CN202424512U - Parallel voltage stabilizing circuit for small-power power supply circuit - Google Patents
Parallel voltage stabilizing circuit for small-power power supply circuit Download PDFInfo
- Publication number
- CN202424512U CN202424512U CN2011205251991U CN201120525199U CN202424512U CN 202424512 U CN202424512 U CN 202424512U CN 2011205251991 U CN2011205251991 U CN 2011205251991U CN 201120525199 U CN201120525199 U CN 201120525199U CN 202424512 U CN202424512 U CN 202424512U
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- Prior art keywords
- voltage stabilizing
- circuit
- small
- bridge circuit
- model
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- Expired - Fee Related
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Abstract
The utility model discloses a parallel voltage stabilizing circuit for a small-power power supply circuit. The parallel voltage stabilizing circuit comprises a voltage stabilizing bridge circuit including second, third, fourth and fifth diodes, wherein one output end of the voltage stabilizing bridge circuit is connected with a fixed pin end of a first adjustable resistor; the other fixed pin end of the first adjustable resistor is led out as an output end of the parallel voltage stabilizing circuit; the other output end of the voltage stabilizing bridge circuit is grounded; and an electrolytic capacitor, a voltage stabilizing tube and a second adjustable resistor are also respectively bridged between two output ends of the voltage stabilizing bridge circuit. The parallel voltage stabilizing circuit for the small-power power supply circuit, disclosed by the utility model, has the advantages of simple structure, stable and reliable performance as well as promotion and application values.
Description
Technical field
The utility model belongs to a kind of voltage stabilizing circuit, concrete relates to a kind of shunt 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.
The utility model content
For overcoming the deficiency of prior art, the purpose of the utility model is to provide a kind of circuit structure simple, the shunt 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 utility model is realized through following technical scheme:
A kind of shunt 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 a fixing leads ends of first adjustable resistance; Another of said first adjustable resistance fixedly leads ends drawn the output end as shunt regulating circuit; Another output head grounding of said voltage stabilizing bridge circuit, between two outputs of said voltage stabilizing bridge circuit also respectively cross-over connection one electrochemical capacitor, a voltage-stabiliser tube and second adjustable resistance are arranged.
Compared with prior art, the utlity model has following beneficial effect:
The circuit elements device that this practical new shunt 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 the utility model technical scheme, in order more to know the technological means of understanding the utility model, and can implement according to the content of specification, below with the preferred embodiment of the utility model and conjunction with figs. specify as after.The embodiment of the utility model is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Accompanying drawing described herein is used to provide the further understanding to the utility model, constitutes the application's a part, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 shows the circuit theory diagrams of an embodiment of the utility model.
Embodiment
Below with reference to accompanying drawing and combine embodiment, specify the utility model.
Referring to shown in Figure 1; A kind of shunt 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 connect the fixing leads ends of the first adjustable resistance Rp1, and another of the said first adjustable resistance Rp1 fixedly leads ends drawn the output end as shunt regulating circuit; Another output head grounding of said voltage stabilizing bridge circuit, between two outputs of said voltage stabilizing bridge circuit also respectively cross-over connection one electrochemical capacitor C1, a voltage-stabiliser tube VD and the second adjustable resistance Rp1 are arranged.
Preferably, said voltage stabilizing bridge circuit and the said first adjustable resistance Rp1 between also be connected with second resistance R 2.
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; By electrochemical capacitor C1 filtering,, flow to voltage-stabiliser tube VD voltage stabilizing output DC source later on again through second resistance R 2 and the first adjustable resistance Rp1 current limliting.
Power supply through voltage-stabiliser tube VD output after through the 3rd resistance R 3, the second adjustable resistance Rp2, the 4th resistance R 4 dividing potential drops by the output end output of shunt regulating circuit.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (3)
1. shunt 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 a fixing leads ends of first adjustable resistance (Rp1); Another of said first adjustable resistance (Rp1) fixedly leads ends drawn the output end as shunt regulating circuit, another output head grounding of said voltage stabilizing bridge circuit, between two outputs of said voltage stabilizing bridge circuit also respectively cross-over connection one electrochemical capacitor (C1), a voltage-stabiliser tube (VD) and second adjustable resistance (Rp1) are arranged.
2. the shunt regulating circuit that is used for small-power type power circuit according to claim 1 is characterized in that: also be connected with second resistance (R2) between first adjustable resistance said voltage stabilizing bridge circuit and said (Rp1).
3. the shunt regulating circuit that is used for small-power type power circuit according to claim 1 and 2 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 |
|---|---|---|---|
| CN2011205251991U CN202424512U (en) | 2011-12-15 | 2011-12-15 | Parallel voltage stabilizing circuit for small-power power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205251991U CN202424512U (en) | 2011-12-15 | 2011-12-15 | Parallel voltage stabilizing circuit for small-power power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202424512U true CN202424512U (en) | 2012-09-05 |
Family
ID=46749236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205251991U Expired - Fee Related CN202424512U (en) | 2011-12-15 | 2011-12-15 | Parallel voltage stabilizing circuit for small-power power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202424512U (en) |
-
2011
- 2011-12-15 CN CN2011205251991U patent/CN202424512U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20121215 |