CN203522568U - High-reliability auxiliary power supply circuit used for ATX power supply - Google Patents
High-reliability auxiliary power supply circuit used for ATX power supply Download PDFInfo
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- CN203522568U CN203522568U CN201320713504.9U CN201320713504U CN203522568U CN 203522568 U CN203522568 U CN 203522568U CN 201320713504 U CN201320713504 U CN 201320713504U CN 203522568 U CN203522568 U CN 203522568U
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- resistance
- triode
- power supply
- transformer
- electric capacity
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Abstract
The utility model discloses a high-reliability auxiliary power supply circuit used for an ATX power supply. The circuit comprises a power supply, a first diode to a fourth diode, a first capacitor to a sixth capacitor, a first resistor to a ninth resistor, a first triode, a second triode, a zener diode, a transformer and a voltage stabilizing integrated circuit; the first triode is used for overcurrent adjustment; the second triode is adjusted and controlled by the first triode; and when voltage inputted in a rectifying mode into the first primary coil of the transformer rises or the load of the second primary coil of the transformer is too heavy, current flowing through the first primary coil of the transformer and the collector of the second triode is increased. The high-reliability auxiliary power supply circuit used for an ATX power supply has the advantages of simple structure, low energy consumption and low cost and due to the feedback regulation effect of the second primary coil of the transformer of the auxiliary power supply circuit and the first triode, the auxiliary circuit can operate safely and reliably.
Description
Technical field
The utility model relates to a kind of auxiliary power circuit, relates in particular to a kind of high reliability auxiliary power circuit for ATX power supply.
Background technology
ATX power supply is the working power of computer, effect is that the power supply of alternating current 220V is converted to direct current 5V, the 12V of computer-internal use and the power supply of 24V, in ATX Switching Power Supply, auxiliary power circuit is to maintain the key that can microcomputer and ATX power supply normally work, accessory power supply is to the standby voltage of computer motherboard power supply supervisory circuit output+5V, tradition for the high reliability auxiliary power circuit of ATX power supply there is complex structure, the shortcoming high and that cost is high that consumes energy, and the fail safe while also there is work is low and the problem of poor reliability.
Utility model content
The purpose of this utility model provides a kind of high reliability auxiliary power circuit for ATX power supply with regard to being in order to address the above problem.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of high reliability auxiliary power circuit for ATX power supply, comprise power supply, the first diode to the four diodes, the first electric capacity to the six electric capacity, the first resistance to the nine resistance, the first triode, the second triode, voltage stabilizing didoe, transformer and integrated regulator, the positive pole of described power supply is connected with the first end of described the second resistance, the second end of described the second resistance is connected with the first end of the first end of described the 5th resistance and the first primary coil of described transformer respectively, the second end of the first primary coil of described transformer is connected with the first end of described the 7th resistance with the collector electrode of described the second triode respectively, the second end of described the 7th resistance is connected with the first end of described the 3rd electric capacity, the first end of the second primary coil of described transformer is connected with the first end of described the first electric capacity with the negative pole of described the first diode respectively, the second end of the second primary coil of described transformer respectively with the first end of described the first resistance, the first end of described the second electric capacity, the emitter of described the first triode, ground connection after the second end of the first end of described the 6th resistance and described the 3rd electric capacity is connected, the positive pole of described the first diode respectively with the second end of described the first resistance, the second end of described the second electric capacity is connected with the negative pole of described the second diode, the positive pole of described the second diode is connected with the positive pole of described voltage stabilizing didoe, the negative pole of described voltage stabilizing didoe respectively with the second end of described the 6th resistance, the emitter of described the second triode, the base stage of described the second triode, the first end of described the 4th resistance, the first end of described the 3rd resistance is connected with the second end of described the 5th resistance, the second end of described the first electric capacity is connected with the second end of described the 3rd resistance with the collector electrode of described the first triode respectively, the base stage of described the first triode is connected with the second end of described the 4th resistance, the first end of the first secondary coil of described transformer is connected with the positive pole of described the 3rd diode, the second end of the first secondary coil of described transformer is connected with the positive pole of described the 4th diode with the first end of the second subprime coil of described transformer respectively, the second end of the second subprime coil of described transformer respectively with the first end of described the 4th electric capacity, the first end of described the 9th resistance, the first end of described the 5th electric capacity, ground connection after the first end of the earth terminal of described integrated regulator and described the 6th electric capacity is connected, the negative pole of described the 3rd diode is connected with the first end of described the 8th resistance, the second end of described the 8th resistance is connected with the second end of described the 4th electric capacity, the negative pole of described the 4th diode is connected with the first end of described the tenth resistance with the input of described integrated regulator respectively, the second end of described the tenth resistance is connected with the second end of described the 5th electric capacity, the output of described integrated regulator is connected with the second end of described the 6th electric capacity with the second end of described the 9th resistance respectively, the output of described integrated regulator is the voltage output end of described auxiliary power circuit.
The beneficial effects of the utility model are:
The utility model is a kind of high reliability auxiliary power circuit for ATX power supply, that this auxiliary power circuit has advantages of is simple in structure, consume energy low and cost is low, and the second primary coil of the transformer of this auxiliary power circuit and the feedback regulation effect of the first triode, safe and reliable while making this auxiliary circuit work.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of high reliability auxiliary power circuit for ATX power supply of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of high reliability auxiliary power circuit for ATX power supply of the utility model, comprise power supply Vi, the first diode D1 to the four diode D4, the first capacitor C 1 is to the 6th capacitor C 6, the first resistance R 1 is to the 9th resistance R 9, the first triode VT1, the second triode VT2, voltage stabilizing didoe ZD, transformer T and integrated regulator IC, the positive pole of power supply Vi is connected with the first end of the second resistance R 2, the second end of the second resistance R 2 is connected with the first end of the first end of the 5th resistance R 5 and the first primary coil of transformer T respectively, the second end of the first primary coil of transformer T is connected with the first end of the 7th resistance R 7 with the collector electrode of the second triode VT2 respectively, the second end of the 7th resistance R 7 is connected with the first end of the 3rd capacitor C 3, the first end of the second primary coil of transformer T is connected with the first end of the first capacitor C 1 with the negative pole of the first diode D1 respectively, the second end of the second primary coil of transformer T respectively with the first end of the first resistance R 1, the first end of the second capacitor C 2, the emitter of the first triode VT1, ground connection after the second end of the first end of the 6th resistance R 6 and the 3rd capacitor C 3 is connected, the positive pole of the first diode D1 respectively with the second end of the first resistance R 1, the second end of the second capacitor C 2 is connected with the negative pole of the second diode D2, the positive pole of the second diode D2 is connected with the positive pole of voltage stabilizing didoe ZD, the negative pole of voltage stabilizing didoe ZD respectively with the second end of the 6th resistance R 6, the emitter of the second triode VT2, the base stage of the second triode VT2, the first end of the 4th resistance R 4, the first end of the 3rd resistance R 3 is connected with the second end of the 5th resistance R 5, the second end of the first capacitor C 1 is connected with the second end of the 3rd resistance R 3 with the collector electrode of the first triode VT1 respectively, the base stage of the first triode VT1 is connected with the second end of the 4th resistance R 4, the first end of the first secondary coil of transformer T is connected with the positive pole of the 3rd diode D3, the second end of the first secondary coil of transformer T is connected with the positive pole of the 4th diode D4 with the first end of the second subprime coil of transformer T respectively, the second end of the second subprime coil of transformer T respectively with the first end of the 4th capacitor C 4, the first end of the 9th resistance R 9, the first end of the 5th capacitor C 5, ground connection after the first end of the earth terminal of integrated regulator IC and the 6th capacitor C 6 is connected, the negative pole of the 3rd diode D3 is connected with the first end of the 8th resistance R 8, the second end of the 8th resistance R 8 is connected with the second end of the 4th capacitor C 4, the negative pole of the 4th diode D4 is connected with the first end of the tenth resistance R 10 with the input of integrated regulator IC respectively, the second end of the tenth resistance R 10 is connected with the second end of the 5th capacitor C 5, the output of integrated regulator IC is connected with the second end of the 6th capacitor C 6 with the second end of the 9th resistance R 9 respectively, the output of integrated regulator IC is the voltage output end Vo of auxiliary power circuit.
Operation principle of the present utility model is as follows:
Power supply Vi input 300V direct voltage, through the second resistance R 2, enter the first primary coil of transformer T, through the 5th resistance R 5, enter the second triode VT2, the second triode VT2 conducting, the first triode VT1 is for overcurrent adjustment, the second triode VT2 is regulated and controled by the first triode VT1, when the voltage of the first primary coil rectification input of transformer T raise or the second primary coil load of transformer T overweight, while flowing through the first primary coil of transformer T and the increase of the collector current of the second triode VT2, the over-current detection resistance drop of the 6th resistance R 6 rises, by the 4th resistance R 4, passed to the base stage of the first triode VT1, the base voltage of the first triode VT1 is greater than 0.7V, the first triode VT1 conducting, the base potential of the second triode VT2 is dragged down, the first triode VT1 saturation conduction time shorten, the energy storage that the first primary coil of transformer T is magnetic energy by electric energy conversion reduces, the second primary coil rectifier output voltage of transformer T declines, the first triode VT1 adjusts pipe cut-off, the induced electromotive force of the secondary coil of transformer T, through the 3rd diode D3 and the 4th diode D4 output, operating voltage for host wake-up ATX power supply controlled starting.
Claims (1)
1. the high reliability auxiliary power circuit for ATX power supply, it is characterized in that: comprise power supply, the first diode to the four diodes, the first electric capacity to the six electric capacity, the first resistance to the nine resistance, the first triode, the second triode, voltage stabilizing didoe, transformer and integrated regulator, the positive pole of described power supply is connected with the first end of described the second resistance, the second end of described the second resistance is connected with the first end of the first end of described the 5th resistance and the first primary coil of described transformer respectively, the second end of the first primary coil of described transformer is connected with the first end of described the 7th resistance with the collector electrode of described the second triode respectively, the second end of described the 7th resistance is connected with the first end of described the 3rd electric capacity, the first end of the second primary coil of described transformer is connected with the first end of described the first electric capacity with the negative pole of described the first diode respectively, the second end of the second primary coil of described transformer respectively with the first end of described the first resistance, the first end of described the second electric capacity, the emitter of described the first triode, ground connection after the second end of the first end of described the 6th resistance and described the 3rd electric capacity is connected, the positive pole of described the first diode respectively with the second end of described the first resistance, the second end of described the second electric capacity is connected with the negative pole of described the second diode, the positive pole of described the second diode is connected with the positive pole of described voltage stabilizing didoe, the negative pole of described voltage stabilizing didoe respectively with the second end of described the 6th resistance, the emitter of described the second triode, the base stage of described the second triode, the first end of described the 4th resistance, the first end of described the 3rd resistance is connected with the second end of described the 5th resistance, the second end of described the first electric capacity is connected with the second end of described the 3rd resistance with the collector electrode of described the first triode respectively, the base stage of described the first triode is connected with the second end of described the 4th resistance, the first end of the first secondary coil of described transformer is connected with the positive pole of described the 3rd diode, the second end of the first secondary coil of described transformer is connected with the positive pole of described the 4th diode with the first end of the second subprime coil of described transformer respectively, the second end of the second subprime coil of described transformer respectively with the first end of described the 4th electric capacity, the first end of described the 9th resistance, the first end of described the 5th electric capacity, ground connection after the first end of the earth terminal of described integrated regulator and described the 6th electric capacity is connected, the negative pole of described the 3rd diode is connected with the first end of described the 8th resistance, the second end of described the 8th resistance is connected with the second end of described the 4th electric capacity, the negative pole of described the 4th diode is connected with the first end of described the tenth resistance with the input of described integrated regulator respectively, the second end of described the tenth resistance is connected with the second end of described the 5th electric capacity, the output of described integrated regulator is connected with the second end of described the 6th electric capacity with the second end of described the 9th resistance respectively, the output of described integrated regulator is the voltage output end of described auxiliary power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713504.9U CN203522568U (en) | 2013-11-13 | 2013-11-13 | High-reliability auxiliary power supply circuit used for ATX power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713504.9U CN203522568U (en) | 2013-11-13 | 2013-11-13 | High-reliability auxiliary power supply circuit used for ATX power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203522568U true CN203522568U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320713504.9U Expired - Fee Related CN203522568U (en) | 2013-11-13 | 2013-11-13 | High-reliability auxiliary power supply circuit used for ATX power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203522568U (en) |
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2013
- 2013-11-13 CN CN201320713504.9U patent/CN203522568U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140402 Termination date: 20141113 |
|
| EXPY | Termination of patent right or utility model |