CN204290765U - There is the symmetrical stabilized voltage power supply of temperature compensation function - Google Patents
There is the symmetrical stabilized voltage power supply of temperature compensation function Download PDFInfo
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- CN204290765U CN204290765U CN201420726301.8U CN201420726301U CN204290765U CN 204290765 U CN204290765 U CN 204290765U CN 201420726301 U CN201420726301 U CN 201420726301U CN 204290765 U CN204290765 U CN 204290765U
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- triode
- resistance
- electric capacity
- amplifier
- power supply
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Abstract
The utility model discloses a kind of symmetrical stabilized voltage power supply with temperature compensation function, comprise the first resistance to the 5th resistance, the first electric capacity to the 3rd electric capacity, the first triode to the 4th triode, bridge rectifier, transformer, three terminal regulator and amplifier, the two ends of a winding of described transformer are connected with civil power both positive and negative polarity respectively, and the two ends of the secondary winding of described transformer are connected with the ac input end of described bridge rectifier respectively.The symmetrical stabilized voltage power supply that the utility model has temperature compensation function is connected to two same model triodes in the pressure-control circuit of three terminal regulator, utilize the temperature characterisitic of the PN junction of the first triode and the second triode to carry out the mutual compensation of temperature, thus make this power supply output positive voltage have higher temperature stability and accuracy; Utilize amplifier and the 4th triode simultaneously, make negative voltage accurately follow the tracks of the change of positive voltage, thus make positive negative output voltage Striking symmetry, and there is higher precision.
Description
Technical field
The utility model relates to a kind of stabilized voltage power supply, particularly relates to a kind of symmetrical stabilized voltage power supply with temperature compensation function.
Background technology
Along with society burns the wind, various electronic equipment grows with each passing day, but the aging and lagging in development of electrical power distribution facility, and design the reasons such as bad and electricity shortage and cause the too low of terminal temperature difference voltage, then often voltage is higher for the end of a thread user, computer is as the electrical equipment of a kind of family indispensability, its importance is not only simple in amusement, all be absolutely necessary electronic equipment in the work of many people, but the voltage of instability can cause mortal injury to calculating, acceleration equipment aging, affect and even burn accessory useful life, even there is security incident in severe patient, cause immeasurable loss, therefore computer is provided with stabilized voltage power supply, but traditional stabilized voltage power supply can not regulate according to temperature, when stabilized voltage power supply used of a specified duration, temperature rises, then again can there is voltage instability or the higher situation of voltage.
Utility model content
The purpose of this utility model is just to provide a kind of symmetrical stabilized voltage power supply with temperature compensation function to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of symmetrical stabilized voltage power supply with temperature compensation function, comprise the first resistance to the 5th resistance, first electric capacity is to the 3rd electric capacity, first triode is to the 4th triode, bridge rectifier, transformer, three terminal regulator and amplifier, the two ends of a winding of described transformer are connected with civil power both positive and negative polarity respectively, the two ends of the secondary winding of described transformer are connected with the ac input end of described bridge rectifier respectively, the cathode output end of described bridge rectifier is connected with the first end of described first electric capacity and the input of described three terminal regulator respectively, the voltage stabilizing end of described three terminal regulator is connected with the emitter of described first triode, the output of described three terminal regulator respectively with the first end of described first resistance, the cathode voltage input of described amplifier is connected with the first end of described 4th resistance, the output of described three terminal regulator is cathode voltage output, second end of described first resistance is connected with the emitter of described second triode, the base stage of described second triode is connected with the base stage of described first triode and the first end of described 3rd electric capacity respectively, the collector electrode of described second triode is connected with the first end of described second resistance, second end of described second resistance respectively with the second end of described 3rd electric capacity, the collector electrode of described first triode, second end of described first electric capacity is connected with the first end of described second electric capacity, the cathode output end of described bridge rectifier respectively with the second end of described second electric capacity, the described collector electrode of the 4th triode is connected with the cathode voltage input of described amplifier, the output of described amplifier is connected with the base stage of described 4th triode and the collector electrode of described 3rd triode respectively, the emitter of described 4th triode is connected with the base stage of described 3rd triode and the first end of described 3rd resistance respectively, the emitter of described 3rd triode is connected with the second end of described 3rd resistance and the first end of described 5th resistance respectively, the transmitting very cathode voltage output of described 3rd triode, the in-phase input end ground connection of described amplifier, the inverting input of described amplifier is connected with the second end of described 4th resistance and the second end of described 5th resistance respectively.
The beneficial effects of the utility model are:
The symmetrical stabilized voltage power supply that the utility model has temperature compensation function is connected to two same model triodes in the pressure-control circuit of three terminal regulator, utilize the temperature characterisitic of the PN junction of the first triode and the second triode to carry out the mutual compensation of temperature, thus make this power supply output positive voltage have higher temperature stability and accuracy; Utilize amplifier and the 4th triode simultaneously, make negative voltage accurately follow the tracks of the change of positive voltage, thus make positive negative output voltage Striking symmetry, and there is higher precision.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that the utility model has the symmetrical stabilized voltage power supply of temperature compensation function.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model has the symmetrical stabilized voltage power supply of temperature compensation function, comprise the first resistance R1 to the 5th resistance R5, first electric capacity C1 is to the 3rd electric capacity C3, first triode VT1 is to the 4th triode VT4, bridge rectifier BR, transformer T, three terminal regulator IC1 and amplifier IC2, the two ends of a winding of transformer T are connected with civil power both positive and negative polarity respectively, the two ends of the secondary winding of transformer T are connected with the ac input end of bridge rectifier BR respectively, the cathode output end of bridge rectifier BR is connected with the first end of the first electric capacity C1 and the input of three terminal regulator IC1 respectively, the voltage stabilizing end of three terminal regulator IC1 is connected with the emitter of the first triode VT1, the output of three terminal regulator IC1 respectively with the first end of the first resistance R1, the cathode voltage input of amplifier IC2 is connected with the first end of the 4th resistance R4, the output of three terminal regulator IC1 is cathode voltage output, second end of the first resistance R1 is connected with the emitter of the second triode VT2, the base stage of the second triode VT2 is connected with the base stage of the first triode VT1 and the first end of the 3rd electric capacity C3 respectively, the collector electrode of the second triode VT2 is connected with the first end of the second resistance R2, second end of the second resistance R2 respectively with second end of the 3rd electric capacity C3, the collector electrode of the first triode VT1, second end of the first electric capacity C1 is connected with the first end of the second electric capacity C2, the cathode output end of bridge rectifier BR respectively with second end of the second electric capacity C2, the collector electrode of the 4th triode VT4 is connected with the cathode voltage input of amplifier IC2, the output of amplifier IC2 is connected with the base stage of the 4th triode VT4 and the collector electrode of the 3rd triode VT3 respectively, the emitter of the 4th triode VT4 is connected with the base stage of the 3rd triode VT3 and the first end of the 3rd resistance R3 respectively, the emitter of the 3rd triode VT3 is connected with second end of the 3rd resistance R3 and the first end of the 5th resistance R5 respectively, the transmitting very cathode voltage output of the 3rd triode VT3, the in-phase input end ground connection of amplifier IC2, the inverting input of amplifier IC2 is connected with second end of the 4th resistance R4 and second end of the 5th resistance R5 respectively.
The operation principle that the utility model has the symmetrical stabilized voltage power supply of temperature compensation function is as follows:
This stabilized voltage power supply is connected to two same model triodes in the pressure-control circuit of three terminal regulator IC1, utilize the temperature characterisitic of the PN junction of the first triode VT1 and the second triode VT2 to carry out the mutual compensation of temperature, thus make this power supply output positive voltage have higher temperature stability and accuracy; Utilize amplifier IC2 and the 4th triode VT4 simultaneously, make negative voltage accurately follow the tracks of the change of positive voltage, thus make positive negative output voltage Striking symmetry, and there is higher precision.
Claims (1)
1. one kind has the symmetrical stabilized voltage power supply of temperature compensation function, it is characterized in that: comprise the first resistance to the 5th resistance, first electric capacity is to the 3rd electric capacity, first triode is to the 4th triode, bridge rectifier, transformer, three terminal regulator and amplifier, the two ends of a winding of described transformer are connected with civil power both positive and negative polarity respectively, the two ends of the secondary winding of described transformer are connected with the ac input end of described bridge rectifier respectively, the cathode output end of described bridge rectifier is connected with the first end of described first electric capacity and the input of described three terminal regulator respectively, the voltage stabilizing end of described three terminal regulator is connected with the emitter of described first triode, the output of described three terminal regulator respectively with the first end of described first resistance, the cathode voltage input of described amplifier is connected with the first end of described 4th resistance, the output of described three terminal regulator is cathode voltage output, second end of described first resistance is connected with the emitter of described second triode, the base stage of described second triode is connected with the base stage of described first triode and the first end of described 3rd electric capacity respectively, the collector electrode of described second triode is connected with the first end of described second resistance, second end of described second resistance respectively with the second end of described 3rd electric capacity, the collector electrode of described first triode, second end of described first electric capacity is connected with the first end of described second electric capacity, the cathode output end of described bridge rectifier respectively with the second end of described second electric capacity, the described collector electrode of the 4th triode is connected with the cathode voltage input of described amplifier, the output of described amplifier is connected with the base stage of described 4th triode and the collector electrode of described 3rd triode respectively, the emitter of described 4th triode is connected with the base stage of described 3rd triode and the first end of described 3rd resistance respectively, the emitter of described 3rd triode is connected with the second end of described 3rd resistance and the first end of described 5th resistance respectively, the transmitting very cathode voltage output of described 3rd triode, the in-phase input end ground connection of described amplifier, the inverting input of described amplifier is connected with the second end of described 4th resistance and the second end of described 5th resistance respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726301.8U CN204290765U (en) | 2014-11-26 | 2014-11-26 | There is the symmetrical stabilized voltage power supply of temperature compensation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726301.8U CN204290765U (en) | 2014-11-26 | 2014-11-26 | There is the symmetrical stabilized voltage power supply of temperature compensation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204290765U true CN204290765U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420726301.8U Expired - Fee Related CN204290765U (en) | 2014-11-26 | 2014-11-26 | There is the symmetrical stabilized voltage power supply of temperature compensation function |
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| Country | Link |
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| CN (1) | CN204290765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI549406B (en) * | 2015-11-20 | 2016-09-11 | 明緯（廣州）電子有限公司 | Novel feedback circuit with temperature compensation function |
-
2014
- 2014-11-26 CN CN201420726301.8U patent/CN204290765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI549406B (en) * | 2015-11-20 | 2016-09-11 | 明緯（廣州）電子有限公司 | Novel feedback circuit with temperature compensation function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150422 Termination date: 20191126 |