CN203164813U - Automatic adjustment voltage regulator - Google Patents
Automatic adjustment voltage regulator Download PDFInfo
- Publication number
- CN203164813U CN203164813U CN 201320120715 CN201320120715U CN203164813U CN 203164813 U CN203164813 U CN 203164813U CN 201320120715 CN201320120715 CN 201320120715 CN 201320120715 U CN201320120715 U CN 201320120715U CN 203164813 U CN203164813 U CN 203164813U
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- triode
- resistance
- potentiometer
- voltage regulator
- stabilivolt
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Abstract
The utility model discloses an automatic adjustment voltage regulator, which comprises a first potentiometer, a second potentiometer, a first triode, a second triode, a third triode, a fourth triode, a fifth triode, a first resistance, a second resistance, a third resistance, a fourth resistance, a fifth resistance, a sixth resistance, a first voltage regulator tube, a second voltage regulator tube, a first capacitance and a second capacitance. When the overload is further increased, the load is cut off, and the automatic recovery circuit is determined by the second triode; in the state of short circuit, the second triode is subjected to saturation breakover, and the current through the second triode is limited by the first resistance; and when a short circuit fault of the load is eliminated, voltage which enables the fifth triode to be slightly conductive appears, so that the voltage regulator is started. According to the automatic adjustment voltage regulator, when the load is subjected to the short circuit fault, the output current cannot be completely cut off, namely, a certain current continually passes through an adjustment tube, so that after the current fault is eliminated, the voltage regulator can automatically return to work, and the function of protecting the voltage regulator is achieved.
Description
Technical field
The utility model relates to a kind of voltage stabilizer for various electrical appliances, relates in particular to a kind of automatic adjustment type voltage stabilizer.
Background technology
As everyone knows, voltage stabilizer is widely adopted in various electrical appliances, but existing voltage stabilizer is when short trouble appears in load, output current will be completely severed, namely there is not electric current to pass through to adjust pipe, this electric current can make voltage stabilizer can not in time reply work after fault is eliminated, even burns voltage stabilizer.
Summary of the invention
The purpose of this utility model provides a kind of automatic adjustment type voltage stabilizer with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises first potentiometer, second potentiometer, first triode to the, five triodes, first resistance to the, six resistance, first stabilivolt, second stabilivolt, first electric capacity and second electric capacity, first end while of described first resistance and first end of described second resistance, first end of described the 3rd resistance, first end of described first potentiometer, the emitter of described first triode, first end of described the 4th resistance, first end of described first electric capacity is connected with the cathode power supply input end, second end of described first resistance is connected with the collector of described second triode, the base stage of described second triode is connected with second end of described second resistance and the negative pole of described first stabilivolt simultaneously, the positive pole of described first stabilivolt is connected with ground wire, second end of described the 3rd resistance is connected with the emitter of described the 3rd triode, the base stage of described the 3rd triode is connected with second end of described first potentiometer and the emitter of described the 4th triode simultaneously, the base stage of described first triode is connected with the sliding end of described first potentiometer, second end of described the 4th resistance is connected with the base stage of described the 4th triode and the collector of described the 5th triode simultaneously, the collector while of described first triode and the emitter of described the 5th triode, first end of described the 6th resistance is connected with the positive pole of described second stabilivolt, the base stage of described the 5th triode is connected with the sliding end of described second potentiometer, the negative pole while of described second stabilivolt and first end of described second potentiometer, the collector of described the 3rd triode, first end of described second electric capacity, the emitter of described second triode is connected with the positive source output terminal, second end of described second electric capacity is connected with ground wire, second end while of described the 6th resistance and second end of described second potentiometer, first end of described the 5th resistance, second end of described first electric capacity, the power cathode input end is connected with the power cathode output terminal, and second end of described the 5th resistance is connected with the collector of described the 4th triode.
Particularly, described first triode, described the 3rd triode and described the 4th triode are the positive-negative-positive triode, and described second triode and described the 5th triode are NPN type triode.
The beneficial effects of the utility model are:
When the utility model short trouble occurs in load; output current can not cut off fully; namely have certain electric current to continue by adjusting pipe, so the utility model can make voltage stabilizer automatically resume work after current failure is eliminated, and have the protective effect to voltage stabilizer.
Description of drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1: the utility model comprises the first potentiometer RP1, the second potentiometer RP2, the first triode VT1 to the, five triode VT5, first resistance R, 1 to the 6th resistance R 6, the first stabilivolt VD1, the second stabilivolt VD2, first capacitor C 1 and second capacitor C 2, first end while of first resistance R 1 and first end of second resistance R 2, first end of the 3rd resistance R 3, first end of the first potentiometer RP1, the emitter of the first triode VT1, first end of the 4th resistance R 4, first end of first capacitor C 1 is connected with the cathode power supply input end, second end of first resistance R 1 is connected with the collector of the second triode VT2, the base stage of the second triode VT2 is connected with second end of second resistance R 2 and the negative pole of the first stabilivolt VD1 simultaneously, the positive pole of the first stabilivolt VD1 is connected with ground wire, second end of the 3rd resistance R 3 is connected with the emitter of the 3rd triode VT3, the base stage of the 3rd triode VT3 is connected with second end of the first potentiometer RP1 and the emitter of the 4th triode VT4 simultaneously, the base stage of the first triode VT1 is connected with the sliding end of the first potentiometer RP1, second end of the 4th resistance R 4 is connected with the base stage of the 4th triode VT4 and the collector of the 5th triode VT5 simultaneously, the collector while of the first triode VT1 and the emitter of the 5th triode VT5, first end of the 6th resistance R 6 is connected with the positive pole of the second stabilivolt VD2, the base stage of the 5th triode VT5 is connected with the sliding end of the second potentiometer RP2, the negative pole while of the second stabilivolt VD2 and first end of the second potentiometer RP2, the collector of the 3rd triode VT3, first end of second capacitor C 2, the emitter of the second triode VT2 is connected with the positive source output terminal, second end of second capacitor C 2 is connected with ground wire, second end while of the 6th resistance R 6 and second end of the second potentiometer RP2, first end of the 5th resistance R 5, second end of first capacitor C 1, the power cathode input end is connected with the power cathode output terminal, and second end of the 5th resistance R 5 is connected with the collector of the 4th triode VT4.The first triode VT1, the 3rd triode VT3 and described the 4th triode VT4 are the positive-negative-positive triode, and the second triode VT2 and the 5th triode VT5 are NPN type triode.
As shown in Figure 1: when output voltage increases, the 5th triode VT5 base bias reduces, its collector current reduces, and voltage raises, thereby causes that the 4th triode VT4 base voltage raises, electric current reduces, its emitter (namely adjusting pipe the 3rd triode VT3 base stage) voltage raises, and electric current reduces, and the 3rd triode VT3 pressure drop Uce3 increases, output voltage is reduced, reach the purpose of voltage stabilizing.Output voltage can be by regulating the second potentiometer RP2 change.When overload, the pressure drop on the 3rd resistance R 3 increases, and adjustment pipe the 3rd triode VT3 base bias is reduced, thereby cause the slight conducting of the protection tube first triode VT1, and the 5th triode VT5 ends, and voltage stabilizer carries out the transition to the duty of restriction load current.Regulate the first potentiometer RP1, can determine the current limliting threshold value.When overload further strengthens, load is cut off, automatic restoring circuit is determined by the second triode VT2 link, under short-circuit condition, this is guaranteed adequate food and conducting, is subjected to 1 restriction of first resistance R by its electric current, after the load short circuits fault is eliminated, the voltage of the slight conducting of the 5th triode VT5 occurs making, cause the startup of voltage stabilizer.The second triode VT2 base voltage is in advance by the given level less than 5v of the first stabilivolt VD1, and when voltage stabilizer entered duty, the second triode VT2 ended like this, and load current is only by the 3rd triode VT3.
Claims (2)
1. automatic adjustment type voltage stabilizer, it is characterized in that: comprise first potentiometer, second potentiometer, first triode to the, five triodes, first resistance to the, six resistance, first stabilivolt, second stabilivolt, first electric capacity and second electric capacity, first end while of described first resistance and first end of described second resistance, first end of described the 3rd resistance, first end of described first potentiometer, the emitter of described first triode, first end of described the 4th resistance, first end of described first electric capacity is connected with the cathode power supply input end, second end of described first resistance is connected with the collector of described second triode, the base stage of described second triode is connected with second end of described second resistance and the negative pole of described first stabilivolt simultaneously, the positive pole of described first stabilivolt is connected with ground wire, second end of described the 3rd resistance is connected with the emitter of described the 3rd triode, the base stage of described the 3rd triode is connected with second end of described first potentiometer and the emitter of described the 4th triode simultaneously, the base stage of described first triode is connected with the sliding end of described first potentiometer, second end of described the 4th resistance is connected with the base stage of described the 4th triode and the collector of described the 5th triode simultaneously, the collector while of described first triode and the emitter of described the 5th triode, first end of described the 6th resistance is connected with the positive pole of described second stabilivolt, the base stage of described the 5th triode is connected with the sliding end of described second potentiometer, the negative pole while of described second stabilivolt and first end of described second potentiometer, the collector of described the 3rd triode, first end of described second electric capacity, the emitter of described second triode is connected with the positive source output terminal, second end of described second electric capacity is connected with ground wire, second end while of described the 6th resistance and second end of described second potentiometer, first end of described the 5th resistance, second end of described first electric capacity, the power cathode input end is connected with the power cathode output terminal, and second end of described the 5th resistance is connected with the collector of described the 4th triode.
2. automatic adjustment type voltage stabilizer according to claim 1, it is characterized in that: described first triode, described the 3rd triode and described the 4th triode are the positive-negative-positive triode, and described second triode and described the 5th triode are NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120715 CN203164813U (en) | 2013-03-15 | 2013-03-15 | Automatic adjustment voltage regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120715 CN203164813U (en) | 2013-03-15 | 2013-03-15 | Automatic adjustment voltage regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203164813U true CN203164813U (en) | 2013-08-28 |
Family
ID=49025985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320120715 Expired - Fee Related CN203164813U (en) | 2013-03-15 | 2013-03-15 | Automatic adjustment voltage regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203164813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049661A (en) * | 2013-03-15 | 2014-09-17 | 成都瑞途电子有限公司 | Automatic adjustment type voltage stabilizer |
-
2013
- 2013-03-15 CN CN 201320120715 patent/CN203164813U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049661A (en) * | 2013-03-15 | 2014-09-17 | 成都瑞途电子有限公司 | Automatic adjustment type voltage stabilizer |
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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: 20130828 Termination date: 20140315 |