CN204810167U - Positive negative voltage power adapter - Google Patents
Positive negative voltage power adapter Download PDFInfo
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- CN204810167U CN204810167U CN201520546391.7U CN201520546391U CN204810167U CN 204810167 U CN204810167 U CN 204810167U CN 201520546391 U CN201520546391 U CN 201520546391U CN 204810167 U CN204810167 U CN 204810167U
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Abstract
The utility model discloses a positive negative voltage power adapter, including electric capacity C1, chip IC1, triode V1 and second grade D5, input voltage U1, diode D6's positive pole, chip IC1's pin 1, chip IC1's pin 4 are connected to electric capacity C1's one end, and pin 10 and ground connection that electric capacity C3, electric capacity C10, electric capacity C11, resistance R1, transient voltage restrain diode D8, chip IC1's pin 9 and chip IC1 are connected to electric capacity C1's the other end. The utility model discloses complicated transformer structure has been abandoned to the positive negative voltage power adapter circuit, adopts the K174YH7 chip to form the output function that positive negative voltage was realized to the square wave form oscillator, and simple structure, components and parts are few simultaneously, consequently has integrated level height, output is stable, interference immunity is strong advantage.
Description
Technical field
The utility model relates to a kind of power supply adaptor, specifically a kind of generating positive and negative voltage power supply adaptor.
Background technology
Some special power consumption equipments need to use positive voltage and negative voltage simultaneously, therefore need to be equipped with independent generating positive and negative voltage power supply adaptor, but the most cost of power supply changeover device is in the market higher, reason is that the power supply adaptor that major part can produce positive-negative power is transformer device structure, not only complex structure, and leakage inductance voltage can be produced during transformer coil coupling, affect the stability of output voltage.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the generating positive and negative voltage power supply adaptor of diverse in function, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of generating positive and negative voltage power supply adaptor, comprise electric capacity C1, chip IC 1, triode V1 and secondary D5, one end of described electric capacity C1 connects input voltage U1, the anode of diode D6, the pin 1 of chip IC 1, the pin 4 of chip IC 1, the other end of electric capacity C1 connects electric capacity C3, electric capacity C10, electric capacity C11, resistance R1, transient voltage suppressor diode D8, the pin 9 of chip IC 1 and the pin 10 of chip IC 1 also ground connection, the other end of resistance R1 connects the pin 8 of electric capacity C2 and chip IC 1, the other end of electric capacity C2 connects electric capacity C4, electric capacity C8, the pin 12 of electric capacity C9 and chip IC 1, the other end of electric capacity C3 connects the pin 6 of chip IC 1, the other end of electric capacity C4 connects the anode of diode D2 and the negative electrode of diode D1, the anode of diode D1 connects electric capacity C6, the collector electrode of resistance R2 and triode V1, the negative electrode of diode D2 connects the anode of electric capacity C5 and diode D3, the other end of electric capacity C8 connects the negative electrode of diode D3 and the anode of diode D4, the anode contact resistance R2 of diode D1, the collector electrode of electric capacity C6 and triode V1, the other end of electric capacity C5 connects the other end of electric capacity C6, electric capacity C7, the negative electrode of transient voltage suppressor diode D7 and diode D4 ground connection, the other end of resistance R2 connects the other end of transient voltage suppressor diode D7 and the base stage of triode V1, the other end of the emitter connection electric capacity C7 of triode V1 is crossed and negative voltage-U2, the other end of electric capacity C9 connects the anode of diode D5 and the negative electrode of diode D6, the anode of diode D5 connects electric capacity C10, the collector electrode of resistance R3 and triode V2, the other end of resistance R3 connects the other end of transient voltage suppressor diode D7 and the base stage of triode V2, the emitter of triode V2 connects the other end and the positive voltage+U2 of electric capacity C11.
As preferred version of the present utility model: the model of described chip IC 1 is K174YH7.
Compared with prior art, the beneficial effects of the utility model are: the utility model generating positive and negative voltage power adapter circuit has abandoned complicated transformer device structure, the orthogonal wave oscillator of K174YH7 chipset is adopted to realize the output function of generating positive and negative voltage, simultaneously structure is simple, components and parts are few, therefore has that integrated level is high, the advantage of stable output, strong interference immunity.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of generating positive and negative voltage power supply adaptor.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of generating positive and negative voltage power supply adaptor, comprise electric capacity C1, chip IC 1, triode V1 and secondary D5, one end of described electric capacity C1 connects input voltage U1, the anode of diode D6, the pin 1 of chip IC 1, the pin 4 of chip IC 1, the other end of electric capacity C1 connects electric capacity C3, electric capacity C10, electric capacity C11, resistance R1, transient voltage suppressor diode D8, the pin 9 of chip IC 1 and the pin 10 of chip IC 1 also ground connection, the other end of resistance R1 connects the pin 8 of electric capacity C2 and chip IC 1, the other end of electric capacity C2 connects electric capacity C4, electric capacity C8, the pin 12 of electric capacity C9 and chip IC 1, the other end of electric capacity C3 connects the pin 6 of chip IC 1, the other end of electric capacity C4 connects the anode of diode D2 and the negative electrode of diode D1, the anode of diode D1 connects electric capacity C6, the collector electrode of resistance R2 and triode V1, the negative electrode of diode D2 connects the anode of electric capacity C5 and diode D3, the other end of electric capacity C8 connects the negative electrode of diode D3 and the anode of diode D4, the anode contact resistance R2 of diode D1, the collector electrode of electric capacity C6 and triode V1, the other end of electric capacity C5 connects the other end of electric capacity C6, electric capacity C7, the negative electrode of transient voltage suppressor diode D7 and diode D4 ground connection, the other end of resistance R2 connects the other end of transient voltage suppressor diode D7 and the base stage of triode V1, the other end of the emitter connection electric capacity C7 of triode V1 is crossed and negative voltage-U2, the other end of electric capacity C9 connects the anode of diode D5 and the negative electrode of diode D6, the anode of diode D5 connects electric capacity C10, the collector electrode of resistance R3 and triode V2, the other end of resistance R3 connects the other end of transient voltage suppressor diode D7 and the base stage of triode V2, the emitter of triode V2 connects the other end and the positive voltage+U2 of electric capacity C11.
The model of chip IC 1 is K174YH7.
Operation principle of the present utility model is: the chip IC 1 in circuit forms square-wave oscillator, electric capacity C2 and resistance R1 is positive feedback element, change its size and can change duty ratio, by electric capacity C9, diode D6, D5 forms half-wave rectifying circuit, at the negative half period of pulse, power supply is charged to electric capacity C9 by diode D6, the positive half cycle of pulse, electric capacity C9 both end voltage superposes with 12 pin output voltages of chip IC 1, be that electric capacity C10 charges by diode D5, by electric capacity C5 in-U2 rectification circuit, C8, diode D3, the original paper composition booster circuits such as D4, the positive half cycle of pulse, 12 pin output voltages of chip IC 1 charge to electric capacity C8 through diode D4, at pulse negative half period, electric capacity C8 both end voltage superposes with IC2 negative voltage charges to electric capacity C5 through diode D3, the reverse voltage higher than supply voltage is formed at electric capacity C5 two ends, between next pulse positive half period, 12 pin output voltages of chip IC 2 and electric capacity C5 both end voltage ground Ei, charge to electric capacity C4 through diode D1, thus electric capacity C4 institute charging voltage is close to the twice of peak value of pulse, next pulse negative half period, electric capacity C4 sets up negative voltage by diode D1 at electric capacity C6 two ends, electric capacity C6, the positive and negative charging voltage at C10 two ends, respectively through triode V1, the serial regulating circuit voltage stabilizing of the composition such as V2, the twin voltage of output ± U2.
Claims (2)
1. a generating positive and negative voltage power supply adaptor, comprise electric capacity C1, chip IC 1, triode V1 and secondary D5, it is characterized in that, one end of described electric capacity C1 connects input voltage U1, the anode of diode D6, the pin 1 of chip IC 1, the pin 4 of chip IC 1, the other end of electric capacity C1 connects electric capacity C3, electric capacity C10, electric capacity C11, resistance R1, transient voltage suppressor diode D8, the pin 9 of chip IC 1 and the pin 10 of chip IC 1 also ground connection, the other end of resistance R1 connects the pin 8 of electric capacity C2 and chip IC 1, the other end of electric capacity C2 connects electric capacity C4, electric capacity C8, the pin 12 of electric capacity C9 and chip IC 1, the other end of electric capacity C3 connects the pin 6 of chip IC 1, the other end of electric capacity C4 connects the anode of diode D2 and the negative electrode of diode D1, the anode of diode D1 connects electric capacity C6, the collector electrode of resistance R2 and triode V1, the negative electrode of diode D2 connects the anode of electric capacity C5 and diode D3, the other end of electric capacity C8 connects the negative electrode of diode D3 and the anode of diode D4, the anode contact resistance R2 of diode D1, the collector electrode of electric capacity C6 and triode V1, the other end of electric capacity C5 connects the other end of electric capacity C6, electric capacity C7, the negative electrode of transient voltage suppressor diode D7 and diode D4 ground connection, the other end of resistance R2 connects the other end of transient voltage suppressor diode D7 and the base stage of triode V1, the other end of the emitter connection electric capacity C7 of triode V1 is crossed and negative voltage-U2, the other end of electric capacity C9 connects the anode of diode D5 and the negative electrode of diode D6, the anode of diode D5 connects electric capacity C10, the collector electrode of resistance R3 and triode V2, the other end of resistance R3 connects the other end of transient voltage suppressor diode D7 and the base stage of triode V2, the emitter of triode V2 connects the other end and the positive voltage+U2 of electric capacity C11.
2. a kind of generating positive and negative voltage power supply adaptor according to claim 1, is characterized in that, the model of described chip IC 1 is K174YH7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520546391.7U CN204810167U (en) | 2015-07-27 | 2015-07-27 | Positive negative voltage power adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520546391.7U CN204810167U (en) | 2015-07-27 | 2015-07-27 | Positive negative voltage power adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204810167U true CN204810167U (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520546391.7U Expired - Fee Related CN204810167U (en) | 2015-07-27 | 2015-07-27 | Positive negative voltage power adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204810167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418445A (en) * | 2017-02-09 | 2018-08-17 | 苏州采奕动力科技有限公司 | A kind of novel double pressure quick responses braking rectifiers |
-
2015
- 2015-07-27 CN CN201520546391.7U patent/CN204810167U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418445A (en) * | 2017-02-09 | 2018-08-17 | 苏州采奕动力科技有限公司 | A kind of novel double pressure quick responses braking rectifiers |
| CN108418445B (en) * | 2017-02-09 | 2024-03-22 | 苏州采奕动力科技有限公司 | Double-voltage quick response braking rectifier |
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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: 20151125 Termination date: 20170727 |
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| CF01 | Termination of patent right due to non-payment of annual fee |