CN204145307U - For the electric supply installation of computer external equipment - Google Patents
For the electric supply installation of computer external equipment Download PDFInfo
- Publication number
- CN204145307U CN204145307U CN201420644577.1U CN201420644577U CN204145307U CN 204145307 U CN204145307 U CN 204145307U CN 201420644577 U CN201420644577 U CN 201420644577U CN 204145307 U CN204145307 U CN 204145307U
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- circuit
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- external equipment
- power
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Abstract
A kind of electric supply installation for computer external equipment, comprise relay, serial interface circuit, low-voltage DC power-switching circuit, amplifying circuit, the high voltage input terminal of relay, low-voltage DC power-switching circuit is connected with ac input end, serial interface circuit is connected with amplifying circuit, the signal output part of amplifying circuit is connected with the positive pole of the low-voltage control circuit in relay, positive pole in the low-voltage direct output of low-voltage DC power-switching circuit is connected with amplifying circuit, negative pole in the low-voltage direct output of low-voltage DC power-switching circuit is connected with the negative pole of the low-voltage control circuit in relay.Utilize serial interface circuit to detect the operating state of host computer, and utilize the detection signal control relay of serial interface circuit, thus can, after host computer shutdown, utilize relay automatically to close the power supply of external equipment.Stop waste of energy, and stop the potential safety hazard that causes because being energized for a long time.
Description
Technical field:
The utility model relates to electricity field, particularly relates to the power supply technique of computer external equipment, particularly a kind of electric supply installation for computer external equipment.
Background technology:
In prior art, the power supply of host computer and external equipment thereof is all utilize cable plug to patch AC Power supply socket to obtain.The thorough power-off of external equipment needs to be realized by the power supply of closing in AC Power supply socket.Use during middle closedown host computer and easily forget powered-down, cause external equipment to be energized for a long time and occur overheated phenomenon, and may cause damaging, external equipment also there will be aging, and wastes electric energy.
Summary of the invention:
Technical problem to be solved in the utility model is to provide a kind of electric supply installation for computer external equipment, and the described this electric supply installation for computer external equipment will solve the often energising for a long time and overheated, aging and waste the technical problem of electric energy of computer external equipment in prior art.
This electric supply installation for computer external equipment of the present utility model, comprise a relay, a serial interface circuit, a low-voltage DC power-switching circuit, an amplifying circuit, a delay circuit, an ac input end and at least one ac output end, described relay includes a low-voltage control circuit and a high-pressure work circuit, a coil is included in described low-voltage control circuit, described high-pressure work circuit has a high voltage input terminal and a high-voltage output end, a switch controlled by described coil is connected with between described high voltage input terminal and high-voltage output end, reduction voltage circuit is included in described low-voltage DC power-switching circuit, rectification circuit and voltage stabilizing circuit, described reduction voltage circuit is connected with described rectification circuit, rectification circuit is connected with described voltage stabilizing circuit, voltage stabilizing circuit has a low-voltage direct output, described amplifying circuit comprises a signal input part and a signal output part, wherein, described ac input end is connected with described high voltage input terminal, ac output end described in any one is all connected with described high-voltage output end, ac input end is connected with described low-voltage DC power-switching circuit again, a holding wire is had at least to be connected with the signal input part of described amplifying circuit in described serial interface circuit, the signal output part of amplifying circuit is connected with the input of described delay circuit, the output of delay circuit is connected with the positive pole of the low-voltage control circuit in relay, positive pole in the low-voltage direct output of low-voltage DC power-switching circuit is connected with amplifying circuit, negative pole in the low-voltage direct output of low-voltage DC power-switching circuit is connected with the negative pole of the low-voltage control circuit in relay.
Further, a photoelectric isolating circuit is provided with between serial interface circuit and the signal input part of amplifying circuit, described holding wire in serial interface circuit is connected with the input of photoelectric isolating circuit, and the output of photoelectric isolating circuit is connected with the signal input part of amplifying circuit.
Further, described photoelectric isolating circuit is made up of a photoelectrical coupler.
Further, described serial interface circuit is general serial communication bus interface circuit.
Further, described amplifying circuit comprises a triode, the base stage of described triode is connected with the signal input part of amplifying circuit, the emitter of triode is connected with the signal output part of amplifying circuit, and the collector electrode of triode is connected with the low-voltage direct output of low-voltage DC power-switching circuit.
Further, described delay circuit comprises a First-order Rc Circuit be made up of resistor and capacitor parallel connection.
Further, low-voltage direct output is connected with a display circuit.
