CN2242532Y

CN2242532Y - Socket with function of automatic disconnection of all garding current of household electric appliance

Info

Publication number: CN2242532Y
Application number: CN 95208734
Authority: CN
Inventors: 黄宏铭; 田卫平
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-21
Filing date: 1995-04-21
Publication date: 1996-12-11
Anticipated expiration: 2005-04-21

Abstract

The utility model relates to a socket with function of automatic disconnection of all garding current of household electric appliance, which relates to the technical field of electronic relays. The utility model is characterized in that a controlling plate composed of a starting circuit, an electronic time-delay circuit, a current amplitude discrimination and synchronizing circuit, a capacitance depressurization rectifier circuit, a relay driving and turning off circuit and an output socket are respectively arranged in an independent insulating shell body; after the utility model recognizes the household electric appliances of various garding currents stop running, the input main power source is automatically closed; after the household electric appliances with garding currents use the socket, the original frequent operations of plugging power source plugs can be avoided, and the utility model is convenient in use.

Description

A kind ofly can automatically shut down the socket that various household electrical appliance are waited for electric current

A kind ofly can automatically shut down the socket that various household electrical appliance are waited for electric current, relate to the electronic relay technical field, especially adopt electronic circuit to determine the electric current of waiting for of various household electrical appliance, then with the device of the shutoff of its input power supply.

At present, the known various household electrical appliance (referring to television set, video tape recorder and stereo set) that distant control function arranged and microwave oven etc. (referring to electronic control mode) are after quitting work, still have and wait for the electric current existence, and the user is often for economize on electricity or other reason, pull up the power plug of these electrical equipment always or manually turn-off the mains switch of setting up separately for input, these operations make troubles for the user when using these type of household electrical appliance.

The purpose of this utility model provide a kind of can differentiate variously the household electrical appliance of waiting for electric current are arranged after it quits work, the socket that its input general supply is automatically shut down.

The purpose of this utility model is achieved in that at one independently in the insulation shell, is equipped with by starting circuit, electronic delay circuit, current amplitude differentiates and the circuit of adjusting, capacitor step-down rectifier circuit, relay drive control board and the accessory power outlet that constitutes with breaking circuit.Its operation principle is such: work as L, the N termination is gone into AC power, power supply is through the normally closed contact ZK1-1 of relay Z, dropping resistor R6, rectifier diode D6 gives delay capacitor C4 precharge, the electric capacity both end voltage is clamped on the stationary value by voltage-stabiliser tube DW1, after starting button T is operated, power supply is through decompression capacitor C1 and D1, D2, D3, the rectification circuit that D4 forms is powered to relay drive circuit, the grid of driving transistors V2 is encouraged by delay capacitor C4 pre-charge pressure in advance, driving transistors V2 conducting, relay Z adhesive, the normally opened contact ZK1-2 of relay Z connects, and power supply powers to the load through socket CH; Current transformer CT samples to load current amplitude size and after potentiometer W adjusts, charge to delay capacitor C4 by isolating diode D7, the former charge circuit of C4 is cut off after relay Z adhesive, this moment, the grid of driving transistors V2 was controlled by instrument transformer CT sampled signal size only, because the electric current of various household electrical appliance when work is bigger, and after quitting work to wait for electric current very little, therefore only need driving transistors V2 cut-in voltage is adjusted between above-mentioned two kinds of electric currents, promptly greater than waiting for electric current, less than operating current, like this when load is operating state, driving transistors V2 conducting always, relay Z adhesive, when load when waiting for operating state, the delay circuit that is made of delay capacitor C4 and discharge resistance R5 is after one section time-delay, the grid potential of driving transistors V2 begins to descend gradually, driving transistors V2 is transferred to by conducting and ending, in order to make driving transistors V2 turn-off more reliably, the control utmost point of thyristor V1 is connected in the drain electrode of driving transistors V2, as driving transistors V2 once leave the saturation region, the pressure drop that its pipe produces just triggers thyristor V1 open-minded, after thyristor V1 opens with the working power short circuit of relay Z, relay Z discharges immediately because of decompression, and load also is cut off because of the disconnection of normally opened contact ZK1-2 simultaneously; In the time will powering to the load again, as long as operate starting button T again, relay Z adhesive again is not if load this moment is in operating state, the delay circuit that delay capacitor C4 and discharge resistance R5 constitute still makes relay Z discharge again after one section time-delay.

Owing to adopt such scheme, the household electrical appliance of waiting for electric current are arranged after quitting work, can remove the input power remove troublesome operation of plug power plug from, for use provides convenience through one section time-delay.

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is an electrical schematic diagram of the present utility model.

Fig. 2 is the electrical schematic diagram that adopts high voltage transistor to drive.

Fig. 3 is the electrical schematic diagram that adopts low voltage transistor to drive.

R1, R2, R3, R4, R5, R6 are resistance among the figure, C1, C2, C3, C4, C5, C6 are electric capacity, D1, D2, D3, D4, D5, D6, D7 are diode, RY. piezo-resistance W. potentiometer DW1, DW2. voltage-stabiliser tube V1. thyristor V2. driving transistors Z, relay CT. current transformer T. button CH, CH0. socket

In Fig. 1, relay Z normally-closed contact ZK1-1, dropping resistor R6 connects with the anode of diode D6, diode cathode connects the end of delay capacitor C4, the delay capacitor C4 other end with by D1, D2, D3, the negative terminal of the rectifier bridge output that D4 forms links to each other, discharge resistance R5, voltage-stabiliser tube DW1, the grid of driving transistors V2 and source electrode are connected in parallel on delay capacitor C4 two ends, D1, D2, D3, D4 forms the anode of rectifier bridge output, resistance R 2, the coil of relay Z, the drain electrode series connection of driving transistors V2, the coils from parallel connection of coils of sustained diode 5 and relay Z, divider resistance R3, be connected in parallel in the drain electrode and source electrode of driving transistors V2 after the R4 series connection, anti-false triggering capacitor C 3 is connected in parallel on resistance R 4 two ends with the control utmost point and the negative electrode of thyristor V1, the anode of thyristor V1 continues and flows the negative electrode of diode D5, filter capacitor C2 and by D1, D2, D3, D4 forms on the positive and negative terminal of rectifier bridge output, D1, D2, D3, ac input end one end that D4 forms rectifier bridge falls piezoelectricity appearance C1, on another termination power N, on another relay termination Z contact ZK1-2 of decompression capacitor C1, discharge resistance R1 is in parallel with decompression capacitor C1, piezo-resistance RY and at D1, D2, D3, D4 forms on the ac input end of rectifier bridge; One of the end of button T and socket CH terminates on the contact ZK1-2 of relay Z, and the moving contact ZK1 of the other end of button T and relay Z, power supply L end links, another termination power of socket CH N end; Current transformer CT string is in the current circuit of socket CH, the inferior utmost point of current transformer CT and capacitor C 5, potentiometer W are in parallel, potentiometer slider connects the anode of diode D7, and the negative electrode of D7 connects the grid of driving transistors V2, and one of potentiometer W fixedly on the termination driving transistors V2 source electrode.

In Fig. 2, relay Z normally-closed contact ZK1-1, dropping resistor R6 connects with the anode of diode D6, diode D6 negative electrode connects the end of delay capacitor C4, the delay capacitor C4 other end with by D1, D2, D3, the negative terminal of the rectifier bridge output that D4 forms links to each other, discharge resistance R5, voltage-stabiliser tube DW1, the grid of driving transistors V2 and source electrode are connected in parallel on delay capacitor C4 two ends, D1, D2, D3, D4 forms the anode of rectifier bridge output, the coil of relay Z, the drain electrode series connection of driving transistors V2, sustained diode 5, the coils from parallel connection of coils of anti-shake capacitor C 6 and relay Z, D1, D2, D3, D4 forms on the ac input end one relay termination Z contact ZK1-2 of rectifier bridge, on another termination power N, piezo-resistance and at D1, D2, D3, D4 forms on the ac input end of rectifier bridge; One of the end of button T and socket CH terminates on the contact ZK1-2 of relay Z, and the moving contact ZK1 of the other end of button T and relay Z, power supply L end links, another termination power of socket CH N end; Current transformer CT string is in the current circuit of socket CH, the inferior utmost point of current transformer CT and capacitor C 5, potentiometer W are in parallel, potentiometer slider connects the anode of diode D7, and the negative electrode of D7 connects the grid of driving transistors V2, and one of potentiometer W fixedly on the termination driving transistors V2 source electrode.Among this embodiment, driving transistors V2 adopts high tension apparatus, and circuit is simplified.

In Fig. 3, relay Z normally-closed contact ZK1-1, dropping resistor R6 connects with the anode of diode D6, diode D6 negative electrode connects the end of delay capacitor C4, the delay capacitor C4 other end with by D1, D2, D3, the negative terminal of the rectifier bridge output that D4 forms links to each other, discharge resistance R5, voltage-stabiliser tube DW1, the grid of driving transistors V2 and source electrode are connected in parallel on delay capacitor C4 two ends, D1, D2, D3, D4 forms the anode of rectifier bridge output, resistance R 2, the coil of relay Z, the drain electrode series connection of driving transistors V2, sustained diode 5, the coils from parallel connection of coils of anti-shake capacitor C 6 and relay Z, filter capacitor C2 and by D1, D2, D3, D4 forms on the positive and negative terminal of rectifier bridge output, the negative electrode of voltage-stabiliser tube DW2 and resistance R 2, the coil of relay Z links to each other, and the anode of voltage-stabiliser tube DW2 connects the source electrode of driving transistors V2; Ac input end one end that D1, D2, D3, D4 form rectifier bridge falls piezoelectricity appearance C1, on another termination power N, on another relay termination Z contact ZK1-2 of decompression capacitor C1, discharge resistance R1 is in parallel with decompression capacitor C1, and piezo-resistance RY also forms at D1, D2, D3, D4 on the ac input end of rectifier bridge; One of the end of button T and socket CH terminates on the contact ZK1-2 of relay Z, the moving contact ZK1 of the other end of button T and relay Z, power supply L end links, another termination power of socket CH N end, the contact ZK2-2 of the relay termination Z of another socket CH0, another termination power N end of socket CH0, the moving contact ZK2 of relay Z connects power supply L end; Current transformer CT string is in the current circuit of socket CH, the inferior utmost point of current transformer CT and capacitor C 5, potentiometer W are in parallel, potentiometer slider connects the anode of diode D7, and the negative electrode of D7 connects the grid of driving transistors V2, and one of potentiometer W fixedly on the termination driving transistors V2 source electrode.Among this embodiment, socket CH0 current circuit is without current transformer CT, the electrical equipment that socket CH0 is connect is in the state of the electrical equipment control that is connect by socket CH, for example connect television set connecing on the socket CH on video tape recorder, the socket CH0, as long as control the operation of opening and closing of video tape recorder, television set is also along with Kai Heguan later on; When starting button T is the self-locking button, the video tape recorder that is connect on the socket CH is in always is subjected to electricity condition, after connecting like this, the video tape recorder that is connect on the socket CH can repeat out and close the television set that is connected on the socket CH0, after having only starting button T to withdraw from self-locking state, the television set that is connect on video tape recorder that is connect on the socket CH and the socket CH0 turn-offs under the video tape recorder control that is connect on the socket CH together.Voltage-stabiliser tube DW2 can replace with piezo-resistance among the figure.

Claims

1. one kind can automatically shut down the socket that various household electrical appliance are waited for electric current, at one independently in the insulation shell, be equipped with by starting circuit, electronic delay circuit, current amplitude is differentiated and the circuit of adjusting, capacitor step-down rectifier circuit, relay drives control board and the accessory power outlet that constitutes with breaking circuit, it is characterized in that: relay Z normally-closed contact ZK1-1, dropping resistor R6 connects with the anode of diode D6, diode D6 negative electrode connects the end of delay capacitor C4, the delay capacitor C4 other end with by D1, D2, D3, the negative terminal of the rectifier bridge output that D4 forms links to each other, discharge resistance R5, voltage-stabiliser tube DW1, the grid of driving transistors V2 and source electrode are connected in parallel on delay capacitor C4 two ends, D1, D2, D3, D4 forms the anode of rectifier bridge output, resistance R 2, the coil of relay Z, the drain electrode series connection of driving transistors V2, the coils from parallel connection of coils of sustained diode 5 and relay Z, divider resistance R3, be connected in parallel in the drain electrode and source electrode of driving transistors V2 after the R4 series connection, anti-false triggering capacitor C 3 is connected in parallel on resistance R 4 two ends with the control utmost point and the negative electrode of thyristor V1, the anode of thyristor V1 continues and flows the negative electrode of diode D5, filter capacitor C2 and on the positive and negative terminal of rectifier bridge output, D1, D2, D3, ac input end one end that D4 forms rectifier bridge falls piezoelectricity appearance C1, on another termination power N, on another relay termination Z contact ZK1-2 of decompression capacitor C1, discharge resistance R1 is in parallel with decompression capacitor C1, piezo-resistance RY and at D1, D2, D3, D4 forms on the ac input end of rectifier bridge; One of the end of button T and socket CH terminates on the contact ZK1-2 of relay Z, and the moving contact ZK1 of the other end of button T and relay Z, power supply L end links, another termination power of socket CH N end; Current transformer CT string is in the current circuit of socket CH, the inferior utmost point of current transformer CT and capacitor C 5, potentiometer W are in parallel, potentiometer slider connects the anode of diode D7, and the negative electrode of D7 connects the grid of driving transistors V2, and one of potentiometer W fixedly on the termination driving transistors V2 source electrode.

2. device according to claim 1, it is characterized in that: relay Z normally-closed contact ZK1-1, dropping resistor R6 connects with the anode of diode D6, diode D6 negative electrode connects the end of delay capacitor C4, the delay capacitor C4 other end with by D1, D2, D3, the negative terminal of the rectifier bridge output that D4 forms links to each other, discharge resistance R5, voltage-stabiliser tube DW1, the grid of driving transistors V2 and source electrode are connected in parallel on delay capacitor C4 two ends, D1, D2, D3, D4 forms the anode of rectifier bridge output, the coil of relay Z, the drain electrode series connection of driving transistors V2, sustained diode 5, the coils from parallel connection of coils of anti-shake capacitor C 6 and relay Z, D1, D2, D3, D4 forms on the ac input end one relay termination Z contact ZK1-2 of rectifier bridge, on another termination power N, piezo-resistance and at D1, D2, D3, D4 forms on the ac input end of rectifier bridge; One of the end of button T and socket CH terminates on the contact ZK1-2 of relay Z, and the moving contact ZK1 of the other end of button T and relay Z, power supply L end links, another termination power of socket CH N end; Current transformer CT string is in the current circuit of socket CH, the inferior utmost point of current transformer CT and capacitor C 5, potentiometer W are in parallel, potentiometer slider connects the anode of diode D7, and the negative electrode of D7 connects the grid of driving transistors V2, and one of potentiometer W fixedly on the termination driving transistors V2 source electrode.

3. device according to claim 1, it is characterized in that: relay Z normally-closed contact ZK1-1, dropping resistor R6 connects with the anode of diode D6, diode D6 negative electrode connects the end of delay capacitor C4, the delay capacitor C4 other end with by D1, D2, D3, the negative terminal of the rectifier bridge output that D4 forms links to each other, discharge resistance R5, voltage-stabiliser tube DW1, the grid of driving transistors V2 and source electrode are connected in parallel on delay capacitor C4 two ends, D1, D2, D3, D4 forms the anode of rectifier bridge output, resistance R 2, the coil of relay Z, the drain electrode series connection of driving transistors V2, sustained diode 5, the coils from parallel connection of coils of anti-shake capacitor C 6 and relay Z, filter capacitor C2 and on the positive and negative terminal of rectifier bridge output, the negative electrode of voltage-stabiliser tube DW2 and resistance R 2, the coil of relay Z links to each other, and the anode of voltage-stabiliser tube DW2 connects on the source electrode of driving transistors V2; Ac input end one end that D1, D2, D3, D4 form rectifier bridge falls piezoelectricity appearance C1, on another termination power N, on another relay termination Z contact ZK1-2 of decompression capacitor C1, discharge resistance R1 is in parallel with decompression capacitor C1, and piezo-resistance RY also forms at D1, D2, D3, D4 on the ac input end of rectifier bridge; One of the end of button T and socket CH terminates on the contact ZK1-2 of relay Z, the moving contact ZK1 of the other end of button T and relay Z, power supply L end links, another termination power of socket CH N end, the contact ZK2-2 of the relay termination Z of another socket CH0, on another termination power N of socket CH0, the moving contact ZK2 of relay Z connects power supply L end; Current transformer CT string is in the current circuit of socket CH, the inferior utmost point of current transformer CT and capacitor C 5, potentiometer W are in parallel, potentiometer slider connects the anode of diode D7, and the negative electrode of D7 connects the grid of driving transistors V2, and one of potentiometer W fixedly on the termination driving transistors V2 source electrode.

4. device according to claim 1 is characterized in that the pre-charge circuit that is made of relay Z normally-closed contact ZK1-1, resistance R 6, diode D6 and delay capacitor C4.

5. device according to claim 1 is characterized in that the relay Z delay releasing circuit that is made of delay capacitor C4 and discharge resistance R5 and driving transistors V2.

6. device according to claim 1 is characterized in that starting button T can be the self-locking button.

7. device according to claim 1 is characterized in that the obstructed overcurrent instrument transformer of socket CH0 current circuit CT.

8. device according to claim 1 is characterized in that voltage-stabiliser tube DW2 can be a piezo-resistance.