CN204190972U - Big current pressure-adjustable circuit - Google Patents
Big current pressure-adjustable circuit Download PDFInfo
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- CN204190972U CN204190972U CN201420503473.9U CN201420503473U CN204190972U CN 204190972 U CN204190972 U CN 204190972U CN 201420503473 U CN201420503473 U CN 201420503473U CN 204190972 U CN204190972 U CN 204190972U
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- resistance
- circuit
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- adjustable
- output
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model discloses a kind of big current pressure-adjustable circuit, relate to light-adjusting module field.A kind of big current pressure-adjustable of the utility model circuit, comprising: an Input voltage terminal, a regulating circuit, an output voltage terminal, wherein, also comprise: an adder and substracter circuit, an adjustable reference potential circuit; Described output voltage terminal is connected with the first input end of described adder and substracter circuit with after a reference voltage parallel connection; Second input of described adder and substracter circuit is connected with described adjustable reference potential circuit, and the output of described adder and substracter circuit is connected with the feedback end of described regulating circuit.The utility model adopts program-controlled DC-DC Switching Power Supply design, single-chip microcomputer output pwm signal control 0-10V is adopted smoothly to export, switch power technology is adopted effectively to solve energy consumption, effectively improve output driving force, solve the problem of Width funtion input/output bound and heating simultaneously, substantially increase the operating efficiency of module.
Description
Technical field
The utility model relates to a kind of light-adjusting module, particularly relates to a kind of big current pressure-adjustable circuit.
Background technology
In existing intelligent lighting system, 0-10V exports light-adjusting module, be mostly small-power driver output, it is the 5V output circuit figure adopting XL013 in prior art that drive current is generally tens milliamperes of Fig. 1, and be input as 8 ~ 36V, adjusting resistance R1, R2 can obtain the output voltage of 1.25V-32V.
Utility model content
The utility model relates to a kind of big current pressure-adjustable circuit, in order to effectively to reduce energy consumption, improves and exports driving force.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
A kind of big current pressure-adjustable circuit, comprising: an Input voltage terminal, a regulating circuit, an output voltage terminal, wherein, also comprise: an adder and substracter circuit, an adjustable reference potential circuit; Described output voltage terminal is connected with the first input end of described adder and substracter circuit with after a reference voltage parallel connection; Second input of described adder and substracter circuit is connected with described adjustable reference potential circuit, and the output of described adder and substracter circuit is connected with the feedback end of described regulating circuit.
Big current pressure-adjustable circuit as above, wherein, described adder and substracter circuit comprises: be connected with the first input end of one first operational amplifier after described output voltage terminal series connection one first resistance, one second resistance; Be connected with the first input end of described first operational amplifier after one reference voltage input terminal series connection one the 3rd resistance; Be connected with the second input of described first operational amplifier after output series connection one the 4th resistance of described adjustable reference potential circuit; The output of described first operational amplifier is connected with the feedback end of described regulating circuit; One the 5th resistance is also connected with between the output of described first operational amplifier and the second input of described first operational amplifier.
Big current pressure-adjustable circuit as above, wherein, described adjustable reference potential circuit is that a PWM changes amplified analog voltage output circuit, and described PWM changes amplified analog voltage output circuit and comprises: a PWM input connects a filter circuit and computing electric discharge road.
Big current pressure-adjustable circuit as above, wherein, described adjustable reference potential circuit specifically comprises: a PWM input is connected with the first input end of one second operational amplifier successively with after one the 6th resistance, the 7th resistance, the 8th resistant series; Described PWM input is also connected with the second input of described second operational amplifier successively with after one the 9th resistance, the tenth resistant series; One end of one first electric capacity is connected between described 6th resistance and described 7th resistance, one end of one second electric capacity is connected between described 7th resistance and described 8th resistance, the other end of described first electric capacity, the other end of described second electric capacity are all connected between described 9th resistance and described tenth resistance, and ground connection; 1 the 11 resistance is connected with between the output of described second operational amplifier and the second input of described second operational amplifier.
Big current pressure-adjustable circuit as above, wherein, described PWM input is connected with a single-chip microcomputer.
Big current pressure-adjustable circuit as above, wherein, described reference voltage end is connected with reference voltage source.
Big current pressure-adjustable circuit as above, wherein, the resistance of described first resistance, described second resistance, described 3rd resistance, described 4th resistance, described 5th resistance is 100k ohm.
Big current pressure-adjustable circuit as above, wherein, the resistance of described 6th resistance is 1k ohm, and the resistance of described 7th resistance, described 8th resistance, described tenth resistance is 100k ohm, the resistance of described 9th resistance is 1 megohm, and the resistance of described 11 resistance is 200k ohm.
Big current pressure-adjustable circuit as above, wherein, the input voltage value of described Input voltage terminal is: 8 ~ 36V, and the voltage range that described adjustable reference potential circuit exports is: 0 ~ 9.9V; The voltage of the output of described first operational amplifier is: 1.25V, and described reference voltage is 0.625V; The output voltage values of described output voltage terminal is 0 ~ 9.9V.