Operation principle of the present utility model is: be connected with the serial ports of host computer by serial interface circuit, or general serial communication bus interface circuit is connected with the USB port of host computer, ac input end is connected with AC power, and the power line of external equipment is all connected to ac output end.During host computer work, serial interface circuit receives the working signal of host computer, by the low-voltage control circuit in amplifying circuit engage relay, the switch that coil in relay controls in high-pressure work circuit closes, and AC power is that external equipment is powered by high-pressure work circuit and ac output end.After host computer shutdown, serial interface circuit loses the working signal of host computer, by the low-voltage control circuit in amplifying circuit closed relay, the switch that coil in relay controls in high-pressure work circuit disconnects, and AC power is that external equipment is powered by high-pressure work circuit and ac output end.The photoelectric isolating circuit be arranged between serial interface circuit and the signal input part of amplifying circuit can isolate the low-voltage DC power-switching circuit in host computer and AC power and the utility model, ensures the safety of host computer.The delay circuit be arranged between the low-voltage control circuit in amplifying circuit and relay can cut out the rear high-pressure work circuit of time delay after such as 20 ~ 30 seconds in block system relay at host computer.
The utility model is compared with prior art, and its effect is actively with obvious.The utility model utilizes serial interface circuit to detect the operating state of host computer, and utilizes the detection signal control relay of serial interface circuit, thus can, after host computer shutdown, utilize relay automatically to close the power supply of external equipment.Stop waste of energy, and stop the potential safety hazard that causes because being energized for a long time.
Accompanying drawing illustrates:
Fig. 1 is the circuit theory schematic diagram of the electric supply installation for computer external equipment of the present utility model.
Fig. 2 is the principle schematic for the low-voltage DC power-switching circuit in the electric supply installation of computer external equipment of the present utility model.
Fig. 3 is the principle schematic for the amplifying circuit in the electric supply installation of computer external equipment of the present utility model.
Fig. 4 is the principle schematic for the photoelectric isolating circuit in the electric supply installation of computer external equipment of the present utility model.
Fig. 5 is the principle schematic for the delay circuit in the electric supply installation of computer external equipment of the present utility model.
Embodiment:
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4 and Fig. 5, electric supply installation for computer external equipment of the present utility model, comprise a relay 1, a serial interface circuit 2, a low-voltage DC power-switching circuit 3, an amplifying circuit 4, a delay circuit 5, an ac input end 7 and at least one ac output end 8, described relay 1 includes a low-voltage control circuit and a high-pressure work circuit, a coil is included in described low-voltage control circuit, described high-pressure work circuit has a high voltage input terminal and a high-voltage output end, a switch controlled by described coil is connected with between described high voltage input terminal and high-voltage output end, reduction voltage circuit is included in described low-voltage DC power-switching circuit 3, rectification circuit and voltage stabilizing circuit, described reduction voltage circuit is connected with described rectification circuit, rectification circuit is connected with described voltage stabilizing circuit, voltage stabilizing circuit has a low-voltage direct output, described amplifying circuit 4 comprises a signal input part and a signal output part, wherein, described ac input end 7 is connected with described high voltage input terminal, ac output end 8 described in any one is all connected with described high-voltage output end, ac input end 7 is connected with described low-voltage DC power-switching circuit 3 again, a holding wire is had at least to be connected with the signal input part of described amplifying circuit 4 in described serial interface circuit 2, the signal output part of amplifying circuit 4 is connected with the input of described delay circuit 5, the output of delay circuit 5 is connected with the positive pole of the low-voltage control circuit in relay 1, positive pole in the low-voltage direct output of low-voltage DC power-switching circuit 3 is connected with amplifying circuit 4, negative pole in the low-voltage direct output of low-voltage DC power-switching circuit 3 is connected with the negative pole of the low-voltage control circuit in relay 1.Dotted line in Fig. 1 represents alternating current passage.
Further, a photoelectric isolating circuit 9 is provided with between the signal input part of serial interface circuit 2 and amplifying circuit 4, described holding wire in serial interface circuit 2 is connected with the input of photoelectric isolating circuit 9, and the output of photoelectric isolating circuit 9 is connected with the signal input part of amplifying circuit 4.
Further, described photoelectric isolating circuit 9 is made up of a photoelectrical coupler 10.
Further, described serial interface circuit 2 is general serial communication bus interface circuit.
Further, described amplifying circuit 4 comprises a triode Q1, the base stage of described triode Q1 is connected with the signal input part of amplifying circuit 4, the emitter of triode Q1 is connected with the signal output part of amplifying circuit 4, and the collector electrode of triode Q1 is connected with the low-voltage direct output of low-voltage DC power-switching circuit 3.
Further, described delay circuit 5 comprises a First-order Rc Circuit be made up of resistor R1 and capacitor C1 parallel connection.
Further, low-voltage direct output is connected with a display circuit 11.
Concrete, the reduction voltage circuit in low-voltage DC power-switching circuit 3 is made up of bilateral decompression capacitor 6.
The operation principle of the present embodiment is: be connected by the serial ports of serial interface circuit 2 with host computer 12, or general serial communication bus interface circuit is connected with the USB port of host computer 12, ac input end 7 is connected with AC power 13, and the power line of external equipment 14 is all connected to ac output end 8.When host computer 12 works, serial interface circuit 2 receives the working signal of host computer 12, by the low-voltage control circuit in amplifying circuit 4 engage relay 1, the switch that coil in relay 1 controls in high-pressure work circuit closes, and AC power 13 is powered for external equipment 14 by high-pressure work circuit and ac output end 8.After host computer 12 shuts down, serial interface circuit 2 loses the working signal of host computer 12, by the low-voltage control circuit in amplifying circuit 4 closed relay 1, the switch that coil in relay 1 controls in high-pressure work circuit disconnects, and AC power 13 is powered for external equipment 14 by high-pressure work circuit and ac output end 8.Photoelectric isolating circuit 9 between the signal input part being arranged on serial interface circuit 2 and amplifying circuit 4 can isolate the low-voltage DC power-switching circuit 3 in host computer 12 and AC power 13 and the utility model, ensures the safety of host computer 12.Be arranged on delay circuit 5 between the low-voltage control circuit in amplifying circuit 4 and relay 1 can after host computer 12 is closed the high-pressure work circuit of time delay after such as 20 ~ 30 seconds in block system relay 1.
Claims (7)
1. the electric supply installation for computer external equipment, comprise a relay, a serial interface circuit, a low-voltage DC power-switching circuit, an amplifying circuit, a delay circuit, an ac input end and at least one ac output end, described relay includes a low-voltage control circuit and a high-pressure work circuit, a coil is included in described low-voltage control circuit, described high-pressure work circuit has a high voltage input terminal and a high-voltage output end, a switch controlled by described coil is connected with between described high voltage input terminal and high-voltage output end, reduction voltage circuit is included in described low-voltage DC power-switching circuit, rectification circuit and voltage stabilizing circuit, described reduction voltage circuit is connected with described rectification circuit, rectification circuit is connected with described voltage stabilizing circuit, voltage stabilizing circuit has a low-voltage direct output, described amplifying circuit comprises a signal input part and a signal output part, it is characterized in that: described ac input end is connected with described high voltage input terminal, ac output end described in any one is all connected with described high-voltage output end, ac input end is connected with described low-voltage DC power-switching circuit again, a holding wire is had at least to be connected with the signal input part of described amplifying circuit in described serial interface circuit, the signal output part of amplifying circuit is connected with the input of described delay circuit, the output of delay circuit is connected with the positive pole of the low-voltage control circuit in relay, positive pole in the low-voltage direct output of low-voltage DC power-switching circuit is connected with amplifying circuit, negative pole in the low-voltage direct output of low-voltage DC power-switching circuit is connected with the negative pole of the low-voltage control circuit in relay.
2. as claimed in claim 1 for the electric supply installation of computer external equipment, it is characterized in that: between serial interface circuit and the signal input part of amplifying circuit, be provided with a photoelectric isolating circuit, described holding wire in serial interface circuit is connected with the input of photoelectric isolating circuit, and the output of photoelectric isolating circuit is connected with the signal input part of amplifying circuit.
3., as claimed in claim 2 for the electric supply installation of computer external equipment, it is characterized in that: described photoelectric isolating circuit is made up of a photoelectrical coupler.
4., as claimed in claim 1 for the electric supply installation of computer external equipment, it is characterized in that: described serial interface circuit is general serial communication bus interface circuit.
5. as claimed in claim 1 for the electric supply installation of computer external equipment, it is characterized in that: described amplifying circuit comprises a triode, the base stage of described triode is connected with the signal input part of amplifying circuit, the emitter of triode is connected with the signal output part of amplifying circuit, and the collector electrode of triode is connected with the low-voltage direct output of low-voltage DC power-switching circuit.
6. as claimed in claim 1 for the electric supply installation of computer external equipment, it is characterized in that: described delay circuit comprises a First-order Rc Circuit be made up of resistor and capacitor parallel connection.
7., as claimed in claim 1 for the electric supply installation of computer external equipment, it is characterized in that: low-voltage direct output is connected with a display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420644577.1U CN204145307U (en) | 2014-10-31 | 2014-10-31 | For the electric supply installation of computer external equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420644577.1U CN204145307U (en) | 2014-10-31 | 2014-10-31 | For the electric supply installation of computer external equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204145307U true CN204145307U (en) | 2015-02-04 |
Family
ID=52421971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420644577.1U Expired - Fee Related CN204145307U (en) | 2014-10-31 | 2014-10-31 | For the electric supply installation of computer external equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204145307U (en) |
-
2014
- 2014-10-31 CN CN201420644577.1U patent/CN204145307U/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: 20150204 Termination date: 20181031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |