CN103427683A - Voltage-stabilizing power circuit - Google Patents
Voltage-stabilizing power circuit Download PDFInfo
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- CN103427683A CN103427683A CN2013103846351A CN201310384635A CN103427683A CN 103427683 A CN103427683 A CN 103427683A CN 2013103846351 A CN2013103846351 A CN 2013103846351A CN 201310384635 A CN201310384635 A CN 201310384635A CN 103427683 A CN103427683 A CN 103427683A
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Abstract
The invention discloses a voltage-stabilizing power circuit. The voltage-stabilizing power circuit comprises a transformer, diodes, capacitors, resistors, an operational amplifier and triodes. The voltage-stabilizing power circuit is simple in structure, stable in voltage output, low in temperature coefficient, good in temperature stability, low in noise and applicable to low-voltage power sources.
Description
Technical field
The present invention relates to a kind of power circuit, particularly a kind of voltage-stabilized power supply circuit.
Background technology
A series of reasons such as design imperfection and amount of power supply deficiency all easily cause the terminal temperature difference brownout at present, and the end of a thread user is the frequent higher phenomenon of voltage.Unsettled voltage can cause mortal injury to power consumption equipment, and impact is produced, and quality is unstable waits many-sided loss.Accelerate simultaneously easily motor device aging, affect useful life, even burn machine parts.These things people face the puzzlement needed repairing or the problem that will update the equipment in a short time, the waste resource, and security incident even occurs in severe patient, causes immeasurable loss.
Therefore need a kind of new technical scheme to solve the problems referred to above.
Summary of the invention
Goal of the invention: the problem and shortage existed for above-mentioned prior art, the purpose of this invention is to provide a kind of voltage-stabilized power supply circuit, its voltage stability is high, and noise is low.
Technical scheme: the technical solution used in the present invention is a kind of voltage-stabilized power supply circuit, this circuit comprises transformer, diode, electric capacity, resistance, amplifier and triode, the negative pole of the first diode is connected with the positive pole of the second diode, the negative pole of the 3rd diode is connected with the positive pole of the 4th diode, one end of the secondary coil of transformer is connected with the negative pole of the first diode, its other end is connected with the negative pole of the 3rd diode, the positive pole of the first diode is connected with the positive pole of the 3rd diode, the negative pole of the second diode is connected with the negative pole of the 4th diode, one end of the first electric capacity is connected with the negative pole of the 4th diode, its other end is connected with the positive pole of the 3rd diode, the negative pole of the 5th diode is connected with the negative pole of the 4th diode, its positive pole is connected with the base stage of the first triode, the first resistance and the second Capacitance parallel connection, the one end is connected with the base stage of the first triode, its other end is connected with the positive pole of the 3rd diode, the emitter of the first triode is connected with the output of amplifier, the collector electrode of the first triode is connected with the negative pole of the 5th diode by the second resistance, the base stage of the second triode is connected with the emitter of the first triode, this base stage is connected with the positive pole of the 3rd diode by the 3rd electric capacity, the collector electrode of the second triode is connected with the negative pole of the 5th diode, the emitter of the second triode is connected with the base stage of the 3rd triode, the collector electrode of the 3rd triode is connected with the negative pole of the 5th diode, its emitter is connected with the 3rd resistance by the 7th diode, the negative input of the other end access amplifier of described the 3rd resistance, one end of the 3rd resistance is connected with an end of the 4th resistance, the electrode input end of the other end access amplifier of described the 4th resistance, the negative pole of the 6th diode is connected with the negative input of amplifier, its positive pole is connected with the positive pole of the 3rd diode, one end of described the 5th resistance is connected with the electrode input end of amplifier, its other end is connected with the positive pole of the 6th diode.。
Preferably, the 5th diode and the 6th diode are voltage stabilizing didoe.
Preferably, this circuit also comprises the 6th resistance, and an end of the 6th resistance is connected with the negative pole of the 7th diode, and its other end is connected with the positive pole of the 6th diode.
Beneficial effect: compared with prior art, its advantage is that circuit structure of the present invention is simple in the present invention, and Voltage-output is stable, and temperature coefficient is little, and temperature stability is good, and noise is low, is applicable in the power supply of low-voltage.
The accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Embodiment
As shown in Figure 1, this circuit comprises transformer T1, diode, electric capacity, resistance, amplifier U1 and triode, the negative pole of the first diode D1 is connected with the positive pole of the second diode D2, the negative pole of the 3rd diode D3 is connected with the positive pole of the 4th diode D4, one end of the secondary coil of transformer T1 is connected with the negative pole of the first diode D1, its other end is connected with the negative pole of the 3rd diode D3, the positive pole of the first diode D1 is connected with the positive pole of the 3rd diode D3, the negative pole of the second diode D2 is connected with the negative pole of the 4th diode D4, one end of the first capacitor C 1 is connected with the negative pole of the 4th diode D4, its other end is connected with the positive pole of the 3rd diode D3, the negative pole of the 5th diode D5 is connected with the negative pole of the 4th diode D4, its positive pole is connected with the base stage of the first triode Q1, the first resistance R 1 and the second capacitor C 2 parallel connections, the one end is connected with the base stage of the first triode Q1, its other end is connected with the positive pole of the 3rd diode D3, the emitter of the first triode Q1 is connected with the output of amplifier U1, the collector electrode of the first triode Q1 is connected with the negative pole of the 5th diode D5 by the second resistance R 2, the base stage of the second triode Q2 is connected with the emitter of the first triode Q1, this base stage is connected with the positive pole of the 3rd diode D3 by the 3rd capacitor C 3, the collector electrode of the second triode Q2 is connected with the negative pole of the 5th diode D5, the emitter of the second triode Q2 is connected with the base stage of the 3rd triode Q3, the collector electrode of the 3rd triode Q3 is connected with the negative pole of the 5th diode D5, its emitter is connected with the 3rd resistance R 3 by the 7th diode D7, the negative input of the other end access amplifier U1 of the 3rd resistance R 3, one end of the 3rd resistance R 3 is connected with an end of the 4th resistance R 4, the electrode input end of the other end access amplifier U1 of the 4th resistance R 4, the negative pole of the 6th diode D6 is connected with the negative input of amplifier U1, its positive pole is connected with the positive pole of the 3rd diode D3, one end of the 5th resistance R 5 is connected with the electrode input end of amplifier U1, its other end is connected with the positive pole of the 6th diode D6.
The 5th diode D5 and the 6th diode D6 are voltage stabilizing didoe, and this circuit also comprises that an end of the 6th resistance R 6, the six resistance R 6 is connected with the negative pole of the 7th diode D7, and its other end is connected with the positive pole of the 6th diode D6.
The start-up circuit that the first triode Q1, the 5th diode D5 and the second resistance R 2 are stabilized voltage power supply in this circuit, when input voltage is certain value, and during higher than the burning voltage of the 5th diode D5, the voltage-stabiliser tube both end voltage makes the first triode Q1 conducting, and whole circuit enters normal operating conditions.
Circuit structure of the present invention is simple, the reference voltage stable output, and temperature coefficient is little, and temperature stability is good, and noise is low, is applicable in the power supply of low-voltage.
Claims (3)
1. a voltage-stabilized power supply circuit, it is characterized in that: this circuit comprises transformer (T1), diode, electric capacity, resistance, amplifier (U1) and triode, the negative pole of described the first diode (D1) is connected with the positive pole of the second diode (D2), the negative pole of described the 3rd diode (D3) is connected with the positive pole of the 4th diode (D4), one end of the secondary coil of described transformer (T1) is connected with the negative pole of the first diode (D1), its other end is connected with the negative pole of the 3rd diode (D3), the positive pole of the first diode (D1) is connected with the positive pole of the 3rd diode (D3), the negative pole of the second diode (D2) is connected with the negative pole of the 4th diode (D4), one end of described the first electric capacity (C1) is connected with the negative pole of the 4th diode (D4), its other end is connected with the positive pole of the 3rd diode (D3), the negative pole of the 5th diode (D5) is connected with the negative pole of the 4th diode (D4), its positive pole is connected with the base stage of the first triode (Q1), the first resistance (R1) and the second electric capacity (C2) parallel connection, the one end is connected with the base stage of the first triode (Q1), its other end is connected with the positive pole of the 3rd diode (D3), the emitter of described the first triode (Q1) is connected with the output of amplifier (U1), the collector electrode of the first triode (Q1) is connected with the negative pole of the 5th diode (D5) by the second resistance (R2), the base stage of described the second triode (Q2) is connected with the emitter of the first triode (Q1), this base stage is connected with the positive pole of the 3rd diode (D3) by the 3rd electric capacity (C3), the collector electrode of described the second triode (Q2) is connected with the negative pole of the 5th diode (D5), the emitter of the second triode (Q2) is connected with the base stage of the 3rd triode (Q3), the collector electrode of the 3rd triode (Q3) is connected with the negative pole of the 5th diode (D5), its emitter is connected with the 3rd resistance (R3) by the 7th diode (D7), the negative input of the other end access amplifier (U1) of described the 3rd resistance (R3), one end of the 3rd resistance (R3) is connected with an end of the 4th resistance (R4), the electrode input end of the other end access amplifier (U1) of described the 4th resistance (R4), the negative pole of described the 6th diode (D6) is connected with the negative input of amplifier (U1), its positive pole is connected with the positive pole of the 3rd diode (D3), one end of described the 5th resistance (R5) is connected with the electrode input end of amplifier (U1), its other end is connected with the positive pole of the 6th diode (D6).
2. a kind of voltage-stabilized power supply circuit according to claim 1, it is characterized in that: described the 5th diode (D5) and the 6th diode (D6) are voltage stabilizing didoe.
3. a kind of voltage-stabilized power supply circuit according to claim 1, it is characterized in that: this circuit also comprises the 6th resistance (R6), one end of described the 6th resistance (R6) is connected with the negative pole of the 7th diode (D7), and its other end is connected with the positive pole of the 6th diode (D6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103846351A CN103427683A (en) | 2013-08-30 | 2013-08-30 | Voltage-stabilizing power circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103846351A CN103427683A (en) | 2013-08-30 | 2013-08-30 | Voltage-stabilizing power circuit |
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| CN103427683A true CN103427683A (en) | 2013-12-04 |
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| CN2013103846351A Pending CN103427683A (en) | 2013-08-30 | 2013-08-30 | Voltage-stabilizing power circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715893A (en) * | 2014-01-10 | 2014-04-09 | 王志 | Non-isolated step-down switch voltage-stabilized power supply |
| CN110017233A (en) * | 2019-05-17 | 2019-07-16 | 杭叉集团股份有限公司 | A kind of preheating timer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801860A (en) * | 1987-02-23 | 1989-01-31 | Sgs-Thomson Microelectronics S.P.A. | Voltage stabilizer with a minimal voltage drop designed to withstand high voltage transients |
| US5510697A (en) * | 1993-06-02 | 1996-04-23 | Vtech Communications,Inc. | Low drop-out voltage regulator apparatus |
| CN201017251Y (en) * | 2007-04-04 | 2008-02-06 | 张亦翔 | Electric capacity voltage dividing type DC voltage-stabilized power supply |
| CN102929320A (en) * | 2012-11-20 | 2013-02-13 | 中国航天科技集团公司第五研究院第五一〇研究所 | High-precision DC constant-current source |
| CN103022982A (en) * | 2013-01-11 | 2013-04-03 | 浙江明烁电子科技有限公司 | Storage battery control circuit |
-
2013
- 2013-08-30 CN CN2013103846351A patent/CN103427683A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801860A (en) * | 1987-02-23 | 1989-01-31 | Sgs-Thomson Microelectronics S.P.A. | Voltage stabilizer with a minimal voltage drop designed to withstand high voltage transients |
| US5510697A (en) * | 1993-06-02 | 1996-04-23 | Vtech Communications,Inc. | Low drop-out voltage regulator apparatus |
| CN201017251Y (en) * | 2007-04-04 | 2008-02-06 | 张亦翔 | Electric capacity voltage dividing type DC voltage-stabilized power supply |
| CN102929320A (en) * | 2012-11-20 | 2013-02-13 | 中国航天科技集团公司第五研究院第五一〇研究所 | High-precision DC constant-current source |
| CN103022982A (en) * | 2013-01-11 | 2013-04-03 | 浙江明烁电子科技有限公司 | Storage battery control circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715893A (en) * | 2014-01-10 | 2014-04-09 | 王志 | Non-isolated step-down switch voltage-stabilized power supply |
| CN110017233A (en) * | 2019-05-17 | 2019-07-16 | 杭叉集团股份有限公司 | A kind of preheating timer |
| CN110017233B (en) * | 2019-05-17 | 2024-02-27 | 杭叉集团股份有限公司 | Preheating timer |
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Application publication date: 20131204 |