CN204965320U - Computer USB power supply circuit - Google Patents
Computer USB power supply circuit Download PDFInfo
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- CN204965320U CN204965320U CN201520635960.5U CN201520635960U CN204965320U CN 204965320 U CN204965320 U CN 204965320U CN 201520635960 U CN201520635960 U CN 201520635960U CN 204965320 U CN204965320 U CN 204965320U
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- diode
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- electric capacity
- triode
- transformer
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Abstract
The utility model discloses a computer USB power supply circuit, including resistance R1, electric capacity C1, diode D1, triode Q1, diode ZD1, transformer T and emitting diode LED1, the diode D1 positive pole VCC that connects, electric capacity C1 is connected respectively to diode D1 negative pole, resistance R2, electric capacity C4, resistance R5 and transformer T coil L1, anodal and the triode Q1 collecting electrode of diode D5 is connected respectively to the transformer T coil L1 other end, diode D5 negative pole is the connecting resistance R5 other end and the electric capacity C4 other end respectively, triode Q1 base is the connecting resistance R2 other end respectively, triode Q2 collecting electrode and electric capacity C3, triode Q1 projecting pole is connecting resistance R1 and resistance R3 respectively. The utility model discloses computer USB power supply circuit is can the steady voltage in the output, and circuit structure is simple, and is with low costs, small, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of power circuit, specifically a kind of computing machine USB power source circuit.
Background technology
Universal along with notebook, frivolous be the research direction of each large computer vendors always, and simplifying of any circuit of computer-internal is the research emphasis of manufacturer, and wherein USB is as the requisite interface of current computing machine, the emphasis studied especially.
Utility model content
The purpose of this utility model is to provide a kind of computing machine USB power source circuit, 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 computing machine USB power source circuit, comprise resistance R1, electric capacity C1, diode D1, triode Q1, diode ZD1, transformer T and LED 1, described diode D1 positive pole connects power supply VCC, diode D1 negative pole connects electric capacity C1 respectively, resistance R2, electric capacity C4, resistance R5 and transformer T coil L1, the transformer T coil L1 other end connects diode D5 positive pole and triode Q1 collector respectively, diode D5 negative pole is the contact resistance R5 other end and the electric capacity C4 other end respectively, triode Q1 base stage is the contact resistance R2 other end respectively, triode Q2 collector and electric capacity C3, triode Q1 emitter is contact resistance R1 and resistance R3 respectively, the resistance R3 other end connects diode ZD1 positive pole and triode Q2 base stage respectively, triode Q2 emitter connects the electric capacity C1 other end respectively, the resistance R1 other end, diode D6 positive pole and electric capacity C2, the electric capacity C2 other end is connection transformer T coil L3 and diode ZD1 negative pole respectively, the transformer T coil L3 other end connects diode D6 negative pole and resistance R4 respectively, the resistance R4 other end connects the electric capacity C3 other end, described transformer T coil L2 one end connects electric capacity C5 respectively, resistance R6 and usb 1 pin, resistance R6 other end connecting luminous diode LED1 positive pole, LED 1 negative pole connects the electric capacity C5 other end respectively, USB interface 4 pin and diode D7 positive pole.
As further program of the utility model: described diode ZD1 is voltage stabilizing diode.
As the utility model further scheme: described power supply VCC voltage is 12V.
Compared with prior art, the beneficial effects of the utility model are: the utility model computing machine USB power source circuit can voltage stabilizing export while, circuit structure is simple, and cost is low, and volume is little, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of computing machine USB power source circuit.
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, in the utility model embodiment, a kind of computing machine USB power source circuit, comprise resistance R1, electric capacity C1, diode D1, triode Q1, diode ZD1, transformer T and LED 1, diode D1 positive pole connects power supply VCC, diode D1 negative pole connects electric capacity C1 respectively, resistance R2, electric capacity C4, resistance R5 and transformer T coil L1, the transformer T coil L1 other end connects diode D5 positive pole and triode Q1 collector respectively, diode D5 negative pole is the contact resistance R5 other end and the electric capacity C4 other end respectively, triode Q1 base stage is the contact resistance R2 other end respectively, triode Q2 collector and electric capacity C3, triode Q1 emitter is contact resistance R1 and resistance R3 respectively, the resistance R3 other end connects diode ZD1 positive pole and triode Q2 base stage respectively, triode Q2 emitter connects the electric capacity C1 other end respectively, the resistance R1 other end, diode D6 positive pole and electric capacity C2, the electric capacity C2 other end is connection transformer T coil L3 and diode ZD1 negative pole respectively, the transformer T coil L3 other end connects diode D6 negative pole and resistance R4 respectively, the resistance R4 other end connects the electric capacity C3 other end, transformer T coil L2 one end connects electric capacity C5 respectively, resistance R6 and usb 1 pin, resistance R6 other end connecting luminous diode LED1 positive pole, LED 1 negative pole connects the electric capacity C5 other end respectively, USB interface 4 pin and diode D7 positive pole.
