CN203287810U - Serial-connection negative feedback voltage stabilizing power circuit - Google Patents
Serial-connection negative feedback voltage stabilizing power circuit Download PDFInfo
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- CN203287810U CN203287810U CN2013203554414U CN201320355441U CN203287810U CN 203287810 U CN203287810 U CN 203287810U CN 2013203554414 U CN2013203554414 U CN 2013203554414U CN 201320355441 U CN201320355441 U CN 201320355441U CN 203287810 U CN203287810 U CN 203287810U
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- triode
- resistance
- operational amplifier
- emitter
- negative feedback
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Abstract
The utility model discloses a serial-connection negative feedback voltage stabilizing power circuit which mainly solves the problems of being complex in anti-interference power supply structure and high in cost in the prior art. The serial-connection negative feedback voltage stabilizing power circuit is characterized by comprising a triode Q1, a collector electrode, a triode Q2 connected with a base electrode of the triode Q1, a resistor R2 connected between an emitting electrode of the triode Q1 and an emitting electrode of the triode Q2, a resistor R1 connected between a collector electrode of the triode Q1 and a collector electrode of the triode Q2, a slide rheostat R4, a resistor R6, a detector circuit and a filtering circuit. The slide end of the slide rheostat R4 is connected with a base electrode of the triode Q2, the resistor R6 is connected between the emitting electrode of the triode Q1 and the emitting electrode of the triode Q2, the detector circuit is connected with the resistor R6, and the filtering circuit is connected with the detector circuit. The serial-connection negative feedback voltage stabilizing power circuit has good anti-interference capacity, is low in cost and small in size and has high practical value and popularizing value.
Description
Technical field
The utility model relates to a kind of power supply, specifically, relates to a kind of series connection negative feedback voltage-stabilized power supply circuit.
Background technology
Power supply is the indispensable devices of most of electrical equipments, in order to make each electrical equipment can normally move the stability that need to guarantee as much as possible Power supply, thereby need to use a lot of anti-interference equipments, can cause like this power volume larger, cost is higher, is unfavorable for some mini-plant uses cheaply.
The utility model content
The purpose of this utility model is to provide a kind of series connection negative feedback voltage-stabilized power supply circuit, mainly solves the high precision anti-jamming power-supply complex structure that exists in prior art, the problem that cost is higher.
To achieve these goals, the technical solution adopted in the utility model is as follows:
series connection negative feedback voltage-stabilized power supply circuit, comprise triode Q1, the triode Q2 that collector is connected with the base stage of triode Q1, be connected in the resistance R 2 between the emitter of the emitter of triode Q1 and triode Q2, be connected in the resistance R 1 between the collector of the collector of triode Q1 and triode Q2, the slide rheostat R4 that sliding end is connected with the base stage of triode Q2, one end is connected in one of them stiff end of slide rheostat R4, the other end is connected in the resistance R 3 of the emitter of triode Q1, one end is connected in another stiff end of slide rheostat R4, the other end is connected in the resistance R 5 of the emitter of triode Q2, be connected in the resistance R 6 between the emitter of the emitter of triode Q1 and triode Q2, the detecting circuit that is connected with resistance R 6, the resistance R 11 of in-phase input end by being connected successively, resistance R 9, the operational amplifier T2 that capacitor C 1 and resistance R 8 are connected with detecting circuit, one end is connected between resistance R 9 and resistance R 11, the other end is connected in the capacitor C 2 of the output terminal of operational amplifier T2, one end is connected between capacitor C 1 and resistance R 9, the resistance R 10 of other end ground connection, be connected in in-phase input end and the capacitor C between ground 3 of operational amplifier T2.
Specifically, described detecting circuit comprises that output terminal passes through the operational amplifier T1 that diode D2 is connected with an end of resistance R 6, inverting input is connected with the other end of resistance R 6 by resistance R 7, be connected in the output terminal of operational amplifier T1 and the diode D1 between inverting input, the in-phase input end ground connection of described operational amplifier T1, described resistance R 8 is connected with the inverting input of operational amplifier T1.
Compared with prior art, the utlity model has following beneficial effect:
(1) the utility model is designed to one with filtering circuit, power circuit, detecting circuit, and according to actual conditions, has selected the components and parts that cost is minimum, effect is best to carry out circuit design, accords with the demands of the market.
(2) in the utility model, adopt and both to have had circuit that high pass filter function also has the low-pass filtering function as filtering circuit, circuit structure is very ingenious, and the noise reduction effect is fairly obvious, realistic demand.
(3) the utility model is simple in structure, uses less components and parts to realize anti-interference function, and with low cost, volume is small and exquisite, is fit to large-scale promotion application.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
as shown in Figure 1, the utility model discloses a kind of series connection negative feedback voltage-stabilized power supply circuit, comprise triode Q1, the triode Q2 that collector is connected with the base stage of triode Q1, be connected in the resistance R 2 between the emitter of the emitter of triode Q1 and triode Q2, be connected in the resistance R 1 between the collector of the collector of triode Q1 and triode Q2, the slide rheostat R4 that sliding end is connected with the base stage of triode Q2, one end is connected in one of them stiff end of slide rheostat R4, the other end is connected in the resistance R 3 of the emitter of triode Q1, one end is connected in another stiff end of slide rheostat R4, the other end is connected in the resistance R 5 of the emitter of triode Q2, be connected in the resistance R 6 between the emitter of the emitter of triode Q1 and triode Q2, the detecting circuit that is connected with resistance R 6, the resistance R 11 of in-phase input end by being connected successively, resistance R 9, the operational amplifier T2 that capacitor C 1 and resistance R 8 are connected with detecting circuit, one end is connected between resistance R 9 and resistance R 11, the other end is connected in the capacitor C 2 of the output terminal of operational amplifier T2, one end is connected between capacitor C 1 and resistance R 9, the resistance R 10 of other end ground connection, be connected in in-phase input end and the capacitor C between ground 3 of operational amplifier T2.
Specifically, described detecting circuit comprises that output terminal passes through the operational amplifier T1 that diode D2 is connected with an end of resistance R 6, inverting input is connected with the other end of resistance R 6 by resistance R 7, be connected in the output terminal of operational amplifier T1 and the diode D1 between inverting input, the in-phase input end ground connection of described operational amplifier T1, described resistance R 8 is connected with the inverting input of operational amplifier T1.
On the basis of foregoing circuit, the present embodiment also is connected with part auxiliary element and line, is used for guaranteeing the normal operation of circuit, and the use of these auxiliary elements belongs to the circuit application custom of industry universal, does not repeat them here.
, according to above-described embodiment, just can realize well the utility model.
Claims (2)
1. series connection negative feedback voltage-stabilized power supply circuit, it is characterized in that, comprise triode Q1, the triode Q2 that collector is connected with the base stage of triode Q1, be connected in the resistance R 2 between the emitter of the emitter of triode Q1 and triode Q2, be connected in the resistance R 1 between the collector of the collector of triode Q1 and triode Q2, the slide rheostat R4 that sliding end is connected with the base stage of triode Q2, one end is connected in one of them stiff end of slide rheostat R4, the other end is connected in the resistance R 3 of the emitter of triode Q1, one end is connected in another stiff end of slide rheostat R4, the other end is connected in the resistance R 5 of the emitter of triode Q2, be connected in the resistance R 6 between the emitter of the emitter of triode Q1 and triode Q2, the detecting circuit that is connected with resistance R 6, the resistance R 11 of in-phase input end by being connected successively, resistance R 9, the operational amplifier T2 that capacitor C 1 and resistance R 8 are connected with detecting circuit, one end is connected between resistance R 9 and resistance R 11, the other end is connected in the capacitor C 2 of the output terminal of operational amplifier T2, one end is connected between capacitor C 1 and resistance R 9, the resistance R 10 of other end ground connection, be connected in in-phase input end and the capacitor C between ground 3 of operational amplifier T2.
2. series connection negative feedback voltage-stabilized power supply circuit according to claim 1, it is characterized in that, described detecting circuit comprises that output terminal passes through the operational amplifier T1 that diode D2 is connected with an end of resistance R 6, inverting input is connected with the other end of resistance R 6 by resistance R 7, be connected in the output terminal of operational amplifier T1 and the diode D1 between inverting input, the in-phase input end ground connection of described operational amplifier T1, described resistance R 8 is connected with the inverting input of operational amplifier T1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203554414U CN203287810U (en) | 2013-06-20 | 2013-06-20 | Serial-connection negative feedback voltage stabilizing power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203554414U CN203287810U (en) | 2013-06-20 | 2013-06-20 | Serial-connection negative feedback voltage stabilizing power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203287810U true CN203287810U (en) | 2013-11-13 |
Family
ID=49544166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203554414U Expired - Lifetime CN203287810U (en) | 2013-06-20 | 2013-06-20 | Serial-connection negative feedback voltage stabilizing power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203287810U (en) |
-
2013
- 2013-06-20 CN CN2013203554414U patent/CN203287810U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU BOST INFORMATION TECHNOLOGY CO., LTD. Free format text: FORMER NAME: CHENGDU BOOST TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 610000, Sichuan, Chengdu province Wuhou District Wu Qing Road (Wuhou hi tech Innovation Center incubator) Patentee after: CHENGDU BOOST INFORMATION TECHNOLOGY Co.,Ltd. Address before: 610000, Sichuan, Chengdu province Wuhou District Wu Qing Road (Wuhou hi tech Innovation Center incubator) Patentee before: CHENGDU BOOST TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |