CN204790989U - Computer data interface electric current constant voltage equipment - Google Patents
Computer data interface electric current constant voltage equipment Download PDFInfo
- Publication number
- CN204790989U CN204790989U CN201520395505.2U CN201520395505U CN204790989U CN 204790989 U CN204790989 U CN 204790989U CN 201520395505 U CN201520395505 U CN 201520395505U CN 204790989 U CN204790989 U CN 204790989U
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- resistance
- chip
- triode
- constant
- constant voltage
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- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
Abstract
The utility model discloses a computer data interface electric current constant voltage equipment, including USB plug, USB socket, constant voltage chip, constant current chip, first resistance to the 5th resistance, first electric capacity, second electric capacity, first triode, second triode and diode cluster one -tenth, mainly use constant voltage chip and constant current chip to carry out constant current and constant voltage, during operation, USB socket current potential are less than 4.2V, and the output of constant current chip does not have output current, so the second triode ends, constant voltage chip negative pole is held unsettledly and is played the effect of constant current source. Compared with the prior art, the utility model discloses can be effectual current -voltage in the use of improvement USB data line stable, make USB data interface can avoid when using that the connection that leads to the fact of temperature is not unstable, data transmission is slow, the not smooth problem of data transmission because of current -voltage, convenient to use has the value of popularization and application.
Description
Technical field
The utility model relates to a kind of computer circuit structure, particularly relates to a kind of computer data interface electric current constant-voltage equipment.
Background technology
USB USB (universal serial bus), and its Chinese is referred to as " logical get lines crossed ", is an external bus standard, for connection and the communication of specification computer and external unit.It is the interfacing being applied in PC field.The plug and play of USB interface support equipment and warm connection function.But in prior art, USB interface causes data to transmit not smooth, slow, that connection is unstable situation usually because current/voltage is unstable, therefore, there is room for improvement.
Utility model content
The purpose of this utility model is just to provide a kind of computer data interface electric current constant-voltage equipment to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises USB plug, USB socket, constant voltage chip, constant current chip, first resistance is to the 5th resistance, first electric capacity, second electric capacity, first triode, second triode and diode composition, the output terminal of described constant voltage chip simultaneously with the positive pole of described USB socket, the first end of described first resistance is connected with the first end of described first electric capacity, the input end of described constant voltage chip is connected with the first end of described second resistance, the negative pole of described constant voltage chip is connected with the first end of described 3rd resistance and the collector of described second triode simultaneously, the negative pole of described first electric capacity simultaneously with the negative pole of described USB plug, the negative pole of described USB socket, the emitter of described second triode, the first end of described 5th resistance is connected with the negative pole of described constant current chip, second end of described second resistance is connected with described second end of the 3rd resistance and the positive pole of described diode simultaneously, the negative pole of described diode is connected with the positive pole of described USB plug simultaneously, the base stage of described first triode is connected with the second end of described first resistance, the emitter of described first triode is connected with the positive pole of described constant current chip, the input end of described constant current chip is connected with the first end of described second electric capacity, second end of described second electric capacity simultaneously with the output terminal of described constant current chip, the first end of described 4th resistance is connected with the first end of described 5th resistance, second end of described 4th resistance is connected with the base stage of described second triode.