Diode ZD1 is voltage stabilizing diode.
Power supply VCC voltage is 12V.
Principle of work of the present utility model is: refer to Fig. 1, power supply VCC provides working current to after resistance R2 triode Q1 base stage, after Q1 work, its collector is at transformer T coil L1 generation current, thus make transformer T coil L3 and L2 produce induced voltage, wherein the output of transformer T coil L2 carries out rectifying and wave-filtering by diode D7 and electric capacity C5, finally powers to USB interface.
Transformer T coil L3 and electric capacity C3, resistance R4 form the positive-feedback circuit of triode Q1, allow Q1 be in the higher-order of oscillation do not cutoff transformer T coil L1 switch and power, when loaded impedance change output voltage is raised time, transformer T coil L3, diode ZD1 sampling ratio comparatively make triode Q2 conducting, then Q base current reduces, and collector current also reduces, thus circuit load diminishes, USB interface place output voltage reduces, and reaches pressure stabilization function.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a computing machine USB power source circuit, comprise resistance R1, electric capacity C1, diode D1, triode Q1, diode ZD1, transformer T and LED 1, it is characterized in that, described diode D1 positive pole connects power supply VCC, diode D1 negative pole connects electric capacity C1 respectively, resistance R2, electric capacity C4, resistance R5 and transformer T coil L1, the transformer T coil L1 other end connects diode D5 positive pole and triode Q1 collector respectively, diode D5 negative pole is the contact resistance R5 other end and the electric capacity C4 other end respectively, triode Q1 base stage is the contact resistance R2 other end respectively, triode Q2 collector and electric capacity C3, triode Q1 emitter is contact resistance R1 and resistance R3 respectively, the resistance R3 other end connects diode ZD1 positive pole and triode Q2 base stage respectively, triode Q2 emitter connects the electric capacity C1 other end respectively, the resistance R1 other end, diode D6 positive pole and electric capacity C2, the electric capacity C2 other end is connection transformer T coil L3 and diode ZD1 negative pole respectively, the transformer T coil L3 other end connects diode D6 negative pole and resistance R4 respectively, the resistance R4 other end connects the electric capacity C3 other end, described transformer T coil L2 one end connects electric capacity C5 respectively, resistance R6 and usb 1 pin, resistance R6 other end connecting luminous diode LED1 positive pole, LED 1 negative pole connects the electric capacity C5 other end respectively, USB interface 4 pin and diode D7 positive pole.
2. computing machine USB power source circuit according to claim 1, is characterized in that, described diode ZD1 is voltage stabilizing diode.
3. computing machine USB power source circuit according to claim 1, is characterized in that, described power supply VCC voltage is 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520635960.5U CN204965320U (en) | 2015-08-20 | 2015-08-20 | Computer USB power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520635960.5U CN204965320U (en) | 2015-08-20 | 2015-08-20 | Computer USB power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204965320U true CN204965320U (en) | 2016-01-13 |
Family
ID=55060374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520635960.5U Expired - Fee Related CN204965320U (en) | 2015-08-20 | 2015-08-20 | Computer USB power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204965320U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552933A (en) * | 2016-02-19 | 2016-05-04 | 国家电网公司 | Electricity grid power compensation control device |
| CN106770236A (en) * | 2016-12-06 | 2017-05-31 | 百奥森（江苏）食品安全科技有限公司 | A kind of detection of veterinary drugs in food operating platform |
| CN108599590A (en) * | 2018-01-31 | 2018-09-28 | 商洛学院 | A kind of data transfer of computer accessory power supply |
| CN111025976A (en) * | 2019-12-16 | 2020-04-17 | 广州市科士达电源设备有限公司 | Power environment monitoring host |
-
2015
- 2015-08-20 CN CN201520635960.5U patent/CN204965320U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552933A (en) * | 2016-02-19 | 2016-05-04 | 国家电网公司 | Electricity grid power compensation control device |
| CN106770236A (en) * | 2016-12-06 | 2017-05-31 | 百奥森（江苏）食品安全科技有限公司 | A kind of detection of veterinary drugs in food operating platform |
| CN108599590A (en) * | 2018-01-31 | 2018-09-28 | 商洛学院 | A kind of data transfer of computer accessory power supply |
| CN111025976A (en) * | 2019-12-16 | 2020-04-17 | 广州市科士达电源设备有限公司 | Power environment monitoring host |
| CN111025976B (en) * | 2019-12-16 | 2021-03-16 | 广州市科士达电源设备有限公司 | Power environment monitoring host |
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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: 20160113 Termination date: 20160820 |