CN203117686U - Improved switching power supply controlled by computer parallel port - Google Patents
Improved switching power supply controlled by computer parallel port Download PDFInfo
- Publication number
- CN203117686U CN203117686U CN 201320171238 CN201320171238U CN203117686U CN 203117686 U CN203117686 U CN 203117686U CN 201320171238 CN201320171238 CN 201320171238 CN 201320171238 U CN201320171238 U CN 201320171238U CN 203117686 U CN203117686 U CN 203117686U
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- Prior art keywords
- pin
- switching power
- power supply
- parallel port
- relay
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- Expired - Fee Related
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Abstract
The utility model relates to an improved switching power supply controlled by a computer parallel port. The improved switching power supply controlled by the computer parallel port comprises the computer parallel port, a relay and a switching power supply; the relay comprises a control end and an output end; the control end comprises a first pin and a second pin; the output end comprises a third pin and a fourth pin; the computer parallel port is electrically connected with the first pin and the second pin of the control end of the relay; the third pin of the output end of the relay is electrically connected with a live wire of a mains supply; the switching power supply comprises an input end; the input end comprises a first pin and a second pin; the four pin of the output end of the relay is electrically connected with the second pin of the input end of the switching power supply; the first pin of the input end of the switching power supply is electrically connected with a zero line of the mains supply; the first pin of the control end of the relay is simultaneously and electrically connected with two data output ends of the computer parallel port; and the second pin of the control end of the relay is electrically connected with an earth terminal of the computer parallel port.
Description
Technical field
The utility model relates to a kind of Switching Power Supply of improved computer parallel port control.
Background technology
In the automatization test system field, the break-make that many times all can need the software control switch power supply, and then the break-make of the equipment that connects of gauge tap power supply generally all are to adopt control panel card control relay, and then the Switching Power Supply of pilot relay connection, but it is higher to control the integrated circuit board cost.If adopt the computer parallel port pilot relay, cost will be much lower, but because relay has certain requirement to the size of drive current, and the driving force of computer parallel port is not very big, might there be the not enough situation that drives, therefore has certain limitation.
The utility model content
The Switching Power Supply that the utility model provides a kind of improved computer parallel port simple and reliable, that practicality is stronger to control.
The utility model is achieved through the following technical solutions:
A kind of Switching Power Supply of improved computer parallel port control, comprise computer parallel port, relay and Switching Power Supply, described relay comprises control end and output terminal, described control end comprises 1 pin and 2 pin, described output terminal comprises 3 pin and 4 pin, described computer parallel port is electrically connected with 1 pin and 2 pin of described relay control end, 3 pin of described relay output end are electrically connected with the live wire of civil power, described Switching Power Supply comprises input end, described input end comprises 1 pin and 2 pin, 4 pin of described relay output end are electrically connected with 2 pin of Switching Power Supply input end, and 1 pin of described Switching Power Supply input end is electrically connected with the zero line of civil power; 1 pin of described relay control end is electrically connected simultaneously with two data output terminals of described computer parallel port, and 2 pin of described relay control end are electrically connected with the earth terminal of described computer parallel port.
Described relay is solid-state relay.
The Switching Power Supply of described computer parallel port control comprises four solid-state relays and four Switching Power Supplies.
The beneficial effect that the utility model brings is:
In the utility model, the Switching Power Supply of described a kind of improved computer parallel port control adopts the computer parallel port pilot relay, has substituted common control integrated circuit board, and the parallel port is the common configuration of general computing machine, and cost is more much lower than the control integrated circuit board; Because the computer parallel port driving force is limited, the utility model drives relay after with the two bits line parallel together, is equivalent to driving force and has increased one times, has improved reliability greatly in addition.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the functional-block diagram of the Switching Power Supply of a kind of improved computer parallel port control described in the utility model;
Fig. 2 is the circuit theory diagrams of the Switching Power Supply of a kind of improved computer parallel port control described in the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail:
Embodiment as the Switching Power Supply of a kind of improved computer parallel port control described in the utility model, as depicted in figs. 1 and 2, comprise computer parallel port, four relays and four Switching Power Supplies, described relay comprises control end and output terminal, described control end comprises 1 pin and 2 pin, described output terminal comprises 3 pin and 4 pin, described computer parallel port is electrically connected with 1 pin and 2 pin of described relay control end, 3 pin of described relay output end are electrically connected with the live wire of civil power, described Switching Power Supply comprises input end, described input end comprises 1 pin and 2 pin, 4 pin of described relay output end are electrically connected with 2 pin of Switching Power Supply input end, and 1 pin of described Switching Power Supply input end is electrically connected with the zero line of civil power; 1 pin of described relay control end is electrically connected simultaneously with two data output terminals of described computer parallel port, and 2 pin of described relay control end are electrically connected with the earth terminal of described computer parallel port.Because the computer parallel port driving force is limited, will drive relay behind the two bits line parallel together, is equivalent to driving force and has increased one times, has improved reliability greatly.
In the present embodiment, described relay is solid-state relay, no physics contact, and longer service life, more reliable, input end and output terminal have been realized electrical isolation, and be safer.
Claims (3)
1. the Switching Power Supply of an improved computer parallel port control, comprise computer parallel port, relay and Switching Power Supply, described relay comprises control end and output terminal, described control end comprises 1 pin and 2 pin, described output terminal comprises 3 pin and 4 pin, described computer parallel port is electrically connected with 1 pin and 2 pin of described relay control end, 3 pin of described relay output end are electrically connected with the live wire of civil power, described Switching Power Supply comprises input end, described input end comprises 1 pin and 2 pin, 4 pin of described relay output end are electrically connected with 2 pin of Switching Power Supply input end, and 1 pin of described Switching Power Supply input end is electrically connected with the zero line of civil power; 1 pin that it is characterized in that described relay control end is electrically connected simultaneously with two data output terminals of described computer parallel port, and 2 pin of described relay control end are electrically connected with the earth terminal of described computer parallel port.
2. the Switching Power Supply of improved computer parallel port control as claimed in claim 1 is characterized in that described relay is solid-state relay.
3. the Switching Power Supply of improved computer parallel port control as claimed in claim 2 is characterized in that the Switching Power Supply of described computer parallel port control comprises four solid-state relays and four Switching Power Supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320171238 CN203117686U (en) | 2013-03-28 | 2013-03-28 | Improved switching power supply controlled by computer parallel port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320171238 CN203117686U (en) | 2013-03-28 | 2013-03-28 | Improved switching power supply controlled by computer parallel port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203117686U true CN203117686U (en) | 2013-08-07 |
Family
ID=48898015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320171238 Expired - Fee Related CN203117686U (en) | 2013-03-28 | 2013-03-28 | Improved switching power supply controlled by computer parallel port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203117686U (en) |
-
2013
- 2013-03-28 CN CN 201320171238 patent/CN203117686U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20140328 |