide-semiconductor Q3 moves to
Ground and turn off.Main circuit sent into by the rectified filter circuit of power supply simultaneously, and the first reference voltage V DD makes the 4th MOS
Pipe Q5 turns on, and regulates perseverance by the value of the first reference voltage and the second feedback resistance R20 and the second resistance R9
The sampled value of stream chip controls end CS foot, thus control to export electric current.This LED is with the perseverance of I 2=UCS2 ÷ R5
Determining current work, in the present embodiment, the first reference voltage V ad takes 2.5V, so UCS2 approximates
Vad*R9/ (R9+R20), this is second segment brightness.
As S1 and N, S1 and N, when being also turned on power supply, diode that the voltage of power end is concatenated and dividing potential drop
Electric resistance partial pressure, controls the first metal-oxide-semiconductor Q4, and the second metal-oxide-semiconductor Q2 turns on, so that the 3rd metal-oxide-semiconductor Q3, the
Four metal-oxide-semiconductor Q5 move ground to and turn off.Main circuit sent into by the rectified filter circuit of power supply simultaneously, and major loop turns on,
Control to export electric current by constant current chip internal reference voltage UCS.This LED is constant with I 0=UCS ÷ R5's
Current work, wherein UCS can be obtained by the inquiry of Chip scale book, and this is the 3rd section of brightness.
Knowable to foregoing circuit analysis, this utility model circuit uses the work of a set of main circuit, at exchange input side
Arranging two paths of signals testing circuit, two-way detection signal controls conducting and the disconnection of corresponding metal-oxide-semiconductor, thus
The control of constant current chip terminates into corresponding feedback resistance, by feedback resistance, the first resistance and the second resistance
Choose, change constant current chip and control the sampled value of end, thus control the service time of main metal-oxide-semiconductor, it is achieved LED
Any control of output electric current, and by arranging the different resistances of feedback resistance, the first resistance and the second resistance,
Can realize any regulation of LED tri-sections output current ratio, experience is better.Circuit can be used in non-every
Off-line road, it is also possible to be used for isolating circuit.
This utility model exports adjustable syllogic LED control circuit, uses input for exchange detection, single
Sheet control mode, realizes Width funtion input also by a set of main circuit, and quick LED lights output, if
Timing selects the main metal-oxide-semiconductor of high pressure to drive I C work, selects when reaching more than 50V with high drive module with regard to energy
Trigger the constant current chip of constant current chip work, i.e. can guarantee that Width funtion inputs.
The above, only this utility model preferred embodiment, therefore it is real to limit this utility model according to this
The scope executed, the equivalence change i.e. made according to this utility model the scope of the claims and description and modification, all should
Still belong in the range of this utility model contains.
Claims (4)
1. export an adjustable syllogic LED control circuit, including three sections of selected on-off circuits, a road rectification
Filter circuit, two alignment detection circuits, a road constant-current control circuit and one group of LED, alternating current is through three sections of choosings
Selecting on-off circuit and connect current rectifying and wave filtering circuit, after current rectifying and wave filtering circuit carries out AC-DC conversion, output is electric to current constant control
Road, constant-current control circuit exports powers to LED, three sections of selected on-off circuit output termination two-way testing circuits,
Testing circuit output connects constant-current control circuit, it is characterised in that:
Described constant-current control circuit includes constant current chip, main metal-oxide-semiconductor, the first resistance and the second resistance, main MOS
The drain electrode of pipe connects the outfan of current rectifying and wave filtering circuit, and grid connects the outfan of constant current chip, and source electrode is through connecting
The control end that LED is powered and connected constant current chip through the second resistance is connected after first resistance；
Described testing circuit includes at least two divider resistances, at least one metal-oxide-semiconductor and at least two feedback resistances, described
Three sections of selected on-off circuit output two-way alternating currents, each road alternating current, through corresponding divider resistance ground connection, divides
Piezoresistance powers on force feed to a metal-oxide-semiconductor grid of testing circuit, corresponding metal-oxide-semiconductor on or off so that right
The feedback resistance answered accesses the control end of constant current chip.
The adjustable syllogic LED control circuit of a kind of output the most according to claim 1, it is characterised in that:
Described testing circuit include the first divider resistance, the second divider resistance, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor,
Three metal-oxide-semiconductors, the 4th metal-oxide-semiconductor, the first feedback resistance and the second feedback resistance；
Described first divider resistance connects first via alternating current, and the second divider resistance connects the second road alternating current；
The grid of the first metal-oxide-semiconductor connects the dividing potential drop end of the first divider resistance, and drain electrode connects the grid of the 4th metal-oxide-semiconductor
And the first reference voltage, source ground can be connected；
The grid of the second metal-oxide-semiconductor connects the dividing potential drop end of the second divider resistance, and drain electrode connects the grid of the 3rd metal-oxide-semiconductor
And the first reference voltage, source ground can be connected；
The drain electrode of the 3rd metal-oxide-semiconductor connects the second reference voltage after connecting the first feedback resistance, and source electrode connects constant current
The control end of chip；
The drain electrode of the 4th metal-oxide-semiconductor connects the second reference voltage after connecting the second feedback resistance, and source electrode connects constant current
The control end of chip；
The adjustable syllogic LED control circuit of a kind of output the most according to claim 1, it is characterised in that:
Described three sections of selected on-off circuits output two-way alternating current, first paragraph and second segment are respectively correspondence and connect wherein one
Road alternating current output, the 3rd section is that corresponding two-way alternating current of connecting exports.
The adjustable syllogic LED control circuit of a kind of output the most according to claim 1 and 2, its feature
Be: described constant current chip for having fixing ON time, input current can follow input voltage envelope and energy
Realize the constant current chip of PFC function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620453001.6U CN205754952U (en) | 2016-05-18 | 2016-05-18 | The adjustable syllogic LED control circuit of a kind of output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620453001.6U CN205754952U (en) | 2016-05-18 | 2016-05-18 | The adjustable syllogic LED control circuit of a kind of output |
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| Publication Number | Publication Date |
|---|---|
| CN205754952U true CN205754952U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620453001.6U Expired - Fee Related CN205754952U (en) | 2016-05-18 | 2016-05-18 | The adjustable syllogic LED control circuit of a kind of output |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028500A (en) * | 2016-05-18 | 2016-10-12 | 厦门佰明光电股份有限公司 | Three-segment type LED lamp control circuit with adjustable output |
-
2016
- 2016-05-18 CN CN201620453001.6U patent/CN205754952U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028500A (en) * | 2016-05-18 | 2016-10-12 | 厦门佰明光电股份有限公司 | Three-segment type LED lamp control circuit with adjustable output |
| CN106028500B (en) * | 2016-05-18 | 2018-05-18 | 厦门佰明光电股份有限公司 | A kind of adjustable three-stage LED light control circuit of output |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20210518 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |