CN102412743A - Series voltage-stabilizing circuit used for small power type power circuit - Google Patents
Series voltage-stabilizing circuit used for small power type power circuit Download PDFInfo
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- CN102412743A CN102412743A CN2011104198963A CN201110419896A CN102412743A CN 102412743 A CN102412743 A CN 102412743A CN 2011104198963 A CN2011104198963 A CN 2011104198963A CN 201110419896 A CN201110419896 A CN 201110419896A CN 102412743 A CN102412743 A CN 102412743A
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Abstract
The invention discloses a series voltage-stabilizing circuit used for a small power type power circuit. The series voltage-stabilizing circuit comprises a voltage-stabilizing bridge circuit, wherein one output end of the voltage-stabilizing bridge circuit is connected with a collector of a Darlington tube; an emitter of the Darlington tube is led out to serve as the output end of the series voltage-stabilizing circuit; the other output end of the voltage-stabilizing bridge circuit is earthed; a base of the Darlington tube is connected with the collector by a first resistor and is connected with the emitter by a second resistor; the base of the Darlington tube and the connection end of the first resistor are connected to the earth end of the voltage-stabilizing bridge circuit; the base of the Darlington tube and the connection end of the second resistor are connected to a collector of a third triode; an emitter of the third triode is connected to the earth end of the voltage-stabilizing bridge circuit by a voltage-stabilizing tube; a base of the third triode is connected with the sliding pin end of an adjustable resistor; and the adjustable resistor is connected at the two output ends of the voltage-stabilizing bridge circuit by two fixed pin ends of the adjustable resistor. The series voltage-stabilizing circuit has a simple structure, stable and reliable properties and popularization and application values.
Description
Technical field
The invention belongs to a kind of voltage stabilizing circuit, concrete relate to a kind of serial regulating circuit that is used for small-power type power circuit.
Background technology
Voltage stabilizing circuit still can keep the constant circuit of output voltage when input voltage, load, ambient temperature, circuit parameter etc. change.Sort circuit can provide the galvanic current source, and widely various electronic equipment adopts.
Various voltage stabilizing circuits are seen everywhere in the prior art; But most structure more complicated can be complete, and price is more expensive thereupon; Increased the cost that Voltage stabilizing module partly drops into so on the one hand; The complicated unsteadiness that also increases product quality of while structure, and the functional requirement to voltage stabilizing circuit is lower under the often more occasion, as long as meet single voltage stabilizing function.
Summary of the invention
For overcoming the deficiency of prior art, the object of the present invention is to provide a kind of circuit structure simple, the serial regulating circuit that is used for small-power type power circuit stable and reliable for performance.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention realizes through following technical scheme:
A kind of serial regulating circuit that is used for small-power type power circuit; It comprises by second, third, the voltage stabilizing bridge circuit that constitutes of the 4th, the 5th diode; An output of said voltage stabilizing bridge circuit connects the collector electrode of the Darlington pipe that is made up of first, second triode; The emitter of said Darlington pipe is drawn the output as serial regulating circuit; Another output head grounding of said voltage stabilizing bridge circuit; The base stage of said Darlington pipe connects its collector electrode through first resistance respectively, connects its emitter through second resistance, and the base stage of said Darlington pipe and the link of said first resistance are connected to the earth terminal of said voltage stabilizing bridge circuit; The base stage of said Darlington pipe is connected the collector electrode of the 3rd triode with the link of said second resistance; The emitter of said the 3rd triode is connected to the earth terminal of said voltage stabilizing bridge circuit through a voltage-stabiliser tube, and the base stage of said the 3rd triode connects the slip leads ends of an adjustable resistance, said adjustable resistance through its two fixedly leads ends be connected said voltage stabilizing bridge circuit two outputs.
Compared with prior art, the present invention has following beneficial effect:
The circuit elements device that this practical new serial regulating circuit that is used for small-power type power circuit uses is few, simple in structure, and stable and reliable for performance, has the value of promoting the use of.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.Embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the circuit theory diagrams of one embodiment of the invention.
Embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
Referring to shown in Figure 1, a kind of serial regulating circuit that is used for small-power type power circuit, it comprise by second, third, the 4th, the 5th diode D2; D3; D4, the voltage stabilizing bridge circuit that D5 constitutes, an output of said voltage stabilizing bridge circuit connects by first, second triode Q1; The collector electrode of the Darlington pipe that Q2 constitutes; The emitter of said Darlington pipe is drawn the output as serial regulating circuit, another output head grounding of said voltage stabilizing bridge circuit, and the base stage of said Darlington pipe connects its collector electrode through first resistance R 1 respectively; Connect its emitter through second resistance R 2; The base stage of said Darlington pipe and the link of said first resistance R 1 are connected to the earth terminal of said voltage stabilizing bridge circuit, and the base stage of said Darlington pipe is connected the collector electrode of the 3rd triode Q3 with the link of said second resistance R 2, and the emitter of said the 3rd triode Q3 is connected to the earth terminal of said voltage stabilizing bridge circuit through a voltage-stabiliser tube D1; The base stage of said the 3rd triode Q3 connects the slip leads ends of an adjustable resistance Rp1, said adjustable resistance Rp1 through its two fixedly leads ends be connected said voltage stabilizing bridge circuit two outputs.
Preferably, the link of said first resistance R 1 is connected to the earth terminal of said voltage stabilizing bridge circuit through the second electrochemical capacitor C2.
Preferably, be connected with the first electrochemical capacitor C1 and the 3rd electrochemical capacitor C3 between two outputs of said voltage stabilizing bridge circuit in turn.
Preferably, the said second adjustable resistance Rp1 two fixedly leads ends be connected between two outputs of said voltage stabilizing bridge circuit through the 3rd resistance R 3 and the 4th resistance R 4 respectively.
The operation principle of present embodiment is following:
AC power through by second, third, the 4th, the 5th diode D2, D3, D4; After the rectifier circuit rectification that D5 constitutes; Again by the first electrochemical capacitor C1 filtering, power supply flows to the base stage of Darlington transistor through first resistance R 1, again by the emitter output voltage of Darlington transistor.
The voltage that the output of Darlington transistor emitter is arranged; Carry the 3rd triode Q3 collector electrode through second resistance R 2; The base stage that limited again the 3rd resistance R 3 is carried the 3rd a triode Q3; When voltage was given the 3rd triode Q3 base stage through the 3rd resistance R 3, the first adjustable resistance Rp1 current limliting and the 4th resistance R 4 dividing potential drops, the 3rd triode Q3 base stage was a high level, makes the 3rd triode Q3 conducting.Power supply flows to the voltage-stabiliser tube D1 of the emitter of the 3rd triode Q3 through the collector electrode of the 3rd triode Q3.
Voltage stabilizing has the output of serial regulating circuit to export later on to voltage again through voltage-stabiliser tube D1.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. serial regulating circuit that is used for small-power type power circuit; It is characterized in that: comprise by second, third, the 4th, the 5th diode (D2; D3; D4, the voltage stabilizing bridge circuit that D5) constitutes, an output of said voltage stabilizing bridge circuit connects by first, second triode (Q1; The collector electrode of the Darlington pipe that Q2) constitutes; The emitter of said Darlington pipe is drawn the output as serial regulating circuit, another output head grounding of said voltage stabilizing bridge circuit, and the base stage of said Darlington pipe connects its collector electrode through first resistance (R1) respectively; (R2) connects its emitter through second resistance; The base stage of said Darlington pipe and the link of said first resistance (R1) are connected to the earth terminal of said voltage stabilizing bridge circuit, and the base stage of said Darlington pipe is connected the collector electrode of the 3rd triode (Q3) with the link of said second resistance (R2), and the emitter of said the 3rd triode (Q3) is connected to the earth terminal of said voltage stabilizing bridge circuit through a voltage-stabiliser tube (D1); The base stage of said the 3rd triode (Q3) connects the slip leads ends of an adjustable resistance (Rp1), said adjustable resistance (Rp1) through its two fixedly leads ends be connected said voltage stabilizing bridge circuit two outputs.
2. the serial regulating circuit that is used for small-power type power circuit according to claim 1 is characterized in that: the link of said first resistance (R1) is connected to the earth terminal of said voltage stabilizing bridge circuit through second electrochemical capacitor (C2).
3. the serial regulating circuit that is used for small-power type power circuit according to claim 1 is characterized in that: be connected with first electrochemical capacitor (C1) and the 3rd electrochemical capacitor (C3) between two outputs of said voltage stabilizing bridge circuit in turn.
4. according to claim 1 or the 2 or 3 described serial regulating circuits that are used for small-power type power circuit, it is characterized in that: said second adjustable resistance (Rp1) two fixedly leads ends is connected between two outputs of said voltage stabilizing bridge circuit through the 3rd resistance (R3) and the 4th resistance (R4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104198963A CN102412743A (en) | 2011-12-15 | 2011-12-15 | Series voltage-stabilizing circuit used for small power type power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104198963A CN102412743A (en) | 2011-12-15 | 2011-12-15 | Series voltage-stabilizing circuit used for small power type power circuit |
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| Publication Number | Publication Date |
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| CN102412743A true CN102412743A (en) | 2012-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104198963A Pending CN102412743A (en) | 2011-12-15 | 2011-12-15 | Series voltage-stabilizing circuit used for small power type power circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338560A (en) * | 2013-07-03 | 2013-10-02 | 深圳市通普科技有限公司 | LED supply circuit |
| CN104967340A (en) * | 2015-06-18 | 2015-10-07 | 周玉林 | Large-power adjustable DC regulated power supply |
| CN106767968A (en) * | 2017-01-13 | 2017-05-31 | 南安市永腾技术咨询有限公司 | A kind of intelligent micro measurement system based on VR technologies |
| WO2018196654A1 (en) * | 2017-04-27 | 2018-11-01 | Tridonic Gmbh & Co Kg | Ripple suppression circuit |
-
2011
- 2011-12-15 CN CN2011104198963A patent/CN102412743A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338560A (en) * | 2013-07-03 | 2013-10-02 | 深圳市通普科技有限公司 | LED supply circuit |
| CN103338560B (en) * | 2013-07-03 | 2015-06-24 | 深圳市通普科技有限公司 | LED supply circuit |
| CN104967340A (en) * | 2015-06-18 | 2015-10-07 | 周玉林 | Large-power adjustable DC regulated power supply |
| CN106767968A (en) * | 2017-01-13 | 2017-05-31 | 南安市永腾技术咨询有限公司 | A kind of intelligent micro measurement system based on VR technologies |
| WO2018196654A1 (en) * | 2017-04-27 | 2018-11-01 | Tridonic Gmbh & Co Kg | Ripple suppression circuit |
| GB2561934B (en) * | 2017-04-27 | 2022-02-23 | Tridonic Gmbh & Co Kg | Ripple suppression circuit |
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Application publication date: 20120411 |