CN206932448U - Constant pressure exports the LED drive power of tunable optical - Google Patents
Constant pressure exports the LED drive power of tunable optical Download PDFInfo
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- CN206932448U CN206932448U CN201720887503.4U CN201720887503U CN206932448U CN 206932448 U CN206932448 U CN 206932448U CN 201720887503 U CN201720887503 U CN 201720887503U CN 206932448 U CN206932448 U CN 206932448U
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Abstract
It the utility model is related to the technology of the constant pressure out-put supply of adjustable output power.The purpose of this utility model is that the constant voltage source of driving LED load or module can be made to have 0 10V dimming functions, it is proposed that a kind of LED drive power of constant pressure output tunable optical, its technical scheme can be summarized as：Including AC DC change-over circuits, light modulation line and LED load, it is characterized in that, also turn pwm signal circuit and switching tube including 0 10V dim signals, the positive output end of the AC DC change-over circuits and the turning end of switching tube connect, the stationary contact connection end of switching tube is connected with the negative output terminal of AC DC change-over circuits, and the control terminal that light modulation line turns pwm signal circuit and switching tube by 0 10V dim signals connects.The beneficial effects of the utility model are that 0 10V dimming functions are supported in the LED drivings for exporting constant pressure, LED brilliance control are realized, suitable for the power supply or module of constant pressure output.
Description
Technical field
It the utility model is related to the technology of LED light regulating technologies, more particularly to the constant pressure out-put supply of adjustable output power.
Background technology
At present, the driving of in the market LED illumination is generally constant current or constant pressure output.With energy-saving and emission-reduction and intelligentized need
Will, many LED illumination products have dimming function, but the mostly LED drive power or module of current constant control.
Utility model content
The purpose of this utility model is to propose a kind of LED drive power of constant pressure output tunable optical, can make driving LED
The constant voltage source or module of load have 0-10V dimming functions.
The utility model solves its technical problem, and the technical scheme of use is：The LED driving electricity of constant pressure output tunable optical
Source, including AC-DC change-over circuits, light modulation line and LED load, it is characterised in that also turn pwm signal including 0-10V dim signals
Circuit and switching tube, the positive output end of the AC-DC change-over circuits and the turning end of switching tube connect, the stationary contact connection of switching tube
End is connected with the negative output terminal of AC-DC change-over circuits, and light modulation line turns pwm signal circuit and switching tube by 0-10V dim signals
Control terminal connection.
It is further that the light modulation line includes two, one is positive input light modulation line, and another is that negative input dims
Line.
It is further that the 0-10V dim signals, which turn pwm signal circuit, includes first resistor, second resistance, the 3rd electricity
Resistance, the first electric capacity, the second electric capacity, voltage-stabiliser tube, diode and 0-10V dim signals turn pwm signal chip, the first resistor
The control terminal of one end and switching tube connects, and the other end turns the electric current output pin of pwm signal chip with 0-10V dim signals, the
The electric current output pin that one end of two resistance turns pwm signal chip with 0-10V dim signals is connected, and the other end is connected with ground wire,
The power pins that one end of first electric capacity turns pwm signal chip with 0-10V dim signals are connected, and the other end is believed with 0-10V light modulations
With number turning the chip of pwm signal chip pin connection, 0-10V dim signals turn the power pins of pwm signal chip and direct current supplies
Power supply connects, and 0-10V dim signals with turning the chip of pwm signal chip pin is connected with ground wire, one end of 3rd resistor and
0-10V dim signals turn the voltage sense pin connection of pwm signal chip, and the other end is believed by the second electric capacity and 0-10V light modulations
Number turn the first of pwm signal chip with connecing chip pin connect, the negative pole of diode be connected with positive input light modulation line, positive pole and surely
The positive pole connection of pressure pipe, the negative pole connection 0-10V dim signals of voltage-stabiliser tube turn the first of pwm signal chip the with connecing chip pin,
Negative input light modulation line and 0-10V dim signals turn the first of pwm signal chip with connecing chip pin be connected, 0-10V dim signals
Turn the first of pwm signal chip with connecing chip pin be connected with ground wire, what 0-10V dim signals turned pwm signal chip second connects
Chip pin be connected with ground wire..
It is further that the 0-10V dim signals turn the chip that pwm signal chip is model CDM10V.
It is further, it is characterised in that the switching tube is NMOS tube, and the turning end of the switching tube is NMOS tube
Drain electrode, stationary contact connection end is the source electrode of NMOS tube, and control terminal is the grid of NMOS tube.
It is further that the switching tube is NPN triode, and the turning end of the switching tube is the collection of NPN triode
Electrode, stationary contact connection end are the emitter stage of NPN triode, and control terminal is the base stage of NPN triode.
The beneficial effects of the utility model are that the LED drive power of tunable optical is exported by above-mentioned constant pressure, can make driving
The constant voltage source or module of LED load have 0-10V dimming functions.
Brief description of the drawings
Fig. 1 is the circuit structure diagram for the LED drive power that the utility model constant pressure exports tunable optical.
Fig. 2 is the circuit structure diagram of embodiment one.
Fig. 3 is the circuit structure diagram of embodiment two.
Wherein, R1 is first resistor, and R2 is second resistance, and R3 is 3rd resistor, and C1 is the first electric capacity, and C2 is the second electricity
Hold, Q1 is switching tube, and Q2 is NPN triode, and Q3 is NMOS tube, and D1 is diode, and ZD1 is voltage-stabiliser tube, and U1 is 0-10V light modulation letters
Number turn pwm signal chip, 1 is the power pins that 0-10V dim signals turn pwm signal chip, and 2 be that 0-10V dim signals turn PWM
The chip of signal chip ground pin, 3 be the electric current output pin that 0-10V dim signals turn pwm signal chip.4 be that 0-10V is dimmed
Signal turns the second of pwm signal chip the with connecing chip pin, and 5 be that 0-10V dim signals turn the first of pwm signal chip and connect chip
Ground pin, 6 be the voltage sense pin that 0-10V dim signals turn pwm signal chip, and VCC is DC power supply.
Embodiment
Below in conjunction with the accompanying drawings and embodiment, the technical solution of the utility model is described in detail.
The LED drive power of constant pressure output tunable optical described in the utility model is born by AC-DC change-over circuits, light modulation line, LED
Carry, 0-10V dim signals turn pwm signal circuit and switching tube composition, its circuit structure diagram referring to Fig. 1, wherein, AC-DC conversion
The positive output end of circuit and the turning end of switching tube connect, the stationary contact connection end of switching tube and the negative output of AC-DC change-over circuits
End connection, the control terminal that light modulation line turns pwm signal circuit and switching tube by 0-10V dim signals connect.
Embodiment one
The present embodiment constant pressure output tunable optical LED drive power include AC-DC change-over circuits, light modulation line, LED load,
0-10V dim signals turn pwm signal circuit and switching tube, its circuit structure diagram referring to Fig. 2, wherein, AC-DC change-over circuits are just
Output end and the turning end of switching tube are connected, and the stationary contact connection end of switching tube is connected with the negative output terminal of AC-DC change-over circuits, are adjusted
The control terminal that light turns pwm signal circuit and switching tube by 0-10V dim signals connects.
In foregoing circuit, light modulation line includes two, and one is positive input light modulation line, and another is negative input light modulation line.
0-10V dim signals, which turn pwm signal circuit, includes first resistor R1, second resistance R2,3rd resistor R3, the first electricity
Hold C1, the second electric capacity C2, voltage-stabiliser tube ZD1, diode D1 and 0-10V dim signal and turn pwm signal chip U1, wherein, the first electricity
Resistance R1 one end is connected with switching tube Q1 control terminal, and the electric current that the other end turns pwm signal chip U1 with 0-10V dim signals is defeated
Go out pin 3, the electric current output pin 3 that second resistance R2 one end and 0-10V dim signals turn pwm signal chip U1 is connected, separately
One end is connected with ground wire, and the power pins 1 that the first electric capacity C1 one end and 0-10V dim signals turn pwm signal chip U1 are connected,
The other end and 0-10V dim signals with turning pwm signal chip U1 chip pin 2 are connected, and 0-10V dim signals turn pwm signal
Chip U1 power pins 1 are connected with DC power supply VCC, and 0-10V dim signals draw with turning pwm signal chip U1 chip
Pin 2 is connected with ground wire, and the voltage sense pin 6 that 3rd resistor R3 one end and 0-10V dim signals turn pwm signal chip U1 connects
Connect, the other end by the second electric capacity C2 and 0-10V dim signals turn the first of pwm signal chip U1 with connecing chip pin 5 be connected,
Diode D1 negative pole is connected with positive input light modulation line, and positive pole is connected with voltage-stabiliser tube ZD1 positive pole, and voltage-stabiliser tube ZD1 negative pole connects
Connect 0-10V dim signals and turn the first of pwm signal chip U1 the with connecing chip pin 5, negative input light modulation line and 0-10V dim signals
Turn the first of pwm signal chip U1 with connecing chip pin 5 connect, what 0-10V dim signals turned pwm signal chip U1 first connects core
Piece pin 5 be connected with ground wire, 0-10V dim signals turn the second of pwm signal chip with connecing chip pin 6 be connected with ground wire.
0-10V dim signals turn the chip that pwm signal chip U1 is model CDM10V.
Switching tube Q1 is NPN triode Q2, wherein, switching tube Q1 turning end is NPN triode Q2 colelctor electrode, quiet
Tactile connection end is NPN triode Q2 emitter stage, and control terminal is NPN triode Q2 base stage.
In practical application, the LED drive power of tunable optical is exported using the present embodiment constant pressure can reach following effect：
Alternating current is converted to direct current through AC-DC change-over circuits, and electric current is flowed into by the positive output end of AC-DC change-over circuits
NPN triode Q2 colelctor electrode, while 0-10V dim signals turn pwm signal chip U1 and detected just by voltage sense pin 6
After inputting the positive dim signal of dim signal line, it is defeated by electric current output pin 3 that 0-10V dim signals turn pwm signal chip U1
Go out the constant current of change in duty cycle, wherein, dutycycle changes with the voltage change of voltage sense pin 6.0-10V light modulation letters
Number turn electric current that pwm signal chip U1 electric current output pin 3 flows out through second resistance R2 to so that produced on second resistance R2
The pwm signal of raw high-low voltage change, pwm signal controls NPN triode Q2 break-make by R1, and then controls and flow through LED
Power in load, realize its brilliance control.
Embodiment two
The present embodiment constant pressure output tunable optical LED drive power include AC-DC change-over circuits, light modulation line, LED load,
0-10V dim signals turn pwm signal circuit and switching tube, its circuit structure diagram referring to Fig. 2, wherein, AC-DC change-over circuits are just
Output end and the turning end of switching tube are connected, and the stationary contact connection end of switching tube is connected with the negative output terminal of AC-DC change-over circuits, are adjusted
The control terminal that light turns pwm signal circuit and switching tube by 0-10V dim signals connects.
In foregoing circuit, light modulation line includes two, and one is positive input light modulation line, and another is negative input light modulation line.
0-10V dim signals, which turn pwm signal circuit, includes first resistor R1, second resistance R2,3rd resistor R3, the first electricity
Hold C1, the second electric capacity C2, voltage-stabiliser tube ZD1, diode D1 and 0-10V dim signal and turn pwm signal chip U1, wherein, the first electricity
Resistance R1 one end is connected with switching tube Q1 control terminal, and the electric current that the other end turns pwm signal chip U1 with 0-10V dim signals is defeated
Go out pin 3, the electric current output pin 3 that second resistance R2 one end and 0-10V dim signals turn pwm signal chip U1 is connected, separately
One end is connected with ground wire, and the power pins 1 that the first electric capacity C1 one end and 0-10V dim signals turn pwm signal chip U1 are connected,
The other end and 0-10V dim signals with turning pwm signal chip U1 chip pin 2 are connected, and 0-10V dim signals turn pwm signal
Chip U1 power pins 1 are connected with DC power supply VCC, and 0-10V dim signals draw with turning pwm signal chip U1 chip
Pin 2 is connected with ground wire, and the voltage sense pin 6 that 3rd resistor R3 one end and 0-10V dim signals turn pwm signal chip U1 connects
Connect, the other end by the second electric capacity C2 and 0-10V dim signals turn the first of pwm signal chip U1 with connecing chip pin 5 be connected,
Diode D1 negative pole is connected with positive input light modulation line, and positive pole is connected with voltage-stabiliser tube ZD1 positive pole, and voltage-stabiliser tube ZD1 negative pole connects
Connect 0-10V dim signals and turn the first of pwm signal chip U1 the with connecing chip pin 5, negative input light modulation line and 0-10V dim signals
Turn the first of pwm signal chip U1 with connecing chip pin 5 connect, what 0-10V dim signals turned pwm signal chip U1 first connects core
Piece pin 5 be connected with ground wire, 0-10V dim signals turn the second of pwm signal chip with connecing chip pin 6 be connected with ground wire.
0-10V dim signals turn the chip that pwm signal chip U1 is model CDM10V.
Switching tube Q1 is NMOS tube Q3, wherein, switching tube Q1 turning end is NMOS tube Q3 drain electrode, stationary contact connection end
As NMOS tube Q3 source electrode, control terminal are NMOS tube Q3 grid.
In practical application, the LED drive power of tunable optical is exported using the present embodiment constant pressure can reach following effect：
Alternating current is converted to direct current through AC-DC change-over circuits, and electric current is flowed into by the positive output end of AC-DC change-over circuits
NMOS tube Q3 drain electrode, while 0-10V dim signals turn pwm signal chip U1 and detect positive input by voltage sense pin 6
After the positive dim signal of dim signal line, 0-10V dim signals turn pwm signal chip U1 and accounted for by the output of electric current output pin 3
The empty constant current than change, wherein, dutycycle changes with the voltage change of voltage sense pin 6.0-10V dim signals turn
The electric current that pwm signal chip U1 electric current output pin 3 flows out is through second resistance R2 to ground so that is produced on second resistance R2 high
The pwm signal of low-voltage change, pwm signal controls NMOS tube Q3 break-make by R1, and then controls and flow through in LED load
Power, realize its brilliance control.
In embodiment one and embodiment two, the voltage sense pin 6 that 0-10V dim signals turn pwm signal chip U1 passes through
3rd resistor R3 and diode D1 detection 0-10V dim signals, diode D1 are used to prevent electric current from flowing into 0-10V dim signals and turning
Pwm signal chip U1 voltage sense pin 6, protection 0-10V dim signals turn pwm signal chip U1；Second electric capacity C2 plays filter
Ripple acts on；Voltage-stabiliser tube ZD1 limits the not super design load of dimmer voltage, and protection 0-10V dim signals turn pwm signal chip U1.
Claims (6)
1. constant pressure exports the LED drive power of tunable optical, including AC-DC change-over circuits, light modulation line and LED load, its feature exist
In, in addition to 0-10V dim signals turn pwm signal circuit and switching tube, the positive output end and switch of the AC-DC change-over circuits
The turning end connection of pipe, the stationary contact connection end of switching tube are connected with the negative output terminal of AC-DC change-over circuits, and light modulation line passes through 0-
10V dim signals turn pwm signal circuit and the control terminal of switching tube connects.
2. the LED drive power of constant pressure output tunable optical according to claim 1, it is characterised in that the light modulation line bag
Two are included, one is positive input light modulation line, and another is negative input light modulation line.