Big current pressure-adjustable circuit as above, wherein, described first operational amplifier, described second operational amplifier are: LM358 amplifier.
In sum, owing to have employed technique scheme, the utility model adopts program-controlled DC-DC Switching Power Supply design, single-chip microcomputer output pwm signal control 0-10V is adopted smoothly to export, switch power technology is adopted effectively to solve energy consumption, effectively improve output driving force, solve the problem of Width funtion input/output bound and heating simultaneously, substantially increase the operating efficiency of module.
Accompanying drawing explanation
Fig. 1 is the 5V output circuit figure adopting XL4013 in prior art;
Fig. 2 is the circuit diagram of the utility model big current pressure-adjustable circuit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further:
Fig. 2 is the circuit diagram of the utility model big current pressure-adjustable circuit 2, refer to Fig. 2, a kind of big current pressure-adjustable circuit, comprise: Fig. 1 is the 5V output circuit figure adopting XL4013 in prior art, refer to Fig. 1, one Input voltage terminal 1, regulating circuit 2, output voltage terminal 3, except the annexation of feedback end, the annexation of Input voltage terminal 1, regulating circuit 2, output voltage terminal 3 all can adopt the circuit identical with Fig. 1, wherein, also comprise: an adder and substracter circuit, an adjustable reference potential circuit; Output voltage terminal 3 is connected with the first input end of adder and substracter circuit with after a reference voltage parallel connection; Second input of adder and substracter circuit is connected with adjustable reference potential circuit, the output of adder and substracter circuit is connected with the feedback end of regulating circuit 2, the output voltage of adjustable reference potential circuit can regulate within the specific limits, the utility model adopts switch power technology effectively to reduce energy consumption, greatly improve and export driving force, obvious effect is played to simplification loop light modulation.
Adder and substracter circuit of the present utility model comprises: output voltage terminal 3 is connected, and one first resistance 51,1 second resistance 52 is rear to be connected with the first input end of one first operational amplifier 41; Be connected with the first input end of the first operational amplifier 41 after one reference voltage input terminal series connection one the 3rd resistance 53; Be connected with the second input of the first operational amplifier 41 after output series connection one the 4th resistance 54 of adjustable reference potential circuit; The output of the first operational amplifier 41 is connected with the feedback end of regulating circuit 2; One the 5th resistance 55 is also connected with between the output of the first operational amplifier 41 and the second input of the first operational amplifier 41.
Further, the 12 resistance 62 of a ground connection is connected with between the first resistance 51, second resistance 52 of the present invention; Second input of the present invention is also connected with the 13 resistance of a ground connection.
Adjustable reference potential circuit of the present utility model is that a PWM changes amplified analog voltage output circuit, and PWM changes amplified analog voltage output circuit and comprises: a PWM input connects a filter circuit and computing electric discharge road.
Further, adjustable reference potential circuit of the present utility model specifically comprises: a PWM input is connected with the first input end of one second operational amplifier 42 after connecting with one the 6th resistance 56, the 7th resistance 57, the 8th resistance 58 successively; PWM input is connected with the second input of the second operational amplifier 42 after also connecting with one the 9th resistance 59, the tenth resistance 60 successively; One end of one first electric capacity 71 is connected between leakage resistance and the 7th resistance 57, one end of one second electric capacity 72 is connected between the 7th resistance 57 and the 8th resistance 58, and the other end of the first electric capacity 71, the other end of the second electric capacity 72 to be all connected between the 9th resistance 59 with the tenth resistance 60 and to connect with ground; 1 the 11 resistance 61 is connected with between the output of the second operational amplifier 42 and the second input of the second operational amplifier 42.
PWM input of the present utility model is connected with a single-chip microcomputer.
Reference voltage end 8 of the present utility model is connected with reference voltage source.
The resistance of the first resistance 51, second resistance 52 of the present utility model, the 3rd resistance 53, the 4th resistance 54, the 5th resistance 55 is 100k ohm.
The resistance of the 6th resistance 56 of the present utility model is 1k ohm, and the resistance of the 7th resistance 57, the 8th resistance 58, the tenth resistance 60 is 100k ohm, and the resistance of the 9th resistance 59 is 1m ohm, and the resistance of the 11 resistance 61 is 200k ohm.
The input voltage value of Input voltage terminal 1 of the present utility model is: 8 ~ 36V, and the voltage range that adjustable reference potential circuit exports is: 0 ~ 9.9V; The voltage of the output of the first operational amplifier 41 is: 1.25V, and reference voltage is 0.625V; The output voltage values of output voltage terminal 3 is 0 ~ 9.9V.
In an embodiment of the present utility model, exporting to obtain 0-10V programmable voltage, introducing reference voltage 0.625V, exporting the output of control voltage by single-chip microcomputer (3.3V powers) PWM
Wherein, the point between the 7th resistance 57 and the 8th resistance 58 is A point, A point voltage (0-3.3V): VA=3.3*D (V); Note: MCU operating voltage is 3.3V, D is PWM output duty cycle; The output of adjustable reference potential circuit is B point, B point voltage (0-9.9V): VB=VA*3 (V); Point between first resistance 51 and the second resistance 52 is C point, C point voltage: VC=VOUT/2; The output of the first operational amplifier 41 is D point, D point voltage: VD=(VC+0.625) * 2-VB=VOUT+1.25-VB(1).During real work, the feedback threshold voltage of U1 is 1.25V, VD=1.25 is substituted into formula (1), obtains: VOUT=VB, and namely output voltage range is 0-9.9V
The utility model, in 0-10V output area, reduces the power consumption of module to greatest extent.Need not fin in 1A output situation.