The beneficial effects of the utility model are:
The utility model is a kind of computer data interface electric current constant-voltage equipment, compared with prior art, the current/voltage that the utility model can effectively improve in USB data line use procedure is stablized, usb data interface can be avoided in use because of current/voltage, and unstable, the data transmission of the connection that causes of temperature is not slowly, data transmit slack problem, easy to use, there is the value applied.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises USB plug, USB socket, constant voltage chip IC 1, constant current chip IC2, first resistance R1 is to the 5th resistance R5, first electric capacity C1, second electric capacity C2, first triode VT1, second triode VT2 and diode VD forms, the output terminal of constant voltage chip IC 1 simultaneously with the positive pole of USB socket, the first end of the first resistance R1 is connected with the first end of the first electric capacity C1, the input end of constant voltage chip IC 1 is connected with the first end of the second resistance R2, the negative pole of constant voltage chip IC 1 is connected with the first end of the 3rd resistance R3 and the collector of the second triode VT2 simultaneously, the negative pole of the first electric capacity C1 simultaneously with the negative pole of USB plug, the negative pole of USB socket, the emitter of the second triode VT2, the first end of the 5th resistance R5 is connected with the negative pole of constant current chip IC2, second end of the second resistance R2 is connected with second end of the 3rd resistance R3 and the positive pole of diode VD simultaneously, the negative pole of diode VD is connected with the positive pole of USB plug simultaneously, the base stage of the first triode VT1 is connected with second end of the first resistance R1, the emitter of the first triode VT1 is connected with the positive pole of constant current chip IC2, the input end of constant current chip IC2 is connected with the first end of the second electric capacity C2, second end of the second electric capacity C2 simultaneously with the output terminal of constant current chip IC2, the first end of the 4th resistance R4 is connected with the first end of the 5th resistance R5, second end of the 4th resistance R4 is connected with the base stage of the second triode VT2.
During utility model works, main use constant voltage chip IC 1 and constant current chip IC2 carry out constant current and constant voltage, during work, USB socket electromotive force is lower than 4.2V, the output terminal no-output electric current of constant current chip IC2, so the second triode VT2 ends, constant voltage chip IC 1 negative pole end is unsettled and play constant current source.
Component parameter of the present utility model is selected as follows:
First resistance R1 is 100 Ω, the second resistance R2 is 400 Ω, the 3rd resistance R3 is 500 Ω, the 4th resistance R4 is 2k Ω, the 5th resistance R5 is 27k Ω, the first electric capacity C1 is 300uf, the second electric capacity C2 is 470uf, the first triode VT1 and the second triode VT2 is PNP type triode, constant voltage chip IC 1 model is LM317T, constant current chip IC2 model is LM3420-4.2, diode VD model is IN4001.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. a computer data interface electric current constant-voltage equipment, comprise USB plug and USB socket, it is characterized in that: also comprise constant voltage chip, constant current chip, first resistance is to the 5th resistance, first electric capacity, second electric capacity, first triode, second triode and diode composition, the output terminal of described constant voltage chip simultaneously with the positive pole of described USB socket, the first end of described first resistance is connected with the first end of described first electric capacity, the input end of described constant voltage chip is connected with the first end of described second resistance, the negative pole of described constant voltage chip is connected with the first end of described 3rd resistance and the collector of described second triode simultaneously, the negative pole of described first electric capacity simultaneously with the negative pole of described USB plug, the negative pole of described USB socket, the emitter of described second triode, the first end of described 5th resistance is connected with the negative pole of described constant current chip, second end of described second resistance is connected with described second end of the 3rd resistance and the positive pole of described diode simultaneously, the negative pole of described diode is connected with the positive pole of described USB plug simultaneously, the base stage of described first triode is connected with the second end of described first resistance, the emitter of described first triode is connected with the positive pole of described constant current chip, the input end of described constant current chip is connected with the first end of described second electric capacity, second end of described second electric capacity simultaneously with the output terminal of described constant current chip, the first end of described 4th resistance is connected with the first end of described 5th resistance, second end of described 4th resistance is connected with the base stage of described second triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520395505.2U CN204790989U (en) | 2015-06-10 | 2015-06-10 | Computer data interface electric current constant voltage equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520395505.2U CN204790989U (en) | 2015-06-10 | 2015-06-10 | Computer data interface electric current constant voltage equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204790989U true CN204790989U (en) | 2015-11-18 |
Family
ID=54530994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520395505.2U Expired - Fee Related CN204790989U (en) | 2015-06-10 | 2015-06-10 | Computer data interface electric current constant voltage equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204790989U (en) |
-
2015
- 2015-06-10 CN CN201520395505.2U patent/CN204790989U/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: 20151118 Termination date: 20160610 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |