CN106452071A - Power control circuit in wide frequency scale - Google Patents
Power control circuit in wide frequency scale Download PDFInfo
- Publication number
- CN106452071A CN106452071A CN201611036697.3A CN201611036697A CN106452071A CN 106452071 A CN106452071 A CN 106452071A CN 201611036697 A CN201611036697 A CN 201611036697A CN 106452071 A CN106452071 A CN 106452071A
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- Prior art keywords
- resistance
- triode
- diode
- resistor
- control circuit
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a power control circuit in a wide frequency scale, comprising a resistor R1, a dynatron Q1, a capacitor C1, an inductor L1, a diode D1 and a diode D2; one end of the resistor R1 is respectively connected with an emitting electrode of the dynatron Q1, a resistor R9, a resistor R6, and a power source VCC; the other end of the resistor R6 is respectively connected with the resistor R3 and the cathode of the diode D1, the other end of the resistor R3 is respectively connected with the resistor R5, the resistor R4 and a base electrode of the dynatron Q2; the other end of the resistor R5 is respectively connected with the collector of the dynatron Q1, the cathode of the diode D2 and the inductor L1; the base electrode of the dynatron Q1 is respectively connected with the other end of the resistor R1 and the resistor R2, and the other end of the resistor R2 is connected with the collector of the dynatron Q2. The power control circuit in the wide frequency scale shall apply the dynatron and the inductor L1 to control the power frequency; through changing the parameter of the inductor L, power source with different frequencies can be obtained, the adjusting scale is big; the circuit is simple in structure and low in cost; moreover, for there is no any chip element, the capacity of resisting disturbance is strong.
Description
Technical field
The present invention relates to a kind of power supply, specifically a kind of power control circuit of wide frequency ranges.
Background technology
The advantages of direct-current switch power supply is due to small volume, lightweight and efficiency high, is increasingly widely applied.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
As principle it is：The d. c. voltage signal of input is carried out PWM process and filtering process, the DC voltage after processing will be filtered
Signal sends into comparator after carrying out error amplification, and comparator is by the signal after the amplification of this error with from the inductance of low pass filter
Adopt the current signal obtaining to compare, generate the PWM signal of certain dutycycle according to the level signal generating more afterwards, using PWM
Signal goes to drive the switch elements such as IGCT, obtains stable output voltage signal.
In the application of existing power supply, due to the pressure of product space and cost and external devices miniaturization, need straight
The switching frequency more and more higher of current switching power supply, but the comparator in current current-mode Switching Power Supply, in control loop
Need to gather the electric current on inductance by sample circuit, but current sample circuit has the restriction of time delay it is impossible to wider
Frequency range be adjusted.
Content of the invention
It is an object of the invention to provide a kind of power control circuit of wide frequency ranges, to solve in above-mentioned background technology
The problem proposing.
For achieving the above object, the present invention provides following technical scheme：
A kind of power control circuit of wide frequency ranges, including resistance R1, triode Q1, electric capacity C1, inductance L1, diode D1 and
Diode D2, described resistance R1 one end connecting triode Q1 emitter stage, resistance R9, resistance R6 and power supply VCC respectively, resistance R6 are another
One end connects resistance R3 and diode D1 negative pole respectively, and the resistance R3 other end connects resistance R5, resistance R4 and triode Q2 respectively
Base stage, resistance R5 other end connecting triode Q1 colelctor electrode, diode D2 negative pole and inductance L1 respectively, triode Q1 base stage is respectively
Connect the resistance R1 other end and resistance R2, resistance R2 other end connecting triode Q2 colelctor electrode, triode Q2 emitter stage connects respectively
Connecting resistance R10 and triode Q3 emitter stage, triode Q3 base stage connects resistance R8 and resistance R7 respectively, and the resistance R7 other end is respectively
Connect the inductance L1 other end, electric capacity C1 and output end vo, it is another that the electric capacity C1 other end connects the resistance R8 other end, resistance R10 respectively
One end, the resistance R4 other end and diode D1 positive pole are simultaneously grounded.
Preferably, described power supply VCC voltage is 24V.
Preferably, described triode Q2 and triode Q3 is NPN triode.
Preferably, described triode Q1 is PNP triode.
Preferably, described diode D1 is Zener diode.
Compared with prior art, the invention has the beneficial effects as follows：The power control circuit of wide frequency ranges of the present invention adopts
Triode coordinates inductance L1, and the frequency of power supply is controlled, and can get different frequencies by the parameter changing inductance L
Power supply, adjustable range is larger, and circuit structure is simple, low cost, and due to not using any chip component, antijamming capability
By force.
Brief description
Fig. 1 is the circuit diagram of the power control circuit of wide frequency ranges.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
In the embodiment of the present invention, a kind of power control circuit of wide frequency ranges, including resistance R1, triode Q1, electric capacity
C1, inductance L1, diode D1 and diode D2, described resistance R1 one end connecting triode Q1 emitter stage, resistance R9, resistance respectively
R6 and power supply VCC, the resistance R6 other end connects resistance R3 and diode D1 negative pole respectively, and the resistance R3 other end connects resistance respectively
R5, resistance R4 and triode Q2 base stage, resistance R5 other end connecting triode Q1 colelctor electrode, diode D2 negative pole and inductance respectively
L1, triode Q1 base stage connects the resistance R1 other end and resistance R2 respectively, resistance R2 other end connecting triode Q2 colelctor electrode, and three
Pole pipe Q2 emitter stage connects resistance R10 and triode Q3 emitter stage respectively, and triode Q3 base stage connects resistance R8 and resistance respectively
R7, the resistance R7 other end connects the inductance L1 other end, electric capacity C1 and output end vo respectively, and the electric capacity C1 other end connects resistance respectively
The R8 other end, the resistance R10 other end, the resistance R4 other end and diode D1 positive pole are simultaneously grounded；Described power supply VCC voltage is 24V.
Refer to Fig. 1, when power supply VCC connects, Q2 base stage obtains electric current by biasing circuit and turns on, produced current collection
Electrode current makes Q1 turn on, and because energy storage inductor L1 electric current can not be mutated, so Q3 is still off, L1 polarity of voltage is that a left side is just right negative,
With the lifting of L1 electric current, Q3 gradually switchs to turn on, and so that emitter voltage is raised, and this voltage plays negative-feedback for Q2 and makees
Weakened with, Q2 conducting, Q1 is just synchronous to be weakened, and this just makes L1 polarity of voltage overturn, for the left negative right side just, accelerate the conducting of Q3, Q2,
Q3 tends to cut-off, the external loading that L1 is connected by output end vo（In figure is not shown）, D2 electric discharge, subsequent output voltage declines,
Q3 conducting weakens, and causes the conducting of Q2, Q3 to strengthen, and transmits electricity to L1 again, and L1 polarity of voltage overturns again, just right negative for a left side, then
Q3 trends towards ending, and so enters circulation.
The power control circuit of wide frequency ranges of the present invention adopts triode to coordinate inductance L1, and the frequency of power supply is controlled
System, can get the power supply of different frequencies by the parameter changing inductance L, and adjustable range is larger, and circuit structure is simple, cost
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, electric capacity C1, inductance L1, diode D1
With diode D2 it is characterised in that connecting triode Q1 emitter stage, resistance R9, resistance R6 and electricity are distinguished in described resistance R1 one end
Source VCC, the resistance R6 other end connects resistance R3 and diode D1 negative pole respectively, and the resistance R3 other end connects resistance R5, electricity respectively
Resistance R4 and triode Q2 base stage, resistance R5 other end connecting triode Q1 colelctor electrode, diode D2 negative pole and inductance L1 respectively, three
Pole pipe Q1 base stage connects the resistance R1 other end and resistance R2, resistance R2 other end connecting triode Q2 colelctor electrode, triode respectively
Q2 emitter stage connects resistance R10 and triode Q3 emitter stage respectively, and triode Q3 base stage connects resistance R8 and resistance R7 respectively, electricity
The resistance R7 other end connects the inductance L1 other end, electric capacity C1 and output end vo respectively, and it is another that the electric capacity C1 other end connects resistance R8 respectively
One end, the resistance R10 other end, the resistance R4 other end and diode D1 positive pole are simultaneously grounded, and described power supply VCC voltage is 24V, described
Triode Q2 and triode Q3 is NPN triode.
2. the power control circuit of wide frequency ranges according to claim 1 is it is characterised in that described triode Q1 is
PNP triode.
3. the power control circuit of wide frequency ranges according to claim 1 is it is characterised in that described diode D1 is steady
Pressure 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 true CN106452071A (en) | 2017-02-22 |
| CN106452071B CN106452071B (en) | 2019-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN106452071B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
|---|---|
| CN106452071B (en) | 2019-03-22 |
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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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