CN201044437Y - Remote control switch controlling make and break of load by single phase wire - Google Patents
Remote control switch controlling make and break of load by single phase wire Download PDFInfo
- Publication number
- CN201044437Y CN201044437Y CNU2007200497221U CN200720049722U CN201044437Y CN 201044437 Y CN201044437 Y CN 201044437Y CN U2007200497221 U CNU2007200497221 U CN U2007200497221U CN 200720049722 U CN200720049722 U CN 200720049722U CN 201044437 Y CN201044437 Y CN 201044437Y
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- remote control
- control switch
- phase line
- input
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/05—Capacitor coupled rectifiers
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Abstract
The utility model relates to a remote switch controlling load on-off through single-phase line, comprising a remote receiver, a center controller, an AC-DC converting circuit supplying power for the remote switch when load is not switched on, and a driving and power supply feedback circuit which provides a current path for the load when the load is switched on and simultaneously provides power for the remote switch. The driving and power supply feedback circuit is serially connected between a phase line input end and a phase line output end, is controlled by the output signals of the center controller, and generates DC voltage connected between a power end an earthing end of the remote switch. The implementation of the utility model has the following advantages that: the utility model is short in initialization time, ultralow in standby power consumption and stable in operation, adapts to large current load impact, and solves the problem of cold flicker phenomenon caused by the isasteric load of a power saving lamp when the lamp is turned off.
Description
Technical field
The utility model relates to ac power switch, more particularly, relates to a kind of remote control switch of phase line control load break-make.
Background technology
In family expenses or other applications, the switch of power supply is controlled by mechanical encased switch traditional, that install on the wall usually, this switch is only controlled a line break-make in the single-phase-two-wire, phase line normally, though traditional mechanical switch is comparatively cheap, but people will go to the position of switch during operation, and are not too convenient; Along with the continuous development of electronic technology, can be convenient when people wish console switch, so, bring into use the electronic switch of remote control to replace traditional mechanical switch in many occasions.In the prior art, described telecontrol electronic switch is divided into two kinds usually, and a kind of is the two-wire power supply, and its wiring is trouble.Usually traditional mechanical switch place has only a phase line and several lamp lines, when using the remote control switch of two-wire power supply, also will be again again zero line of cloth could work, do not allow as a rule; Another kind need not connect up at described mechanical switch place again, but the remote control switch of present this single line power supply is owing to be subjected to the restriction of prior art, the stand-by power consumption of its control Driver Circuit and wireless receiving circuit itself is bigger, go offline easily during switch, so, its job insecurity more can not use on capacitive loads such as electricity-saving lamp.
The utility model content
The technical problems to be solved in the utility model is, at the deficiency on the prior art, job insecurity, the defective that can not on capacitive loads such as electricity-saving lamp, use, provide a kind of working stability reliably, cold the flashing of not fragile and turning off the light of having solved that capacitive loads such as electricity-saving lamp cause resemble and the digital remote control switch of a kind of phase line control load break-make of Chinese People's Anti-Japanese Military and Political College's rush of current during switch.
The technical scheme that its technical problem that solves the utility model adopts is: the remote control switch of constructing a kind of phase line control load break-make, comprise receiver of remote-control sytem, master controller and be the ac-dc converter circuit of described remote control switch power supply when the load access failure, two dc output ends of described ac-dc converter circuit are connected on the power end and earth terminal of described remote control switch, and described earth terminal is connected on the described phase line input; Be that it provides current path and drives for described remote control switch power supply simultaneously and the circuit of feedback power supply when described remote control switch also comprises described load conducting, described driving and feedback power supply circuits are connected between described phase line input and the phase line output terminal, controlled by the output signal of described master controller, and generation is connected to the power end of described remote control switch and the direct voltage between the earth terminal.
In remote control switch described in the utility model, described driving and feedback power supply circuits comprise first ac input end, first ac output end and drive controlling end, described first ac input end is connected on the described phase line input, described first ac output end is connected on the described phase line output terminal, and described drive controlling end is connected on the output port of described master controller.
In remote control switch described in the utility model, described driving and feedback power supply circuits comprise bidirectional triode thyristor SCR1, photoelectrical coupler U2, voltage-stabiliser tube DW2, rectifier diode D2, transistor Q1 and resistance R 5, described photoelectrical coupler U2 comprises the DC control end, the AC driving end, the first switch control end and second switch control end, the first anode of described bidirectional triode thyristor SCR1 and second plate are connected on described first ac input end and first ac output end, its control utmost point is connected the negative terminal of described voltage-stabiliser tube DW2, the anode of described voltage-stabiliser tube DW2 is connected ac output end and the diode D2 negative terminal of described photoelectrical coupler U2, and the anode of described diode D2 is connected the dc power supply terminal of described remote control switch; The first anode of described bidirectional triode thyristor SCR1 also is connected on the described switch input terminal, and the described first switch control end is connected described power end by described resistance R 5, and the described first switch control end also is connected described transistor
On the collector electrode of Q1, the emitter of described transistor Q1 is connected with described earth terminal, and its base stage is connected with described drive controlling end.
In remote control switch described in the utility model, also be in series with the resistance R 6 that described photoelectrical coupler U2 is shielded between the ac input end of the second plate of described bidirectional triode thyristor SCR1 and described photoelectrical coupler U2.
In remote control switch described in the utility model, described ac-dc converter circuit comprises half-wave rectifying circuit, described half-wave rectifying circuit comprises the resistance R 9 and the rectifier diode D4 of series connection, one end of described resistance R 9 is connected the negative terminal of described diode D4, its other end is connected on the described phase line, and the anode of described diode D4 is connected on the described positive power source terminal.
In remote control switch described in the utility model, the ac input end of described ac-dc converter circuit is connected between the phase line input and phase line output terminal of this remote control switch; Described ac-dc converter circuit comprises at least one ac capacitor, bridge rectifier D6 and DC/DC circuit, described DC/DC circuit comprises input and equipotential end, described ac capacitor one end is connected described phase line output terminal, the other end is connected the ac input end of described bridge rectifier D6, another ac input end of this bridge rectifier D6 is connected described phase line input, the direct current of described bridge rectifier D6 just, negative output terminal is connected respectively to the input and the described equipotential end of described DC/DC circuit, and the output of described DC/DC circuit is connected to the power end of described remote control switch by high-frequency rectification diode D3.
In remote control switch described in the utility model, described DC/DC circuit comprises a transistor Q3, biasing resistor R11, emitter resistance R12, transformer T1, LC series resonance inductance L C1 and rectifier diode D3, and the emitter of described transistor Q3 is connected to described equipotential end by emitter resistance R12; Described LC series resonant circuit LC1 is connected between the base stage and described equipotential end of described transistor Q3; The base stage of described transistor Q3 also is connected to the input of described DC/DC circuit by biasing resistor R11; The collector electrode of described transistor Q3 is connected to the input of described DC/DC circuit by the primary coil of described transformer T1; Described transformer T1 secondary coil one end is connected to described earth terminal; The other end is connected to the positive power source terminal of described remote control switch successively by described high-frequency rectification diode D3.
In remote control switch described in the utility model, this remote control switch comprises a phase line input and two line output terminals mutually, described two phase line output terminals link to each other with described phase line input by different drivings and feedback power supply circuits respectively, described master controller comprises two independently outputs, controls described two break-makes that drive and feed back power supply circuits respectively; Described ac-dc converter circuit has two ac input ends, and two ac input ends are connected on described two phase line output terminals.
In remote control switch described in the utility model, described central control circuit comprises microprocessor.
Implement remote control switch of the present utility model, has following beneficial effect: different circuit unit power supplies is arranged when power supply is divided into the load connection with access failure respectively because the utility model has adopted, and described ac-dc conversion circuit and master controller and receiver of remote-control sytem are because its circuit characteristic has determined that its power consumption is lower, so in the utility model, described remote control switch work is not more stable, and is fragile and solved cold the flashing of turning off the light that capacitive loads such as electricity-saving lamp cause and resemble.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of remote control switch first embodiment of a kind of phase line control load of the utility model break-make;
Fig. 2 is the circuit diagram of remote control switch first embodiment of a kind of phase line control load of the utility model break-make;
Fig. 3 is the circuit diagram of remote control switch second embodiment of a kind of phase line control load of the utility model break-make.
Embodiment
As shown in Figure 1, in the remote control switch embodiment of a kind of phase line control load break-make of the present utility model, remote control switch is made up of phase line input 1, phase line output terminal 2, master controller 4, receiver of remote-control sytem 3, ac-dc converter circuit 5 and driving and feedback power supply circuits 6.Wherein, receiver of remote-control sytem 3 is little power consumption receiver of remote-control sytem.Receiver of remote-control sytem 3 is accepted the remote signal of remote controller (not shown) emission, and the signal that receives is delivered to the input of master controller 4, master controller 4 is microprocessors, the output of this master controller 4 is connected to and drives and feedback power supply circuits 6, controls the wherein break-make of controlled switch; Drive and feed back power supply circuits 6 and be connected between phase line input 1 and the phase line output terminal 2; In described remote control switch, ac-dc converter circuit 5 is connected in parallel between phase line input 1 and the phase line output terminal 2, and its output is connected to the power end 10 and the earth terminal 11 of this remote control switch; When drive and feedback power supply circuits 6 in controlled switch access failure (i.e. not conducting of this remote control switch) time, ac-dc converter circuit 5 provides standby power for described master controller 4 and receiver of remote-control sytem 3; After the controlled switch in described driving and the feedback power supply circuits 6 is connected (at this moment, this remote control switch conducting, its load is started working), the power supply of described receiver of remote-control sytem 3 and described master controller 4 changes by above-mentioned driving and feedback power supply circuits 6 to be supplied with; The power supply conversion of ac-dc converter circuit 5 and driving and feedback power supply circuits 6 is not by other elements control, but determine by circuit characteristic of himself and the voltage drop on controllable silicon.
In Fig. 1, described ac-dc converter circuit 5 further comprises bridge rectifier D6 and DC/DC circuit 52, and described remote control switch only illustrates one tunnel phase line output terminal 2.Obviously, described remote control switch can comprise a plurality of phase line output terminals 2, they draw by same phase line input 1, by different drivings and feedback power supply circuits 6, be connected to different phase line output terminals 2, the control end of different drivings and feedback power supply circuits 6 is connected to the different outputs of master controller 4; When remote control switch comprises multichannel phase line output terminal 2, described ac-dc converter circuit 5 comprises the ac capacitor identical with the way of described phase line output terminal 2, but comprise one or more bridge rectifier D6 and a DC/DC circuit 52, the shared one or more bridge rectifier D6 of described a plurality of ac capacitor, its annexation is for being connected the interchange end of bridge rectifier D6 respectively by ac capacitor separately by a plurality of phase line output terminals 2, another of bridge rectifier D6 exchanges end and all be connected on the described phase line input 1.Ac-dc converter circuit 5 is got back to minimum leakage current between the zero line of AC network and is obtained voltage by load from phase line.
What deserves to be mentioned is, in Fig. 1, also comprised a half-wave rectifying circuit, this circuit is made up of resistance R 9 and diode D4 and the K switch 1 of series connection, one end of described resistance R 9 is connected the positive pole of described diode D4, its other end is connected on the described phase line output terminal 2, and the negative pole of described diode D4 is connected on the described power end 10 by K switch 1.When reality is used, K switch 1 disconnects, in fact this circuit does not work, break down by bridge rectifier D6 and DC/DC circuit 52 or because the consideration on the cost can not use the time when above-mentioned, with K switch 1 closure, also can make the entire circuit operate as normal, certainly, its prerequisite be with load to be resistive load and inductive load.
Fig. 2 is the electrical schematic diagram of the utility model first embodiment, wherein, has only a phase line output terminal 2, as shown in Figure 2, ac capacitor C1 is connected between the ac input end of phase line output terminal 2 and bridge rectifier D6, another ac input end of bridge rectifier D6 is connected on the phase line input 1, the positive and negative output of the direct current of bridge rectifier D6 is connected respectively to the input and the equipotential end of DC/DC circuit 52, and the output of described DC/DC circuit 52 is connected to the power end 10 of described remote control switch.In Fig. 2, described remote control switch has a power end 10 and an earth terminal 11, and certainly, earth terminal 11 is the relative current potential of representative in circuit just, and in fact, above-mentioned earth terminal 11 is connected on the phase line input 1.Master controller 4 and little power consumption receiver of remote-control sytem 3 all are to obtain voltage between above-mentioned power end 10 and earth terminal 11, and be same, and ac-dc conversion circuit 5 and driving also are connected on above-mentioned two end points with the power output end of feedback power supply circuits 6.
In Fig. 2, described driving comprises controllable silicon SCR 1, resistance R 6, photoelectrical coupler U2, resistance R 7, voltage-stabiliser tube DW2, diode D2, transistor Q1 and resistance R 5 with feedback power supply circuits 6, photoelectrical coupler U2 receives the control signal from master controller 4 outputs, make the lumination of light emitting diode among the photoelectrical coupler UU2, thereby make photoelectrical coupler U2 conducting wherein, when center controller 4 was not exported control signal, above-mentioned light-emitting diode was not luminous, and above-mentioned switch is just not conducting also; Photoelectrical coupler U2 comprises input control end, output drive end, the first switch control end and second switch control end; The first anode of controllable silicon SCR 1 and second plate are connected on first ac input end and first ac output end of driving and feedback power supply circuits 6, and the control utmost point of controllable silicon SCR 1 connects the negative terminal of voltage-stabiliser tube DW2; The anode of voltage-stabiliser tube DW2 is connected on the negative terminal of diode D2, and the anode of diode D2 is connected on the power end 10 of described remote control switch; The first anode of controllable silicon SCR 1 also is connected on the input control end of photoelectrical coupler U2 by resistance R 6, the output drive end of described photoelectrical coupler U2 is connected on the negative terminal of described diode D2, the first switch control end of described photoelectrical coupler U2 connects above-mentioned power end 10 by resistance R 5, described light-operated switch U2 second switch control end is connected on the collector electrode of transistor Q1, the emitter of described transistor Q1 is connected with described earth terminal 11, and its base stage is connected with the drive controlling end that drives with feedback power supply circuits 6.When center controller 4 output control signals, photoelectrical coupler U2 conducting voltage of voltage regulation occurs on the described voltage stabilizing didoe DW2 and falls, and makes bidirectional triode thyristor SCR1 conducting, and the load of this remote control switch is connected with phase line by controllable silicon SCR 1, and load gets electric work; Simultaneously, the voltage drop on the described voltage stabilizing didoe is connected to above-mentioned power end 10 through diode D2 rectification, as the supply voltage of whole remote control switch; In said process, described resistance R 6 plays the effect of current limliting and protection, and described photoelectrical coupler U2 is played a protective role.Described piezo-resistance VR1, VR2 can eliminate surge voltage, and described controllable silicon SCR 1 and entire circuit are played a protective role.When center controller 4 was not exported control signal, said process can not take place, and whole remote control switch is by described ac-dc converter circuit 5 power supplies.
Ac-dc converter circuit described in the foregoing description 5 comprises an ac capacitor, bridge rectifier D6 and DC/DC circuit 52, DC/DC circuit 52 comprises input and equipotential end, described ac capacitor one end is connected described phase line output terminal 2, the other end is connected the ac input end of described bridge rectifier D6, another ac input end of this bridge rectifier D6 is connected described phase line input 1, the direct current of described bridge rectifier D6 just, negative output terminal is connected respectively to the input and the described equipotential end of described DC/DC circuit 52, and the output of described DC/DC circuit 52 is connected to the power end 10 of described remote control switch.The annexation of above-mentioned ac capacitor, bridge rectifier D 6 and DC/DC circuit 52 was described preceding, below described DC/DC circuit inside was further described.
In Fig. 2, described DC/DC circuit 52 further comprises a transistor Q3, biasing resistor R11, emitter resistance R12, transformer T1, LC series resonant circuit LC1 and rectifier diode D3, and the emitter of transistor Q3 is connected to the equipotential end of this DC/DC circuit by emitter resistance R12; LC series resonant circuit LC1 is connected between the equipotential end of the base stage of transistor Q3 and this DC/DC circuit; The base stage of transistor Q3 also is connected to the input of DC/DC circuit 52 by biasing resistor R11; The collector electrode of transistor Q3 is connected to the input of this DC/DC circuit 52 by the primary coil of transformer T1; Described transformer T1 secondary coil one end is connected to described earth terminal 11; The other end is connected to the power end 10 of described remote control switch successively by the positive and negative electrode of described rectifier diode D3.When the alternating voltage that will form by the leakage current that load comes at bridge rectifier D6 becomes direct voltage, this direct voltage is added to the input and the equipotential end of above-mentioned DC/DC circuit 52, this circuit is that the center constitutes the starting of oscillation of LC oscillator with transistor Q1, and be coupled to by transformer T1 that it is secondary, by diode D3 rectification, obtain the direct voltage of needs, its process is the process that little electric current, high voltage are converted into low-voltage, big electric current.
Fig. 3 is the second embodiment circuit diagram of the present utility model, in Fig. 3, comprise a phase line input 1 and two line output terminals 2 mutually, correspondingly, also comprise two ac capacitors, two second ac output ends that drive and feed back 6, two drivings of power supply circuits and feedback power supply circuits 6 are connected on two above-mentioned phase line output terminals 2; Two drive and first ac input end of feedback power supply circuits 6 and connect the back and be connected with phase line input 1; Two drive controlling ends that drive and feed back power supply circuits 6 are connected on the different output of master controller 4, and except that some above-mentioned difference, the present embodiment and first embodiment are basic identical, do not repeat them here.
Claims (9)
1. the remote control switch of a phase line control load break-make, comprise receiver of remote-control sytem (3), master controller (4) and be the ac-dc converter circuit (5) of described remote control switch power supply when the load access failure, two outputs of described ac-dc converter circuit (5), be connected on the positive power source terminal (10) and earth terminal (11) of described remote control switch, it is characterized in that described earth terminal (11) is connected on the described phase line input (1); Be that it provides current path and drives for described remote control switch power supply simultaneously and the circuit (6) of feedback power supply when described remote control switch also comprises described load conducting, described driving and feedback power supply circuits (6) are connected between described phase line input (1) and the phase line output terminal (2), be subjected to the output signal control of described master controller (4), and generation is connected to the positive power source terminal (10) of described remote control switch and the direct voltage between the earth terminal (11).
2. remote control switch according to claim 1, it is characterized in that, described driving and feedback power supply circuits (6) comprise first ac input end, first ac output end and drive controlling end, described first ac input end is connected on the described phase line input (1), described first ac output end is connected on the described phase line output terminal (2), and described drive controlling end is connected on the output port of described master controller (4).
3. remote control switch according to claim 2, it is characterized in that, described driving and feedback power supply circuits (6) comprise bidirectional triode thyristor SCR1, photoelectrical coupler U2, voltage-stabiliser tube DW2, rectifier diode D2, transistor Q1 and resistance R 5, described photoelectrical coupler U2 comprises the DC control end, the AC driving end, the first switch control end and second switch control end, the first anode of described bidirectional triode thyristor SCR1 and second plate are connected on described first ac input end and first ac output end, its control utmost point is connected the negative terminal of described voltage-stabiliser tube DW2, the anode of described voltage-stabiliser tube DW2 is connected ac output end and the diode D2 negative terminal of described photoelectrical coupler U2, and the anode of described diode D2 is connected the dc power supply terminal of described remote control switch (10); The first anode of described bidirectional triode thyristor SCR1 also is connected on the described switch input terminal, the described first switch control end is connected described power end (10) by described resistance R 5, the described first switch control end also is connected on the collector electrode of described transistor Q1, the emitter of described transistor Q1 is connected with described earth terminal (11), and its base stage is connected with described drive controlling end.
4. remote control switch according to claim 3 is characterized in that, between the ac input end of the second plate of described controllable silicon SCR 1 and described photoelectrical coupler U2 also the string have couple photoelectrical coupler U2 to shield wire-wound resistor R6.
5. remote control switch according to claim 1, it is characterized in that, described ac-dc converter circuit (5) comprises half-wave rectifying circuit, described half-wave rectifying circuit comprises the resistance R 9 and the rectifier diode D4 of series connection, one end of described resistance R 9 is connected the negative terminal of described diode D4, its other end is connected on the described phase line (2), and the anode of described diode D4 is connected on the described positive power source terminal (10).
6. remote control switch according to claim 2 is characterized in that, the ac input end of described ac-dc converter circuit (5) is connected between the phase line input (1) and phase line output terminal (2) of this remote control switch; Described ac-dc converter circuit (5) comprises at least one ac capacitor, bridge rectifier D6 and DC/DC circuit (52), described DC/DC circuit (52) comprises input and equipotential end, described ac capacitor one end is connected described phase line output terminal (2), the other end is connected the ac input end of described bridge rectifier D6, another ac input end of this bridge rectifier D6 is connected described phase line input (1), the direct current of described bridge rectifier D6 just, negative output terminal is connected respectively to the input and the described equipotential end of described DC/DC circuit (52), and the output of described DC/DC circuit (52) is connected to the power end (10) of described remote control switch by high-frequency rectification diode D3.
7. remote control switch according to claim 6, it is characterized in that, described DC/DC circuit (52) comprises a transistor Q3, biasing resistor R11, emitter resistance R12, transformer T1, LC series resonance inductance L C1 and rectifier diode D3, and the emitter of described transistor Q3 is connected to described equipotential end by emitter resistance R12; Described LC series resonant circuit LC1 is connected between the base stage and described equipotential end of described transistor Q3; The base stage of described transistor Q3 also is connected to the input of described DC/DC circuit (52) by biasing resistor R11; The collector electrode of described transistor Q3 is connected to the input of described DC/DC circuit (52) by the primary coil of described transformer T1; Described transformer T1 secondary coil one end is connected to described earth terminal (11); The other end is connected to the positive power source terminal (10) of described remote control switch successively by described high-frequency rectification diode D3.
8. remote control switch according to claim 1, it is characterized in that, this remote control switch comprises a phase line input (1) and two line output terminals (2) mutually, described two phase line output terminals (2) are imported (1) by different drivings and feedback power supply circuits (6) with described phase line respectively and are linked to each other, described master controller (4) comprises two independently outputs, controls described two break-makes that drive and feed back power supply circuits (6) respectively; Described ac-dc converter circuit (5) has two ac input ends, and two ac input ends are connected on described two phase line output terminals (2).
9. according to any described remote control switch of claim 1-8, it is characterized in that described central control circuit (4) comprises microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200497221U CN201044437Y (en) | 2007-03-23 | 2007-03-23 | Remote control switch controlling make and break of load by single phase wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200497221U CN201044437Y (en) | 2007-03-23 | 2007-03-23 | Remote control switch controlling make and break of load by single phase wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201044437Y true CN201044437Y (en) | 2008-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200497221U Expired - Lifetime CN201044437Y (en) | 2007-03-23 | 2007-03-23 | Remote control switch controlling make and break of load by single phase wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201044437Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635459B (en) * | 2009-08-14 | 2011-08-10 | 深圳和而泰智能控制股份有限公司 | Switch for the access of single phase wire |
-
2007
- 2007-03-23 CN CNU2007200497221U patent/CN201044437Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635459B (en) * | 2009-08-14 | 2011-08-10 | 深圳和而泰智能控制股份有限公司 | Switch for the access of single phase wire |
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Effective date of registration: 20090206 Address after: 407 storey, two storey, Zhenhua Road Industrial Zone, Shenzhen, Guangdong Province, Futian District 518049, China Patentee after: SZSAW ELECTRONIC CO., LTD. Address before: Guangxi water conservancy and Electric Power Technology Institute, No. 104 Jinsha Road, the Guangxi Zhuang Autonomous Region, Nanning 530000, China Patentee before: Chen Yaoben |
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Owner name: SHENZHEN CITY SHENGBIAO ELECTRONICS CO., LTD. Free format text: FORMER OWNER: CHEN CHENBEN Effective date: 20090206 |
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Granted publication date: 20080402 |
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