CN207117483U - Serial regulating circuit - Google Patents
Serial regulating circuit Download PDFInfo
- Publication number
- CN207117483U CN207117483U CN201720777733.5U CN201720777733U CN207117483U CN 207117483 U CN207117483 U CN 207117483U CN 201720777733 U CN201720777733 U CN 201720777733U CN 207117483 U CN207117483 U CN 207117483U
- Authority
- CN
- China
- Prior art keywords
- voltage
- difference amplifier
- regulating circuit
- adjustment pipe
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of serial regulating circuit, including adjustment pipe, difference amplifier, sampling resistor and the load being connected between input voltage Vi and output voltage Vo；Connection adjustment pipe between input voltage Vi and the output voltage Vo of output end, output end is connected with load, sampling resistor carries out all the way inputs of the sampled voltage Vf after sampling partial pressure as difference amplifier to the voltage of load, and the another way input of difference amplifier is default reference voltage Vr；The output end feedback control adjustment pipe of difference amplifier.Serial regulating circuit of the present utility model, circuit connection is simple, and cost is low；Output voltage is set to remain stable by negative feedback loop, voltage regulation result is good, small power consumption.
Description
Technical field
A kind of serial regulating circuit is the utility model is related to, belongs to field of circuit technology.
Background technology
Existing serial regulating circuit is a lot, but respectively has advantage and disadvantage, often in order to reach more preferable voltage regulation result needs
Using extremely complex circuit, it is bigger that complicated circuit causes power consumption again.
Utility model content
Technical problem to be solved in the utility model is the defects of overcoming prior art, there is provided a kind of series voltage stabilizing electricity
Road, voltage regulation result is good, small power consumption.
In order to solve the above technical problems, the utility model provides a kind of serial regulating circuit, it is characterized in that, including be connected to
Adjustment pipe, difference amplifier, sampling resistor and load between input voltage Vi and output voltage Vo；
Connection adjustment pipe between input voltage Vi and the output voltage Vo of output end, output end are connected with load, sampling electricity
All the way inputs of the sampled voltage Vf after sampling partial pressure is carried out to the voltage of load as difference amplifier is hindered, difference amplifier
Another way input is default reference voltage Vr；The output end feedback control adjustment pipe of difference amplifier.
Adjustment pipe uses triode.
The colelctor electrode of input voltage Vi input adjustment pipes, the emitter stage output for adjusting pipe is output voltage Vo.
Sampling resistor includes being connected on the first resistor and second resistance at load both ends, first resistor and second resistance partial pressure
All the way inputs of the sampled voltage Vf afterwards as difference amplifier.
The output end feedback link of difference amplifier to the base stage for adjusting pipe inputs.
A voltage amplification and DC level shift circuit are also connected between the base stage of difference amplifier and adjustment pipe.
The beneficial effect that the utility model is reached：
Serial regulating circuit of the present utility model, circuit connection is simple, and cost is low；Output voltage is made by negative feedback loop
Remain stable, voltage regulation result is good, small power consumption.
Brief description of the drawings
Fig. 1 is serial regulating circuit figure.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating this
The technical scheme of utility model, and the scope of protection of the utility model can not be limited with this.
As shown in figure 1, serial regulating circuit of the present utility model include being connected to input voltage Vi and output voltage Vo it
Between adjustment pipe, difference amplifier, sampling resistor R1, R2 and load RL.
Connection adjustment pipe V1 between input voltage Vi and output voltage Vo, wherein, input voltage Vi input adjustment pipes V1's
Colelctor electrode, adjustment pipe V1 emitter stage output is output voltage Vo.Output end is connected with load RL, and the both ends for loading RL are in series with
Sampling resistor R1, R2, all the way inputs of the sampled voltage Vf as difference amplifier after sampling resistor R1, R2 partial pressure, difference are put
The another way input of big device is default reference voltage Vr.The output end of difference amplifier is connected to adjustment pipe V1 base stage.
Sampled voltage Vf be compared with reference voltage Vr by difference amplifier after output signal as adjustment pipe V1
Base stage inputs, and forms a negative-feedback circuit.When loading RL changes, adjusted by negative feedback loop so that output voltage Vo is kept
It is stable.
Adjustment pipe V1 uses triode.
A voltage amplification and DC level displacement electricity can also be connected between difference amplifier and adjustment pipe V1 base stage
Road.Voltage amplification and DC level shift circuit using the existing circuit that can realize voltage amplification and DC level displacement i.e.
Can.
The same input voltage of circuit power consumption of the present utility model, the difference of output voltage have relation, and pressure difference is bigger, and power consumption is bigger,
Therefore power consumption can be reduced by adjusting pressure difference.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these change
Enter and deform and also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of serial regulating circuit, it is characterized in that, including be connected between input voltage Vi and output voltage Vo adjustment pipe,
Difference amplifier, sampling resistor and load；
Connection adjustment pipe, output end are connected with load, sampling resistor pair between input voltage Vi and the output voltage Vo of output end
The voltage of load carries out all the way inputs of the sampled voltage Vf after sampling partial pressure as difference amplifier, difference amplifier it is another
Road input is default reference voltage Vr；The output end feedback control adjustment pipe of difference amplifier.
2. serial regulating circuit according to claim 1, it is characterized in that, adjustment pipe uses triode.
3. serial regulating circuit according to claim 2, it is characterized in that, the colelctor electrode of input voltage Vi input adjustment pipes,
The emitter stage output for adjusting pipe is output voltage Vo.
4. serial regulating circuit according to claim 2, it is characterized in that, sampling resistor includes being connected on the of load both ends
Sampled voltage Vf after one resistance and second resistance, first resistor and second resistance partial pressure is as the defeated all the way of difference amplifier
Enter.
5. serial regulating circuit according to claim 2, it is characterized in that, the output end feedback link of difference amplifier is extremely adjusted
The base stage input of homogeneous tube.
6. serial regulating circuit according to claim 2, it is characterized in that, between the base stage of difference amplifier and adjustment pipe
It is also connected with a voltage amplification and DC level shift circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720777733.5U CN207117483U (en) | 2017-06-30 | 2017-06-30 | Serial regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720777733.5U CN207117483U (en) | 2017-06-30 | 2017-06-30 | Serial regulating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207117483U true CN207117483U (en) | 2018-03-16 |
Family
ID=61586263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720777733.5U Expired - Fee Related CN207117483U (en) | 2017-06-30 | 2017-06-30 | Serial regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207117483U (en) |
-
2017
- 2017-06-30 CN CN201720777733.5U patent/CN207117483U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20180630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |