CN205490144U - Constant voltage power supply controller - Google Patents
Constant voltage power supply controller Download PDFInfo
- Publication number
- CN205490144U CN205490144U CN201620048835.9U CN201620048835U CN205490144U CN 205490144 U CN205490144 U CN 205490144U CN 201620048835 U CN201620048835 U CN 201620048835U CN 205490144 U CN205490144 U CN 205490144U
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- China
- Prior art keywords
- electric capacity
- resistance
- diode
- terminal regulator
- power supply
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- Expired - Fee Related
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Abstract
The utility model discloses a constant voltage power supply controller, including three terminal regulator U1, diode D1, emitting diode LED, resistance R1, potentiometre RP1, electric capacity C1 and triode VT1, diode D1 negative pole is connected respectively to the three terminal regulator U1 input, power VCC and electric capacity C1, the electric capacity C1 other end is connecting resistance R2 respectively, triode VT1 collecting electrode, electric capacity C2 and electric capacity C3 and ground connection, the three terminal regulator U1 earthing terminal is connected respectively to the resistance R2 other end, resistance R1, triode VT1 projecting pole summation potential ware RP1 one end, potentiometre RP1 gleitbretter is connected respectively to the potentiometre RP1 other end, diode D2 is anodal, the triode VT1 base and the electric capacity C2 other end, the utility model discloses a whole circuit of some resistor -Capacitor unit controls of triode cooperation, circuit structure is simple, has the starting protection function, and the steady voltage is effectual, and is with low costs, small, and application scope is wide.
Description
Technical field
This utility model relates to a kind of power supply, specifically a kind of stabilized-voltage power supply controller.
Background technology
In various past and existing frequently-used power supply, design mostly exists an intrinsic shortcoming: to draw a bigger electric current powering up moment, this electric current is likely to be breached 10 ~ 100 times of power supply static working current, the problem that the most at least may produce two aspects, first, if current and power supply can not supply enough starting currents, power supply cannot start possibly into a kind of lock-out state, second, this electric current is likely to result in the reduction of input supply voltage, it is sufficient to cause other power-equipment instant power-downs using same input power；So this utility model provides a kind of circuit structure simple, with the stabilized-voltage power supply controller of starting protection function.
Utility model content
The purpose of this utility model is to provide a kind of stabilized-voltage power supply controller, with the problem solving to propose in above-mentioned background technology.
nullFor achieving the above object，This utility model following technical scheme of offer: a kind of stabilized-voltage power supply controller，Including three terminal regulator U1、Diode D1、LED、Resistance R1、Potentiometer RP1、Electric capacity C1 and audion VT1，Described three terminal regulator U1 input connects diode D1 negative pole respectively、Power supply VCC and electric capacity C1，The electric capacity C1 other end connects resistance R2 respectively、Audion VT1 colelctor electrode、Electric capacity C2 and electric capacity C3 ground connection，The resistance R2 other end connects three terminal regulator U1 earth terminal respectively、Resistance R1、Audion VT1 emitter stage and potentiometer RP1 one end，The potentiometer RP1 other end connects potentiometer RP1 slide plate respectively、Diode D2 positive pole、Audion VT1 base stage and the electric capacity C2 other end，Diode D2 negative pole connects diode D1 positive pole respectively、The resistance R1 other end、Three terminal regulator U1 outfan and LED positive pole，LED negative pole connects output end vo and the electric capacity C3 other end respectively.
As this utility model further scheme: described three terminal regulator U1 uses 7805.
Compared with prior art, the beneficial effects of the utility model are: this utility model uses an audion to coordinate some Resistor-Capacitor Units to control whole circuit, and circuit structure is simple, and with starting protection function, voltage regulation result is good, low cost, and volume is little, applied widely.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of stabilized-voltage power supply controller.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment; technical scheme in this utility model embodiment is clearly and completely described; obviously; described embodiment is only a part of embodiment of this utility model; rather than whole embodiments; based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，In this utility model embodiment，A kind of stabilized-voltage power supply controller，Including three terminal regulator U1、Diode D1、LED、Resistance R1、Potentiometer RP1、Electric capacity C1 and audion VT1，Described three terminal regulator U1 input connects diode D1 negative pole respectively、Power supply VCC and electric capacity C1，The electric capacity C1 other end connects resistance R2 respectively、Audion VT1 colelctor electrode、Electric capacity C2 and electric capacity C3 ground connection，The resistance R2 other end connects three terminal regulator U1 earth terminal respectively、Resistance R1、Audion VT1 emitter stage and potentiometer RP1 one end，The potentiometer RP1 other end connects potentiometer RP1 slide plate respectively、Diode D2 positive pole、Audion VT1 base stage and the electric capacity C2 other end，Diode D2 negative pole connects diode D1 positive pole respectively、The resistance R1 other end、Three terminal regulator U1 outfan and LED positive pole，LED negative pole connects output end vo and the electric capacity C3 other end respectively；Described three terminal regulator U1 uses 7805.
Operation principle of the present utility model is: refer to Fig. 1, if three terminal regulator U1 input short circuit and when U1 outfan is connected to larger capacitance, so output capacitor discharge current will flow into the outfan of three terminal regulator U1 and is easy for burning out manostat, access backward diode D1 at three terminal regulator U1 input and outfan can play a protective role, terminate into shunt capacitance C2 and diode D2 at three terminal regulator U1 outfan, when input or outfan open circuit, three terminal regulator U1 internal resistance can be utilized to limit peak discharge current, play the effect of protection stabilivolt VT1.
When power supply VCC accesses, because the voltage on C2 can not suddenly change, thus VT1 because base potential is relatively low saturation conduction, the voltage making the outfan of three terminal regulator U1 and circuit output end Vo is the lowest, along with the charging of C2, the base potential of VT1 rises, and its emitter stage current potential gradually rises, circuit output end Vo is made also to synchronize to raise, when C2 is fully charged, VT1 is cut off, and start-up circuit is ineffective, output end vo also reaches setting value, and the time of startup can be adjusted by the value changing C2 and RP1；LED is power supply indicator.
To those skilled in the art, obviously this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the case of without departing substantially from spirit or essential attributes of the present utility model, this utility model can be realized in other specific forms, therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim are included in this utility model, should not be considered as limiting involved claim by any reference in claim.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (2)
- null1. a stabilized-voltage power supply controller，Including three terminal regulator U1、Diode D1、LED、Resistance R1、Potentiometer RP1、Electric capacity C1 and audion VT1，It is characterized in that，Described three terminal regulator U1 input connects diode D1 negative pole respectively、Power supply VCC and electric capacity C1，The electric capacity C1 other end connects resistance R2 respectively、Audion VT1 colelctor electrode、Electric capacity C2 and electric capacity C3 ground connection，The resistance R2 other end connects three terminal regulator U1 earth terminal respectively、Resistance R1、Audion VT1 emitter stage and potentiometer RP1 one end，The potentiometer RP1 other end connects potentiometer RP1 slide plate respectively、Diode D2 positive pole、Audion VT1 base stage and the electric capacity C2 other end，Diode D2 negative pole connects diode D1 positive pole respectively、The resistance R1 other end、Three terminal regulator U1 outfan and LED positive pole，LED negative pole connects output end vo and the electric capacity C3 other end respectively.
- Stabilized-voltage power supply controller the most according to claim 1, it is characterised in that described three terminal regulator U1 uses 7805.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048835.9U CN205490144U (en) | 2016-01-19 | 2016-01-19 | Constant voltage power supply controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048835.9U CN205490144U (en) | 2016-01-19 | 2016-01-19 | Constant voltage power supply controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490144U true CN205490144U (en) | 2016-08-17 |
Family
ID=56671152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620048835.9U Expired - Fee Related CN205490144U (en) | 2016-01-19 | 2016-01-19 | Constant voltage power supply controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205490144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107273953A (en) * | 2017-06-16 | 2017-10-20 | 合肥讯邦网络科技有限公司 | A kind of Internet of Things communication system |
-
2016
- 2016-01-19 CN CN201620048835.9U patent/CN205490144U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107273953A (en) * | 2017-06-16 | 2017-10-20 | 合肥讯邦网络科技有限公司 | A kind of Internet of Things communication system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170119 |