CN106452072A - Voltage-stabilizing control circuit of direct-current power supply - Google Patents
Voltage-stabilizing control circuit of direct-current power supply Download PDFInfo
- Publication number
- CN106452072A CN106452072A CN201611053318.1A CN201611053318A CN106452072A CN 106452072 A CN106452072 A CN 106452072A CN 201611053318 A CN201611053318 A CN 201611053318A CN 106452072 A CN106452072 A CN 106452072A
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- Prior art keywords
- triode
- electric capacity
- resistance
- diode
- 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)
- Rectifiers (AREA)
Abstract
The invention discloses a voltage-stabilizing control circuit of a direct-current power supply. The voltage-stabilizing control circuit of the direct-current power supply comprises a triode V3, a diode D1, a potentiometer RP1 and a resistor R1, wherein one end of the resistor R1 is connected with a capacitor C1, a power supply VCC, an emitting electrode of a triode V1, an emitting electrode of a triode V2 and an emitting electrode of the triode V3; the other end of the capacitor C1 is connected with a collecting electrode of the triode V1, a resistor R2, and a base electrode of the triode V2; the other end of the resistor R1 is connected with a capacitor C2, a capacitor C3, a base electrode of the triode V1 and a collecting electrode of a triode V4; and a collecting electrode of the triode V2 is connected with a base electrode of the triode V3. The voltage-stabilizing control circuit of the direct-current power supply, provided by the invention, has a simple structure and few components, abandons a complex chip structure, only adopts basic electronic components, can perform automatic adjustment according to the condition of the voltage of the output end and enables output to tend to be stable, so the voltage-stabilizing control circuit of the direct-current power supply has the advantages of high anti-interference performance, control accuracy and low cost.
Description
Technical field
The present invention relates to a kind of power circuit, specifically a kind of DC power voltage stabilizing control circuit.
Background technology
With the continuous improvement of people's living standard, computer has become as a requisite part in life, especially
Be various desktop computers give people life, work bring great convenience, the CPU of computer-internal, video card, internal memory lamp are all
Require there is a constant voltage dc source that precision is higher, electric current is larger.The dc source species of existing market is various, its low and middle-end
How product is especially although low-end product has the advantage of price relative to high-end product, but quality is often as one wishes not to the utmost, common
All there is the defects such as single function, short life, interference free performance difference in power supply, although and high-end product reliable in quality, safety and stability,
But price is high also to allow people hang back.Therefore need to be improved.
Content of the invention
It is an object of the invention to provide a kind of DC power voltage stabilizing control circuit, to solve to propose in above-mentioned background technology
Problem.
For achieving the above object, the present invention provides following technical scheme：
A kind of DC power voltage stabilizing control circuit, including triode V3, diode D1, potentiometer RP1 and resistance R1, described resistance
One end of R1 connects electric capacity C1, power supply VCC, the transmitting of the emitter stage of triode V1, the emitter stage of triode V2 and triode V3
Pole, the base stage of the colelctor electrode, resistance R2 and triode V2 of other end connecting triode V1 of electric capacity C1, the other end of resistance R1 is even
Meet electric capacity C2, the colelctor electrode of electric capacity C3, the base stage of triode V1 and triode V4, the colelctor electrode connecting triode V3 of triode V2
Base stage, the colelctor electrode of triode V3 connects resistance R3, resistance R5, the negative electrode of diode D1 and inductance L1, and electric capacity C3's is another
End connects the other end of resistance R3, and the other end of electric capacity C2 connects the other end of resistance R2, the anode of diode D1, diode D2
A fixing end triode V4 of anode, electric capacity C4, electric capacity C6 and potentiometer RP1 emitter stage connect diode D2 negative electrode
With resistance R4, the other end of resistance R4 connect electric capacity C5, the other end of electric capacity C6, the other end of inductance L1, potentiometer RP1 another
One fixing end and output end OUT, the base stage of other end connecting triode V4 of electric capacity C5 and the sliding end of potentiometer RP1.
Preferred version as the present invention：Described diode D1 is fly-wheel diode.
Preferred version as the present invention：Described triode V1-V4 is NPN type triode.
Preferred version as the present invention：Described diode D2 is Zener diode.
Preferred version as the present invention：Described power supply VCC is the 24V direct current after civil power step-down rectifier.
Compared with prior art, the invention has the beneficial effects as follows：DC power voltage stabilizing control circuit structure of the present invention is simple,
Components and parts are few, and it has abandoned the chip structure of complexity, is only formed using basic electronic component, can be according to output end voltage
Situation automatically adjusts, and so that output is tended towards stability, and therefore has the advantages that strong interference immunity, controls accurate and low cost.
Brief description
Fig. 1 is the circuit diagram of DC power voltage stabilizing control circuit.
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 description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, in the embodiment of the present invention, a kind of DC power voltage stabilizing control circuit, including triode V3, diode
D1, potentiometer RP1 and resistance R1, one end of described resistance R1 connects electric capacity C1, power supply VCC, the emitter stage of triode V1, three poles
The emitter stage of pipe V2 and the emitter stage of triode V3, the colelctor electrode of other end connecting triode V1 of electric capacity C1, resistance R2 and three
The base stage of pole pipe V2, the other end of resistance R1 connects electric capacity C2, the current collection of electric capacity C3, the base stage of triode V1 and triode V4
Pole, the base stage of the colelctor electrode connecting triode V3 of triode V2, the colelctor electrode of triode V3 connects resistance R3, resistance R5, two poles
The negative electrode of pipe D1 and inductance L1, the other end of electric capacity C3 connects the other end of resistance R3, and the other end of electric capacity C2 connects resistance R2
The other end, the anode of diode D1, a fixing end three of the anode of diode D2, electric capacity C4, electric capacity C6 and potentiometer RP1
The emitter stage of pole pipe V4 connects negative electrode and the resistance R4 of diode D2, the other end of resistance R4 connect electric capacity C5, electric capacity C6 another
One end, the other end of inductance L1, another fixing end of potentiometer RP1 and output end OUT, the other end of electric capacity C5 connects three poles
The base stage of pipe V4 and the sliding end of potentiometer RP1.
Diode D1 is fly-wheel diode.Triode V1-V4 is NPN type triode.Diode D2 is voltage stabilizing two pole
Pipe.Power supply VCC is the 24V direct current after civil power step-down rectifier
The operation principle of the present invention is：Power supply VCC is added on inductance L1 after triode V3.Output current is through energy storage inductor
During L1, left just, the right negative induced potential of generation.Now, V3 pipe emitter stage is in high potential, and sustained diode 1 is ended, output
Electric current supply load, charges to electric capacity C6 simultaneously, and when voltage raises to a certain extent, error amplifier V4 starts working.V4
After work, the output current of switch adjustment pipe charges to capacitor C3, the voltage on capacitor C3 be upper just, lower negative.Work as C3
When charging to a certain degree, transistor V1 saturation conduction.Its tube voltage drop Uce1 very little.V2 base potential raises, and forces compound opening
Close pipe V2, V3 cut-off.At this moment, the electric current on energy storage inductor has been raised to maximum.But the shutoff due to switching tube, will make on L1
Electric current reduce, the induced potential that produces on L1 of electric current of this change be the left negative, right side just, electric current reduction will be stoped, simultaneously
Sustained diode 1 is made to turn on, the energy on L1 will pass through D1 and constitutes path with load, is allowed to continue to power to the load.When L1 to
When the voltage that load provides is less than C6 both end voltage, C6 just supplementary power, to supplement the deficiency that L1 discharges electric energy, make output voltage
Remain smooth direct current.Once switching tube V3 enters cut-off state, C3 just switchs to discharge condition from charged state, and then develops
To reverse charging state, negative on the voltage on C3, lower just.When reverse charging reaches to a certain degree, V1 is due to its base potential
Raise and end.Combination switch pipe turns on because V2 base stage regains electronegative potential, and just so circulation is gone down for self-oscillation.Its
Frequency of oscillation is mainly determined by resistance R3 and electric capacity C3.When so that output voltage is increased for some reason, sampled circuit gives three
The current potential that pole pipe V4 base stage provides raises so as to collector current increases, and tube voltage drop Uce4 reduces, thus accelerating C3 is filled
Electricity.C3 both end voltage raises rapidly, and V4 collector potential reduces rapidly, makes pulse width modulation pipe D2 switch to lead from cut-off quickly
Logical, and increased ON time.And combination switch pipe V2, V3 then correspondingly extend deadline, make the pulse width of output
Narrow, make the output voltage of rising drop again.Conversely, when output voltage declines, its regulation process is identical, direction
On the contrary, the output voltage declining is risen again, thus keeping stablizing of output voltage.
Claims (3)
1. a kind of DC power voltage stabilizing control circuit, including triode V3, diode D1, potentiometer RP1 and resistance R1, its feature
It is, one end of described resistance R1 connects electric capacity C1, power supply VCC, the emitter stage of triode V1, the emitter stage of triode V2 and three
The emitter stage of pole pipe V3, the base stage of the colelctor electrode, resistance R2 and triode V2 of other end connecting triode V1 of electric capacity C1, resistance
The other end of R1 connects electric capacity C2, the colelctor electrode of electric capacity C3, the base stage of triode V1 and triode V4, the colelctor electrode of triode V2
The base stage of connecting triode V3, the colelctor electrode of triode V3 connects resistance R3, resistance R5, the negative electrode of diode D1 and inductance L1,
The other end of electric capacity C3 connects the other end of resistance R3, and the other end of electric capacity C2 connects the other end of resistance R2, diode D1
The emitter stage of one fixing end triode V4 of anode, the anode of diode D2, electric capacity C4, electric capacity C6 and potentiometer RP1 connects
The negative electrode of diode D2 and resistance R4, the other end of resistance R4 connect electric capacity C5, the other end of electric capacity C6, inductance L1 another
End, another fixing end of potentiometer RP1 and output end OUT, the base stage of other end connecting triode V4 of electric capacity C5 and current potential
The sliding end of device RP1, described diode D1 is fly-wheel diode, and described triode V1-V4 is NPN type triode.
2. DC power voltage stabilizing control circuit according to claim 1 is it is characterised in that described diode D2 is voltage stabilizing
Diode.
3. DC power voltage stabilizing control circuit according to claim 1 is it is characterised in that described power supply VCC is through city
24V direct current after electric step-down rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053318.1A CN106452072A (en) | 2016-11-24 | 2016-11-24 | Voltage-stabilizing control circuit of direct-current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053318.1A CN106452072A (en) | 2016-11-24 | 2016-11-24 | Voltage-stabilizing control circuit of direct-current power supply |
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| Publication Number | Publication Date |
|---|---|
| CN106452072A true CN106452072A (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611053318.1A Pending CN106452072A (en) | 2016-11-24 | 2016-11-24 | Voltage-stabilizing control circuit of direct-current power supply |
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| CN (1) | CN106452072A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171555A (en) * | 2017-07-25 | 2017-09-15 | 西安电子科技大学 | A kind of mu balanced circuit applied to high tension voltage IC interior |
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| CN204012860U (en) * | 2014-08-23 | 2014-12-10 | 广东梅雁吉祥水电股份有限公司 | A kind of efficient voltage stabilizing charging circuit |
| CN204696949U (en) * | 2015-07-02 | 2015-10-07 | 重庆三峡学院 | A kind of stabilized voltage power supply |
| CN204906186U (en) * | 2015-09-10 | 2015-12-23 | 衢州市沃思电子技术有限公司 | Switching power supply |
| CN205039703U (en) * | 2015-10-29 | 2016-02-17 | 西安外事学院 | Intelligence step -down formula switching power supply |
| CN205160373U (en) * | 2015-11-05 | 2016-04-13 | 重庆电子工程职业学院 | A intelligent steady voltage switching power supply for portable electrocardio appearance |
| CN205490121U (en) * | 2016-02-19 | 2016-08-17 | 国家电网公司 | Take protect function's electrical source controller |
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2016
- 2016-11-24 CN CN201611053318.1A patent/CN106452072A/en active Pending
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| CN204012860U (en) * | 2014-08-23 | 2014-12-10 | 广东梅雁吉祥水电股份有限公司 | A kind of efficient voltage stabilizing charging circuit |
| CN204696949U (en) * | 2015-07-02 | 2015-10-07 | 重庆三峡学院 | A kind of stabilized voltage power supply |
| CN204906186U (en) * | 2015-09-10 | 2015-12-23 | 衢州市沃思电子技术有限公司 | Switching power supply |
| CN205039703U (en) * | 2015-10-29 | 2016-02-17 | 西安外事学院 | Intelligence step -down formula switching power supply |
| CN205160373U (en) * | 2015-11-05 | 2016-04-13 | 重庆电子工程职业学院 | A intelligent steady voltage switching power supply for portable electrocardio appearance |
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| CN107171555A (en) * | 2017-07-25 | 2017-09-15 | 西安电子科技大学 | A kind of mu balanced circuit applied to high tension voltage IC interior |
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Application publication date: 20170222 |