First operational amplifier 41, second operational amplifier 42 of the present utility model is: LM358 amplifier.
Claims (10)
1. a big current pressure-adjustable circuit, comprising: an Input voltage terminal, a regulating circuit, an output voltage terminal, is characterized in that, also comprise: an adder and substracter circuit, an adjustable reference potential circuit; Described output voltage terminal is connected with the first input end of described adder and substracter circuit with after a reference voltage parallel connection; Second input of described adder and substracter circuit is connected with described adjustable reference potential circuit, and the output of described adder and substracter circuit is connected with the feedback end of described regulating circuit.
2. big current pressure-adjustable circuit according to claim 1, it is characterized in that, described adder and substracter circuit comprises: be connected with the first input end of one first operational amplifier after described output voltage terminal series connection one first resistance, one second resistance; Be connected with the first input end of described first operational amplifier after one reference voltage input terminal series connection one the 3rd resistance; Be connected with the second input of described first operational amplifier after output series connection one the 4th resistance of described adjustable reference potential circuit; The output of described first operational amplifier is connected with the feedback end of described regulating circuit; One the 5th resistance is also connected with between the output of described first operational amplifier and the second input of described first operational amplifier.
3. big current pressure-adjustable circuit according to claim 2, it is characterized in that, described adjustable reference potential circuit is that a PWM changes amplified analog voltage output circuit, and described PWM changes amplified analog voltage output circuit and comprises: a PWM input connects a filter circuit and computing electric discharge road.
4. big current pressure-adjustable circuit according to claim 3, it is characterized in that, described adjustable reference potential circuit specifically comprises: a PWM input is connected with the first input end of one second operational amplifier successively with after one the 6th resistance, the 7th resistance, the 8th resistant series; Described PWM input is also connected with the second input of described second operational amplifier successively with after one the 9th resistance, the tenth resistant series; One end of one first electric capacity is connected between described 6th resistance and described 7th resistance, one end of one second electric capacity is connected between described 7th resistance and described 8th resistance, the other end of described first electric capacity, the other end of described second electric capacity are all connected between described 9th resistance and described tenth resistance, and ground connection; 1 the 11 resistance is connected with between the output of described second operational amplifier and the second input of described second operational amplifier.
5. big current pressure-adjustable circuit according to claim 3, is characterized in that, described PWM input is connected with a single-chip microcomputer.
6. big current pressure-adjustable circuit according to claim 1, it is characterized in that, described reference voltage end is connected with reference voltage source.
7. big current pressure-adjustable circuit according to claim 2, is characterized in that, the resistance of described first resistance, described second resistance, described 3rd resistance, described 4th resistance, described 5th resistance is 100k ohm.
8. big current pressure-adjustable circuit according to claim 4, it is characterized in that, the resistance of described 6th resistance is 1k ohm, the resistance of described 7th resistance, described 8th resistance, described tenth resistance is 100k ohm, the resistance of described 9th resistance is 1 megohm, and the resistance of described 11 resistance is 200k ohm.
9., according to the arbitrary described big current pressure-adjustable circuit of claim 7 or 8, it is characterized in that, the input voltage value of described Input voltage terminal is: 8 ~ 36V, and the voltage range that described adjustable reference potential circuit exports is: 0 ~ 9.9V; The voltage of the output of described first operational amplifier is: 1.25V, and described reference voltage is 0.625V; The output voltage values of described output voltage terminal is 0 ~ 9.9V.
10., according to the arbitrary described big current pressure-adjustable circuit of claim 4, it is characterized in that, described first operational amplifier, described second operational amplifier are: LM358 amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420503473.9U CN204190972U (en) | 2014-09-03 | 2014-09-03 | Big current pressure-adjustable circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420503473.9U CN204190972U (en) | 2014-09-03 | 2014-09-03 | Big current pressure-adjustable circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204190972U true CN204190972U (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420503473.9U Expired - Fee Related CN204190972U (en) | 2014-09-03 | 2014-09-03 | Big current pressure-adjustable circuit |
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| Country | Link |
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| CN (1) | CN204190972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113852278A (en) * | 2021-09-04 | 2021-12-28 | 深圳市普德新星电源技术有限公司 | Accurate voltage regulating circuit of wide range output |
-
2014
- 2014-09-03 CN CN201420503473.9U patent/CN204190972U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113852278A (en) * | 2021-09-04 | 2021-12-28 | 深圳市普德新星电源技术有限公司 | Accurate voltage regulating circuit of wide range output |
| CN113852278B (en) * | 2021-09-04 | 2022-10-28 | 深圳市普德新星电源技术有限公司 | Accurate voltage regulating circuit of wide range 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20170903 |