CN2745114Y - Computer controlled peripheral equipment power supply interface device - Google Patents
Computer controlled peripheral equipment power supply interface device Download PDFInfo
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- CN2745114Y CN2745114Y CN 200420084213 CN200420084213U CN2745114Y CN 2745114 Y CN2745114 Y CN 2745114Y CN 200420084213 CN200420084213 CN 200420084213 CN 200420084213 U CN200420084213 U CN 200420084213U CN 2745114 Y CN2745114 Y CN 2745114Y
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- power supply
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- peripheral hardware
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Abstract
The utility model discloses a peripheral power supplying interface device controlled by a computer, which comprises a group of joints (1) and joints (2) coming from the power supply of a computer, a peripheral power supplying interface joint (5) and joint (6), a control circuit (11), and a group of a first control signal joint (9) and joint (10) coming from the computer. The joint (9) and the joint (10) are respectively connected with the control terminal (7) and the control terminal (8) of the control circuit (11); switching on or switching off of control terminals (3) and (4) of the control circuit (11) are controlled by first control signals coming from the joint (9) and the joint (10). Peripheral power supplying interface joints (5) and (6) are connected in series with joints (1) and (2) by the control terminals (3) and (4) of the control circuit (11). By utilizing the utility model, a user can control the power supply of peripheral equipment by the computer, and the utility model can economize electric energy and safeguard safety for the peripheral equipment of the computer.
Description
Technical field
The utility model relates to the computer peripheral electric supply installation, is specifically related to a kind of computer-controlled peripheral hardware power supply interface device.
Background technology
In order to give full play to the various functions of computing machine, with the external unit of computing machine cooperating be indispensable.Computer peripheral is meant and is connected in main frame equipment in addition that it generally is divided into input equipment and output device, as scanner, display, printer, audio amplifier etc.These equipment are worked with main frame, but can't help computer power supply, but are directly powered by civil power, separate fully with the power supply of computing machine, and all have separately power switch to control its whether energized.When computing machine needs external unit to cooperate its work, need open main frame switch, display power supply switch and other external unit switches respectively; Equally, during shutdown, the host switch of must shutting down computer respectively, display power supply switch and other external unit switches.
At present, computing machine adopts the ATX power supply mostly, described ATX power supply comprises SB (Stand By, wait for) and PS-ON (Power Switch-ON, power switch starts) and other power supply signal, wherein, the SB signal is the signal that power supply electrifying just produces, it mainly still will keep the circuit chip of work for computer-internal under dormant state, for example the power supply supervisory circuit chip uses, so that realize the wake operation of computing machine; Described PS-ON signal is the control signal of ATX power supply, is used to control the activation manipulation to other power supply signal of ATX power supply except that the SB signal.The PS-ON signal can be by computer program and described power supply supervisory circuit chip controls at present, for example controlling the PS-ON signal by program with instant or mode regularly makes the ATX power supply quit work except that the other parts of SB signal, be in dormant state, and by power supply supervisory circuit reviving by this signal controlling computing machine.
Yet, for computing machine, even computing machine is in the dormant state of inoperative, coupled external device (ED), for example USB dish, portable hard drive, printer etc. are still in running order, can't realize the synchro control of peripheral hardware and main frame duty, more can't realize the programmed control of external unit duty, promptly whether work with the programmed control external unit as required.Because the common trait of external unit is to be connected with computing machine by signal wire or power lead, for realizing above-mentioned control, if by the interface of above-mentioned signal wire or power lead is controlled and can be achieved the goal.Yet the Peripheral Interface that active computer provides is without any control device, thereby is difficult to finish above-mentioned task.
Summary of the invention
For solving the problem that interface that the aforementioned calculation machine provided can not be program control, the utility model provides a kind of computer-controlled peripheral hardware power supply interface device, this device can be realized the programmed control of power supply signal, make the external unit that is connected be in identical duty with computing machine automatically, further realize the programmed control of external unit duty.
For this reason, the utility model provides following technical scheme:
A kind of computer-controlled peripheral hardware power supply interface device, comprise one group of joint (1) and joint (2) from computer power supply, peripheral hardware power supply socket joint (5) and joint (6), control circuit (11) and one group of the first control signal joint (9) and joint (10) from computing machine, described joint (9) and joint (10) are connected control end (7), the control end (8) of described control circuit (11) respectively, being switched on or switched off of the controlled end (3) by controlling described control circuit (11) from first control signal of described joint (9) and joint (10), (4); Described peripheral hardware power supply socket joint (5) is connected with joint (2) with described joint (1) with controlled end (3), (4) of joint (6) by described control circuit (11).
Alternatively, described device also comprises: one of serial connection and gate drive circuit (16) in the line of described joint (9) and control end (7), describedly be connected with control end 7 with the output terminal (15) of gate drive circuit (16), described and input end (13), (14) of gate drive circuit (16) are connected described joint (9) respectively and from the second control signal joint (12) of computing machine.
Alternatively, described device also comprises: one of serial connection and gate drive circuit (20) in the line between described joint (10) and control end (8), describedly be connected with control end (8) with the output terminal (17) of gate drive circuit (20), described and input end (18), (19) of gate drive circuit (20) are connected described joint 10 respectively and from the 3rd control signal joint (21) of computing machine.
Alternatively, described device also comprises: be connected in series respectively in the line between described joint (9) and control end (7), described joint (10) and control end (8) one with gate drive circuit (16) and with gate drive circuit (20), describedly be connected with control end (7) with the output terminal (15) of gate drive circuit (16), described and input end (13), (14) of gate drive circuit (16) are connected described joint (9) respectively and from the second control signal joint (12) of computing machine; Describedly be connected with control end (8) with the output terminal (17) of gate drive circuit (20), described and input end (18), (19) of gate drive circuit (20) are connected described joint (10) respectively and from the 3rd control signal joint (21) of computing machine.
Preferably, described first control signal joint (9) and joint (10) for computer-internal power supply output can dormancy the power supply signal joint.
Alternatively, described peripheral hardware power supply socket comprises the signal line group joint.
Alternatively, described control circuit is a control relay circuit.
Preferably, described control relay circuit comprises the ON-OFF control circuit that is connected with described relay.
Alternatively, described control circuit comprises photoelectrical coupler and bidirectional triode thyristor, and the output terminal of described photoelectrical coupler connects the control end of described bidirectional triode thyristor.
When a plurality of peripheral hardwares were powered socket, described a plurality of peripheral hardwares power supply sockets were connected in parallel.
The technical scheme that provides by above the utility model as can be seen, the computer-controlled peripheral hardware power supply interface of the utility model device is by computer software control.Like this, when the main frame power connection, can whether give the control circuit feed by the internal electric source output terminal of software control computing machine, external unit work if desired, then make the internal electric source output terminal of computing machine give the control circuit feed, thereby connect the peripheral hardware power supply that the peripheral hardware power connection is connected, start computer peripheral; Otherwise, disconnect the peripheral hardware power supply that the peripheral hardware power connection is connected, external unit is closed.When the main frame power supply was closed automatically, the computer-internal power supply no longer included voltage and exports to control circuit, and control circuit is disconnected and being connected of peripheral hardware power connection, thus the peripheral hardware power supply that disconnection peripheral hardware power connection is connected, and external unit is closed automatically.Like this, realize the programmed control of external unit power supply signal, external unit can have been overcome because the generation of external unit is closed in operator's carelessness with main frame energized or deenergization, avoided equipment to be damaged, also saved electric energy simultaneously.
Description of drawings
Fig. 1 is the theory diagram of the computer-controlled peripheral hardware power supply interface of the utility model device;
Fig. 2 a is the utility model first embodiment theory diagram;
Fig. 2 b is the realization block diagram of first embodiment shown in Fig. 2 a;
Fig. 3 a is the utility model second embodiment theory diagram;
Fig. 3 b is the realization block diagram of second embodiment shown in Fig. 3 a;
Fig. 4 is the utility model the 3rd embodiment theory diagram;
Fig. 5 is the peripheral hardware power supply socket first example structure synoptic diagram in the utility model device;
Fig. 6 is the peripheral hardware power supply socket second example structure synoptic diagram in the utility model device;
Fig. 7 is the utility model the 4th embodiment circuit theory diagrams;
Fig. 8 is the utility model the 5th embodiment circuit theory diagrams;
Fig. 9 is the utility model the 6th embodiment circuit theory diagrams.
Embodiment
For those of ordinary skills being understood and implementing the utility model, now depicted in greater detail embodiment in conjunction with the accompanying drawings can more easily understand the purpose of this utility model and technical scheme and effect of the present utility model by these embodiment those skilled in the art.
With reference to Fig. 1, Fig. 1 is the theory diagram of the computer-controlled peripheral hardware power supply interface of the utility model device:
Comprise one group of joint 1 and joint 2, peripheral hardware power supply socket joint 5 and joint 6, control circuit 11 and one group of joint 9 and joint 10 from first control signal of computing machine from computer power supply.Described joint 1 and joint 2 feed-ins are from the electric signal of computer-internal power supply, for example+5V ,+12V ,+3V ,-6V etc., above-said current signal offers the joint 5 and the joint 6 of peripheral hardware power supply socket by control circuit 11, be that peripheral hardware is powered by joint 5 and joint 6.Described joint 9 and joint 10 are connected control end 7, the control end 8 of described control circuit 11 respectively.Described the internal control principle signal of described control circuit 11 among Fig. 1, being switched on or switched off of controlled end 3,4 of described control circuit 11 promptly has been provided by first control signal that provides from described joint 9 and joint 10, by computing machine.Described peripheral hardware power supply socket joint 5 is connected with joint 2 with described joint 1 with the controlled end 3,4 of joint 6 by described control circuit 11.
First control signal from computing machine that inserts by joint 9 or joint 10 is communicated with the controlled terminal 3,4 of control circuit 11 or disconnects, thereby peripheral hardware power supply socket joint 5,6 is linked to each other with joint 2 with joint 1 from computer power supply respectively or disconnects.Such as, the earth terminal that joint 10 is connected computing machine, joint 9 connects computer-internal except that other forward power output end the+5VSB power supply, like this, after computing machine is opened, the computer-internal power supply provides first control signal, thereby controlled terminal 3,4 is communicated with, and then makes 5,6 utilizations of peripheral hardware power supply socket joint provide power supply from the electric signal of joint 1 and joint 2 acquisitions for peripheral hardware; After computing machine was in dormancy or shutdown, the computer-internal power supply no longer provided first control signal, thereby controlled terminal 3,4 is disconnected, and made peripheral hardware power supply socket joint 5,6 no longer provide power supply for peripheral hardware.Computer peripheral is connected to peripheral hardware power supply socket joint 5 and joint 6, just can opens or close by the computer control external unit.In the reality, the electric signal that obtains from joint 1 and joint 2 can be a computer-internal except that other forward power output end the+5VSB power supply, also can be other power supply that does not have sleep mode.
By first control signal of hardware generation from computing machine, can make computing machine when work, connect the external unit power supply, make external unit and computing machine synchronous working; Computing machine cuts out the external unit power supply in dormancy or when cutting out, and has both saved electric energy, has guaranteed the safety of external unit simultaneously again.Among the present invention, described first control signal adopt the output of computer-internal power supply can dormancy power supply signal.
Also can be further by first control signal of computer software control generation from computing machine, such as, when the computing machine operate as normal, export high and low level by certain pin of the inner input/output circuitry of software control and be connected to joint 9, like this, just can make computing machine when work by the control of peripheral hardware socket being selected to open or close the power supply of certain computer peripheral equipment.
With reference to Fig. 2 a, Fig. 2 a is a first embodiment of the present invention theory diagram:
One of serial connection and gate drive circuit 16 (also can be AND circuit) in the line of joint 9 and control end 7, be connected with control end 7 with the output terminal 15 of gate drive circuit 16, with the input end 13,14 of gate drive circuit 16 jointings 9 and from second control signal (work indicator signal) joint 12 of computing machine respectively.
In actual applications, joint 10 can be connected the earth terminal of computing machines, other forward power output end of the inside that joint 9 connects computing machines and+5VSB isolated from power, joint 12 is by computer software control.When the computing machine operate as normal, joint 9 and joint 12 provide normal power supply signal and work indicator signal respectively, suppose that above-mentioned signal high level is for effective, then this moment and gate drive circuit 16 are exported high level, control section in the control circuit 11 is worked, its controlled end 3,4 is connected, and peripheral hardware power supply socket joint 5,6 is the external unit power supply from described joint 1 and joint 2 acquisition electric signal.If computing machine enters into dormant state or computing machine does not provide the work indicator signal, then with gate drive circuit 16 output low levels, control section in the control circuit 11 is inoperative, its controlled end 3,4 disconnects, and peripheral hardware power supply socket joint 5,6 can't be the external unit power supply from described joint 1 and joint 2 acquisition electric signal.In above-mentioned and gate drive circuit 16 reality multiple implementation is arranged, for example add the one-level not gate and drive and realize by one-level Sheffer stroke gate (being positive Sheffer stroke gate or negative rejection gate in this example).Shown in Fig. 2 b:
Suppose to adopt the scheme shown in Fig. 2 b, after computing machine is opened, joint 9 is input as high level, at this moment, if computer software control joint 12 is input as high level, then control end 7 is a high level, because control end 8 is a low level, controlled terminal 3,4 is communicated with, makes external unit and computing machine synchronous working; If computer software control joint 12 is input as low level, then control end 7 is a low level, also because control end 8 is a low level, controlled terminal 3,4 is disconnected, and external unit is closed;
When computing machine in dormancy or when closing, joint 9 is input as low level, and controlled terminal 3,4 is disconnected, and external unit is closed.
In the scheme of Fig. 2 a and Fig. 2 b, other forward power output end of the inside that joint 9 connects computing machines and+5VSB isolated from power, because joint 12 is by computer software control, then the computer-internal power supply that connected of joint 9 can have sleep mode, also can not have sleep mode.
With reference to Fig. 3 a, Fig. 3 a is a second embodiment of the present invention theory diagram:
In this example, be serially connected on another control line with gate drive circuit, promptly be connected in series one and gate drive circuit 20 in the line between joint 10 and control end 8, be connected with control end 8 with the output terminal 17 of gate drive circuit 20, be connected described joint 10 respectively with the input end 18,19 of gate drive circuit 20 and from the 3rd control signal joint 21 of computing machine.
In actual applications, the forward power output end of the inside that the earth terminal that joint 10 can be connected computing machines, joint 9 connect computing machines and+5VSB isolated from power, joint 21 is by computer software control, in this example, the level of the control signal that provides by joint 21 is effective.Can add the one-level not gate by one-level Sheffer stroke gate (being negative Sheffer stroke gate or negative rejection gate in this example) with gate drive circuit 20 and drive realization, can certainly be otherwise.Shown in Fig. 3 b:
After computing machine was opened, joint 9 was input as high level, and joint 10 is input as low level, at this moment, if computer software control joint 21 is input as low level, then control end 8 is a low level, and control end 7 is a high level, and controlled terminal 3,4 is communicated with, and makes external unit and computing machine synchronous working; If computer software control joint 21 is input as high level, then control end 8 is a high level, and control end 7 is a high level, and controlled terminal 3,4 is disconnected, and external unit is closed;
When computing machine in dormancy or when closing, joint 9 is input as low level, and controlled terminal 3,4 is disconnected, and external unit is closed.
With reference to Fig. 4, Fig. 4 is a third embodiment of the present invention theory diagram:
Can be in two control lines polyphone and gate drive circuit separately, promptly be connected in series respectively in the line between joint 9 and control end 7, joint 10 and control end 8 one with gate drive circuit 16 and with gate drive circuit 20.Wherein:
Be connected with control end 7 with the output terminal 15 of gate drive circuit 16, be connected described joint 9 respectively with the input end 13,14 of gate drive circuit 16 and from the second control signal joint 12 of computing machine;
Be connected with control end 8 with the output terminal 17 of gate drive circuit 20, input end 18,19 connects described joint 10 respectively and from the 3rd control signal joint 21 of computing machine.
Can be to the control mode of the control end 7,8 of control circuit 11 with noted earlier similar, just, do not repeat them here from second control signal of joint 12 with from the 3rd control signal acting in conjunction of joint 21.
The present technique field personnel know, computing machine can be connected to a plurality of external equipments simultaneously, as display, printer, and scanner, portable hard drive etc.For computing machine can both be controlled these peripheral hardwares, the utility model can provide many group peripheral hardware power supply sockets, referring to figs. 1 to Fig. 4.A plurality of peripheral hardware power supply sockets are connected in parallel, and each peripheral hardware power supply socket all has joint 5 and joint 6 separately, make and calculate function simultaneously to these control that needs the peripheral hardware of same power supply signal to open or close.Further, described peripheral hardware power supply socket can also comprise the signal line group joint.
Fig. 5 is the peripheral hardware power supply socket first example structure synoptic diagram in the utility model device, and the peripheral hardware power supply socket that this figure provides comprises control signal and the power supply signal of peripheral hardware and other signal wire of peripheral hardware needs are provided.
Socket shown in Figure 5 comprises joint 1 and joint 2 from the computer-internal power supply, from the joint 9 and the joint 10 of computing machine first control signal, and peripheral hardware power supply socket joint 5 and joint 6; In addition, also comprise data line group A and data line group A ', data line group A directly links to each other with data line group A ' or links to each other by driving, for peripheral hardware provides other desired signals from computer-internal.
In order to adapt to the demand of different peripheral, also can adopt structure shown in Figure 6 to power interface.
Among Fig. 6, comprise joint 1 and joint 2 from computer power supply, from the first control signal joint 9 and the joint 10 of computing machine, also comprise peripheral hardware power supply socket A, B, C, data line group A, data line B and C introduce peripheral hardware power supply socket A, B and C respectively.The structure of concrete socket A, B or C is with reference to figure 5.
Need to prove that as required, the peripheral hardware socket can be designed as different purposes, the power supply or the power supply plus signal that are used for adaptive different peripheral provide, such as: the AC socket that printer is required, the USB interface that portable hard drive is required etc.
As seen by top described, in fact the control circuit 11 in the utility model has played the effect of gauge tap.By being switched on or switched off of this gauge tap control peripheral hardware power supply socket, the closed or disconnection of this gauge tap is by computer software control.
The present technique field personnel know, has multiple device can play the effect of switch in the prior art, includes the switch and the contactless switch of contact, such as: relay, controllable silicon etc.
Reference the 4th embodiment circuit theory diagrams shown in Figure 7:
In this embodiment, control circuit is a control relay circuit, mainly is made up of relay K 1.
Joint 1 and joint 2 are from computer power supply, in this example, joint 9 is that the power supply of computer-internal power supply+12V (also can be other electric signal, as+6V, this depends on the operating voltage of relay), should+power supply and the computer-internal accessory power supply+12V of 12V export isolation, and joint 10 is an earth terminal.Control end 7,8 is succeeded the input end of electrical equipment K1 respectively, and controlled end 3,4 is succeeded a normally opened contact of electrical equipment, when relay K 1 work, and the described closing of contact.
For making relay control more reliable and prolonging its life-span, the application provides the 5th embodiment circuit theory diagrams shown in Figure 8.
In this embodiment, control relay circuit comprises the ON-OFF control circuit that is connected with relay K 1.This ON-OFF control circuit comprises the current rectifying and wave filtering circuit of triode Q, diode D1 and D2 and resistance R and capacitor C composition; the input end of described control circuit connects the first control signal joint 9 and the joint 10 from computing machine; but the signal in this example is dormancy+12V power supply signal; output terminal connects the input end of relay K 1, and capacitor C 1 plays further protective relay contact.
Like this, joint 9 just can by the computer-internal power transformer directly output+12V voltage controls, make the prime process high-frequency rectification of the output rectification of computer-internal power transformer, again through directly linking the input end of relay after the filtering, fully guaranteed the power supply of relay K 1 input end+12V and area of computer aided power supply+12V exports isolation.
Reference the 6th embodiment circuit theory diagrams shown in Figure 9:
In this embodiment, control circuit comprises photoelectrical coupler OPTOTRIAC and bidirectional triode thyristor TRIAC, and the output terminal of described photoelectrical coupler connects the control end of described bidirectional triode thyristor.Photoelectrical coupler OPTOTRIAC is the dedicated trigger optocoupler of bidirectional triode thyristor TRIAC.
Joint 1 and joint 2 are from computer power supply, joint 9 is to draw one tunnel output before computer-internal power transformer+5V rectification output, behind diode D1 and capacitor C 2 rectifying and wave-filterings, enter photoelectrical coupler OPTOTRIAC, because this optocoupler itself is trigger circuit, it passes to bidirectional triode thyristor TRIAC with signal, and peripheral hardware power supply socket joint 5 and joint 6 are communicated with or disconnection.
Though described the utility model by embodiment, those of ordinary skills know, the utility model has many distortion and variation and does not break away from spirit of the present utility model, wishes that appended claim comprises these distortion and variation and do not break away from spirit of the present utility model.
Claims (10)
1, a kind of computer-controlled peripheral hardware power supply interface device comprises one group of joint from computer power supply (1) and joint (2), it is characterized in that, also comprises:
Peripheral hardware power supply socket joint (5) and joint (6), control circuit (11) and one group of the first control signal joint (9) and joint (10) from computing machine, described joint (9) and joint (10) are connected control end (7), the control end (8) of described control circuit (11) respectively, being switched on or switched off of the controlled end (3) by controlling described control circuit (11) from first control signal of described joint (9) and joint (10), (4); Described peripheral hardware power supply socket joint (5) is connected with joint (2) with described joint (1) with controlled end (3), (4) of joint (6) by described control circuit (11).
2, computer-controlled peripheral hardware power supply interface device according to claim 1, it is characterized in that also comprising: one of serial connection and gate drive circuit (16) in the line of described joint (9) and control end (7), describedly be connected with control end 7 with the output terminal (15) of gate drive circuit (16), described and input end (13), (14) of gate drive circuit (16) are connected described joint (9) respectively and from the second control signal joint (12) of computing machine.
3, computer-controlled peripheral hardware power supply interface device according to claim 1, it is characterized in that also comprising: one of serial connection and gate drive circuit (20) in the line between described joint (10) and control end (8), describedly be connected with control end (8) with the output terminal (17) of gate drive circuit (20), described and input end (18), (19) of gate drive circuit (20) are connected described joint 10 respectively and from the 3rd control signal joint (21) of computing machine.
4, computer-controlled peripheral hardware power supply interface device according to claim 1, it is characterized in that also comprising: be connected in series respectively in the line between described joint (9) and control end (7), described joint (10) and control end (8) one with gate drive circuit (16) and with gate drive circuit (20), describedly be connected with control end (7) with the output terminal (15) of gate drive circuit (16), described and input end (13), (14) of gate drive circuit (16) are connected described joint (9) respectively and from the second control signal joint (12) of computing machine; Describedly be connected with control end (8) with the output terminal (17) of gate drive circuit (20), described and input end (18), (19) of gate drive circuit (20) are connected described joint (10) respectively and from the 3rd control signal joint (21) of computing machine.
5, according to claim 1,2,3 or 4 described computer-controlled peripheral hardware power supply interface devices, it is characterized in that, described first control signal joint (9) and joint (10) for computer-internal power supply output can dormancy the power supply signal joint or power supply signal joint that can not dormancy.
6, computer-controlled peripheral hardware power supply interface device according to claim 5 is characterized in that, described peripheral hardware power supply socket comprises the signal line group joint.
7, computer-controlled peripheral hardware power supply interface device according to claim 6 is characterized in that described control circuit is a control relay circuit.
8, computer-controlled peripheral hardware power supply interface device according to claim 7 is characterized in that described control relay circuit comprises the ON-OFF control circuit that is connected with described relay.
9, computer-controlled peripheral hardware power supply interface device according to claim 6 is characterized in that described control circuit comprises photoelectrical coupler and bidirectional triode thyristor, and the output terminal of described photoelectrical coupler connects the control end of described bidirectional triode thyristor.
10, computer-controlled peripheral hardware power supply interface device according to claim 9 is characterized in that, described peripheral hardware power supply socket is a plurality of, and each peripheral hardware power supply socket comprises joint (5) and joint (6), and described a plurality of peripheral hardware power supply sockets are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420084213 CN2745114Y (en) | 2004-07-22 | 2004-07-22 | Computer controlled peripheral equipment power supply interface device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420084213 CN2745114Y (en) | 2004-07-22 | 2004-07-22 | Computer controlled peripheral equipment power supply interface device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2745114Y true CN2745114Y (en) | 2005-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420084213 Expired - Fee Related CN2745114Y (en) | 2004-07-22 | 2004-07-22 | Computer controlled peripheral equipment power supply interface device |
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| CN (1) | CN2745114Y (en) |
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2004
- 2004-07-22 CN CN 200420084213 patent/CN2745114Y/en not_active Expired - Fee Related
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