CN106452071B - A kind of power control circuit of wide frequency ranges - Google Patents
A kind of power control circuit of wide frequency ranges Download PDFInfo
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- CN106452071B CN106452071B CN201611036697.3A CN201611036697A CN106452071B CN 106452071 B CN106452071 B CN 106452071B CN 201611036697 A CN201611036697 A CN 201611036697A CN 106452071 B CN106452071 B CN 106452071B
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- resistance
- triode
- separately connected
- diode
- inductance
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
Abstract
The invention discloses a kind of power control circuits of wide frequency ranges, including resistance R1, triode Q1, capacitor C1, inductance L1, diode D1 and diode D2, the one end the resistance R1 is separately connected triode Q1 emitter, resistance R9, resistance R6 and power supply VCC, the resistance R6 other end is separately connected resistance R3 and diode D1 cathode, the resistance R3 other end is separately connected resistance R5, resistance R4 and triode Q2 base stage, the resistance R5 other end is separately connected triode Q1 collector, diode D2 cathode and inductance L1, triode Q1 base stage is separately connected the resistance R1 other end and resistance R2, resistance R2 other end connecting triode Q2 collector.The power control circuit of wide frequency ranges of the present invention cooperates inductance L1 using triode, the frequency of power supply is controlled, the power supply of different frequencies can be obtained in parameter by changing inductance L, adjustable range is larger, circuit structure is simple, it is at low cost, and due to not using any chip component, strong antijamming capability.
Description
Technical field
The present invention relates to a kind of power supply, the power control circuit of specifically a kind of wide frequency ranges.
Background technique
Direct-current switch power supply due to it is small in size, light-weight and high-efficient the advantages that, have been more and more widely used.It is existing
Switching Power Supply is divided into voltage mode Switching Power Supply and current-mode Switching Power Supply, wherein the basic work of current-mode Switching Power Supply
Make principle are as follows: the d. c. voltage signal of input is subjected to PWM processing and filtering processing, by the DC voltage after being filtered
Signal is sent into comparator after carrying out error amplification, and comparator is by the amplified signal of the error and from the inductance of low-pass filter
The current signal adopted compares, and the PWM signal of certain duty ratio is generated according to the level signal generated more afterwards, uses PWM
Signal removes the switch elements such as driving thyristor, obtains stable output voltage signal.
In the application of existing power supply, due to the pressure that product space and cost and external devices minimize, need straight
The switching frequency of current switching power supply is higher and higher, but in current current-mode Switching Power Supply, the comparator in control loop
It needs to acquire the electric current on inductance by sample circuit, but there are the limitations of time delay for current sample circuit, it can not be wider
Frequency range be adjusted.
Summary of the invention
The purpose of the present invention is to provide a kind of power control circuits of wide frequency ranges, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme:
A kind of power control circuit of wide frequency ranges, including resistance R1, triode Q1, capacitor C1, inductance L1, diode
D1 and the one end diode D2, the resistance R1 are separately connected triode Q1 emitter, resistance R9, resistance R6 and power supply VCC, resistance
The R6 other end is separately connected resistance R3 and diode D1 cathode, and the resistance R3 other end is separately connected resistance R5, resistance R4 and three poles
Pipe Q2 base stage, the resistance R5 other end are separately connected triode Q1 collector, diode D2 cathode and inductance L1, triode Q1 base stage
It is separately connected the resistance R1 other end and resistance R2, resistance R2 other end connecting triode Q2 collector, triode Q2 emitter point
Not Lian Jie resistance R10 and triode Q3 emitter, triode Q3 base stage is separately connected resistance R8 and resistance R7, the resistance R7 other end
It is separately connected the inductance L1 other end, capacitor C1 and output end vo, the capacitor C1 other end is separately connected the resistance R8 other end, diode
D2 anode, the resistance R10 other end, the resistance R4 other end and diode D1 anode are simultaneously grounded, and the power supply VCC voltage is 24V, institute
Stating triode Q2 and triode Q3 is NPN triode, the resistance R9 other end connecting triode Q3 collector.
Preferably, the power supply VCC voltage is 24V.
Preferably, the triode Q2 and triode Q3 is NPN triode.
Preferably, the triode Q1 is PNP triode.
Preferably, the diode D1 is zener diode.
Compared with prior art, the beneficial effects of the present invention are: the power control circuit of wide frequency ranges of the present invention uses
Triode cooperates inductance L1, controls the frequency of power supply, and different frequencies can be obtained in the parameter by changing inductance L
Power supply, adjustable range is larger, and circuit structure is simple, at low cost, and due to not using any chip component, anti-interference ability
By force.
Detailed description of the invention
Fig. 1 is the circuit diagram of the power control circuit of wide frequency ranges.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
In the embodiment of the present invention, a kind of power control circuit of wide frequency ranges, including resistance R1, triode Q1, capacitor
C1, inductance L1, diode D1 and the one end diode D2, the resistance R1 are separately connected triode Q1 emitter, resistance R9, resistance
R6 and power supply VCC, the resistance R6 other end are separately connected resistance R3 and diode D1 cathode, and the resistance R3 other end is separately connected resistance
R5, resistance R4 and triode Q2 base stage, the resistance R5 other end are separately connected triode Q1 collector, diode D2 cathode and inductance
L1, triode Q1 base stage are separately connected the resistance R1 other end and resistance R2, resistance R2 other end connecting triode Q2 collector, and three
Pole pipe Q2 emitter is separately connected resistance R10 and triode Q3 emitter, and triode Q3 base stage is separately connected resistance R8 and resistance
R7, the resistance R7 other end are separately connected the inductance L1 other end, capacitor C1 and output end vo, and the capacitor C1 other end is separately connected resistance
The R8 other end, diode D2 anode, the resistance R10 other end, the resistance R4 other end and diode D1 anode are simultaneously grounded, the power supply
VCC voltage is 24V, and the triode Q2 and triode Q3 are NPN triode, the resistance R9 other end connecting triode Q3
Collector；The power supply VCC voltage is 24V.
Referring to Fig. 1, Q2 base stage obtains electric current by biasing circuit and is connected, generated current collection when power supply VCC is connected
Q1 is connected in electrode current, and because energy storage inductor L1 electric current cannot be mutated, so Q3 is still off, L1 polarity of voltage is that the left positive right side is negative,
With the promotion of L1 electric current, Q3 gradually switchs to be connected, and increases emitter voltage, this voltage plays negative-feedback for Q2 and makees
Weakened with, Q2 conducting, Q1 is just synchronous to be weakened, this just enables L1 polarity of voltage overturn, for it is left it is negative it is right just accelerate the conducting of Q3, Q2,
Q3 tends to cut-off, external loading (not shown) that L1 connect by output end vo, D2 electric discharge, and subsequent output voltage declines,
Q3 conducting weakens, and the conducting of Q2, Q3 is caused to enhance, and transmits electricity again to L1, and L1 polarity of voltage is overturn again, to be left positive right negative, then
Q3 is intended to end, and so enters circulation.
The power control circuit of wide frequency ranges of the present invention cooperates inductance L1 using triode, controls to the frequency of power supply
The power supply of different frequencies can be obtained in system, the parameter by changing inductance L, and adjustable range is larger, and circuit structure is simple, cost
It is low, and due to not using any chip component, strong antijamming capability.
Claims (3)
1. a kind of power control circuit of wide frequency ranges, including resistance R1, triode Q1, capacitor C1, inductance L1, diode D1
With diode D2, which is characterized in that the one end the resistance R1 is separately connected triode Q1 emitter, resistance R9, resistance R6 and electricity
Source VCC, the resistance R6 other end are separately connected resistance R3 and diode D1 cathode, and the resistance R3 other end is separately connected resistance R5, electricity
Hindering R4 and triode Q2 base stage, the resistance R5 other end is separately connected triode Q1 collector, diode D2 cathode and inductance L1, and three
Pole pipe Q1 base stage is separately connected the resistance R1 other end and resistance R2, resistance R2 other end connecting triode Q2 collector, triode
Q2 emitter is separately connected resistance R10 and triode Q3 emitter, and triode Q3 base stage is separately connected resistance R8 and resistance R7, electricity
The resistance R7 other end is separately connected the inductance L1 other end, capacitor C1 and output end vo, and it is another that the capacitor C1 other end is separately connected resistance R8
One end, diode D2 anode, the resistance R10 other end, the resistance R4 other end and diode D1 anode are simultaneously grounded, the power supply VCC
Voltage is 24V, and the triode Q2 and triode Q3 are NPN triode, the resistance R9 other end connecting triode Q3 collection
Electrode.
2. the power control circuit of wide frequency ranges according to claim 1, which is characterized in that the triode Q1 is
PNP triode.
3. the power control circuit of wide frequency ranges according to claim 1, which is characterized in that the diode D1 is steady
Press diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611036697.3A CN106452071B (en) | 2016-11-22 | 2016-11-22 | A kind of power control circuit of wide frequency ranges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611036697.3A CN106452071B (en) | 2016-11-22 | 2016-11-22 | A kind of power control circuit of wide frequency ranges |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106452071A CN106452071A (en) | 2017-02-22 |
| CN106452071B true CN106452071B (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611036697.3A Active CN106452071B (en) | 2016-11-22 | 2016-11-22 | A kind of power control circuit of wide frequency ranges |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107087110A (en) * | 2017-05-24 | 2017-08-22 | 长沙金定信息技术有限公司 | A kind of efficient image processing system |
| CN107124591A (en) * | 2017-05-25 | 2017-09-01 | 长沙金定信息技术有限公司 | A kind of multiple terminals image imput process system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1239347A (en) * | 1998-06-12 | 1999-12-22 | 松下电工株式会社 | Self-exciting d.c-d. c converter and source device |
| JP2004007908A (en) * | 2002-05-31 | 2004-01-08 | Murata Mfg Co Ltd | Switching circuit and electronic device using the same |
| CN203554287U (en) * | 2013-11-18 | 2014-04-16 | 青岛伏科太阳能有限公司 | Bipolar power supply circuit and solar power charge and discharge controller |
| CN103904887A (en) * | 2012-12-28 | 2014-07-02 | 深圳市海洋王照明工程有限公司 | Self-excited buck circuit and light fixture |
| CN205070791U (en) * | 2015-09-22 | 2016-03-02 | 广州金升阳科技有限公司 | Switching power supply from supply circuit |
| CN205195540U (en) * | 2015-11-10 | 2016-04-27 | 袁建儿 | Switching mode voltage stabilizer convenient to heat dissipation |
-
2016
- 2016-11-22 CN CN201611036697.3A patent/CN106452071B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1239347A (en) * | 1998-06-12 | 1999-12-22 | 松下电工株式会社 | Self-exciting d.c-d. c converter and source device |
| JP2000004579A (en) * | 1998-06-12 | 2000-01-07 | Matsushita Electric Works Ltd | Self-excited dc-to-dc converter and power supply device therefor |
| JP2004007908A (en) * | 2002-05-31 | 2004-01-08 | Murata Mfg Co Ltd | Switching circuit and electronic device using the same |
| CN103904887A (en) * | 2012-12-28 | 2014-07-02 | 深圳市海洋王照明工程有限公司 | Self-excited buck circuit and light fixture |
| CN203554287U (en) * | 2013-11-18 | 2014-04-16 | 青岛伏科太阳能有限公司 | Bipolar power supply circuit and solar power charge and discharge controller |
| CN205070791U (en) * | 2015-09-22 | 2016-03-02 | 广州金升阳科技有限公司 | Switching power supply from supply circuit |
| CN205195540U (en) * | 2015-11-10 | 2016-04-27 | 袁建儿 | Switching mode voltage stabilizer convenient to heat dissipation |
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| CN106452071A (en) | 2017-02-22 |
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Effective date of registration: 20190228 Address after: 516006 Xikeng Industrial Zone 137, Huihuan Street, Zhongkai High-tech Zone, Huizhou City, Guangdong Province (Factory A) Applicant after: Wo Sheng Lighting Co., Ltd of Huizhou City Address before: 450000 room C260, 1 tower, 96, Ruida Road, Zhengzhou high tech Industrial Development Zone, Henan Applicant before: Zhengzhou integrity Information Technology Co., Ltd. |
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