3. the LED drive power of constant pressure output tunable optical according to claim 2, it is characterised in that the 0-10V light modulations
Signal, which turns pwm signal circuit, includes first resistor, second resistance, 3rd resistor, the first electric capacity, the second electric capacity, voltage-stabiliser tube, two poles
Pipe and 0-10V dim signals turn pwm signal chip, and one end of the first resistor and the control terminal of switching tube connect, the other end
Turn the electric current output pin of pwm signal chip with 0-10V dim signals, one end and the 0-10V dim signals of second resistance turn PWM
The electric current output pin connection of signal chip, the other end are connected with ground wire, and one end and the 0-10V dim signals of the first electric capacity turn
The power pins connection of pwm signal chip, the other end and 0-10V dim signals with turning the chip of pwm signal chip pin are connected,
The power pins that 0-10V dim signals turn pwm signal chip are connected with DC power supply, and 0-10V dim signals turn pwm signal
The chip of chip pin be connected with ground wire, the voltage that one end of 3rd resistor turns pwm signal chip with 0-10V dim signals is examined
Survey pin connection, the other end by the second electric capacity and 0-10V dim signals turn the first of pwm signal chip with connecing chip pin connect
Connect, the negative pole of diode is connected with positive input light modulation line, the positive pole connection of positive pole and voltage-stabiliser tube, the negative pole connection 0- of voltage-stabiliser tube
10V dim signals turn the first of pwm signal chip, and pin, negative input light modulation line turn PWM letters with 0-10V dim signals with connecing chip
Pin connects the first of number chip with connecing chip, and 0-10V dim signals turn the first of pwm signal chip the with connecing chip pin and ground
Line connects, 0-10V dim signals turn the second of pwm signal chip with connecing chip pin be connected with ground wire.
4. the LED drive power of constant pressure output tunable optical according to claim 3, it is characterised in that the 0-10V light modulations
Signal turns the chip that pwm signal chip is model CDM10V.
5. the LED drive power of the constant pressure output tunable optical according to claim 1-4 any one, it is characterised in that institute
It is NMOS tube to state switching tube, and the turning end of the switching tube is the drain electrode of NMOS tube, and stationary contact connection end is the source of NMOS tube
Pole, control terminal are the grid of NMOS tube.
6. the LED drive power of the constant pressure output tunable optical according to claim 1-4 any one, it is characterised in that institute
It is NPN triode to state switching tube, and the turning end of the switching tube is the colelctor electrode of NPN triode, and stationary contact connection end is NPN
The emitter stage of triode, control terminal are the base stage of NPN triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720887503.4U CN206932448U (en) | 2017-07-20 | 2017-07-20 | Constant pressure exports the LED drive power of tunable optical |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720887503.4U CN206932448U (en) | 2017-07-20 | 2017-07-20 | Constant pressure exports the LED drive power of tunable optical |
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| CN206932448U true CN206932448U (en) | 2018-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111273593A (en) * | 2020-03-23 | 2020-06-12 | 珠海嘉润医用影像科技有限公司 | Endoscope intelligent control circuit |
-
2017
- 2017-07-20 CN CN201720887503.4U patent/CN206932448U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111273593A (en) * | 2020-03-23 | 2020-06-12 | 珠海嘉润医用影像科技有限公司 | Endoscope intelligent control circuit |
| CN111273593B (en) * | 2020-03-23 | 2021-09-21 | 珠海嘉润医用影像科技有限公司 | Endoscope intelligent control circuit |
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Effective date of registration: 20190723 Address after: 621000 Exit Processing Zone 201 Factory Building, 261 Feiyun Avenue East Section, Mianyang High-tech Zone, Sichuan Province Patentee after: Sichuan Hongrui Electrical Co., Ltd. Address before: County 622651 Sichuan city of Mianyang Province Hua Gai Zhen Luo Sheng Jie Sichuan Changhong Electronics Co., Ltd. Patentee before: SICHUAN CHANGHONG ELECTRONIC PARTS CO., LTD. |