CN207504555U - A kind of dual input circuit for electric leakage protector - Google Patents
A kind of dual input circuit for electric leakage protector Download PDFInfo
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- CN207504555U CN207504555U CN201720871582.XU CN201720871582U CN207504555U CN 207504555 U CN207504555 U CN 207504555U CN 201720871582 U CN201720871582 U CN 201720871582U CN 207504555 U CN207504555 U CN 207504555U
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Abstract
The utility model discloses a kind of dual input circuit for electric leakage protector; it is related to electrical safety field; including power supply stabilization circuit, voltage reference circuit, the first amplifying circuit, the second amplifying circuit and control output circuit, power supply stabilization circuit is voltage reference circuit, the first amplifying circuit, the second amplifying circuit and control output circuit are powered；Voltage reference circuit provides reference voltage for the first amplifying circuit and the second amplifying circuit；The output terminal of first amplifying circuit and the second amplifying circuit is connected to control output circuit; first amplifying circuit and the second amplifying circuit is mutual indepedent and function is identical; compared with prior art; even if the utility model has latch circuit output failure all the way; another way remains to the advantageous effect of normal work, further improves the reliability of circuit for electric leakage protector.
Description
Technical field
The utility model is related to electrical safety field more particularly to a kind of dual input circuit for electric leakage protector.
Background technology
With the improvement of living standards, the electric appliance in people family is also more and more, the safety of household electricity is increasingly closed
, there is miscellaneous earth leakage protective device, since power utilization environment is more and more severe, current ground wire abnormal protection is therewith in note
Conventional demand for control cannot be met, therefore earth leakage protective device needs intelligent direction to develop, ground wire abnormal protection needs to extend inspection
Survey and intelligent recognition can realize that omnibearing stereo is protected.
A kind of electric leakage monitoring chip of earth leakage protective device as disclosed in Chinese utility model patent CN102723695B, packet
Power supply stabilization circuit, reference voltage generator and latch circuit output are included, wherein power supply stabilization circuit is reference voltage generator
And latch circuit output provides operating voltage；Feature is to further include circuit structure and identical the first amplifying circuit and second of performance
Amplifying circuit, an input terminal on the first difference electric discharge road are electrically connected with an input terminal on the second difference electric discharge road, and the end is as public defeated
Enter to terminate external circuit；Another input termination external circuit on the first difference electric discharge road, another input termination dispatch from foreign news agency on the second difference electric discharge road
Road, the output terminal of the first amplifying circuit and the output terminal of the second amplifying circuit are electrically connected respectively with the input terminal of latch circuit output
It connects；Reference voltage generator circuit is respectively the input terminal offer reference voltage on the first difference electric discharge road and the second difference electric discharge road, should
Although utility model is dual input detection, but will cause another way when the amplifier output of amplifying circuit all the way damage therein
Amplifying circuit can not work normally or when the output terminal damage that amplifying circuit merges, earth leakage protective device will fail.
And common PE turn-off current type earth leakage protective devices have the problem of Frequent trip on the market.
Utility model content
First, technical problems to be solved
How the reliability of circuit for electric leakage protector is further improved.
2nd, technical solution
To solve the above-mentioned problems, a kind of dual input circuit for electric leakage protector is provided, including power supply stabilization circuit, voltage
Reference circuit, the first amplifying circuit, the second amplifying circuit and control output circuit, power supply stabilization circuit for voltage reference circuit,
First amplifying circuit, the second amplifying circuit and control output circuit power supply；Voltage reference circuit is the first amplifying circuit and second
Amplifying circuit provides reference voltage；The output terminal of first amplifying circuit and the second amplifying circuit is connected to control output circuit, the
One amplifying circuit and the second amplifying circuit is mutual indepedent and function is identical.
Wherein power supply stabilization circuit includes：First resistor, second resistance, the first zener diode, the second zener diode,
Third zener diode, the 4th zener diode, the first diode, the second diode, third diode, the 4th diode and
One triode, first resistor, second resistance, the first zener diode, the second zener diode, third zener diode, the 4th
Zener diode, the first diode, the second diode, third diode, the 4th diode and the first triode, first resistor two
End is ined succession the base stage and collector of the first triode respectively, and one end of second resistance is ined succession the collector of the first triode, and first
Zener diode, the second zener diode and third zener diode are connected on second resistance in a manner that positive and negative anodes are sequentially connected
Between ground wire, the second resistance wherein cathode of the first zener diode is ined succession, the anode of third zener diode is ined succession ground wire,
The cathode of 4th zener diode is ined succession the base stage of the first triode, the first diode, the second diode, third diode and
Four diodes are connected in a manner that positive and negative anodes are sequentially connected between the 4th zener diode and ground wire, wherein the first diode
Anode is ined succession the anode of the 4th zener diode, and the cathode of the 4th diode is ined succession ground wire.
Wherein voltage reference circuit includes：Reference voltage generator and the 5th zener diode, reference voltage generator
Power input is ined succession the emitter of the first triode, and the ground terminal of reference voltage generator is ined succession ground wire, two pole of the 5th voltage stabilizing
The cathode of pipe is ined succession the output terminal of reference voltage generator, and the anode of the 5th zener diode is ined succession ground wire.
Wherein the first amplifying circuit includes：5th diode, the 6th diode, the first operational amplifier and first integral
Device, the cathode of the 5th diode are ined succession the anode of the 6th diode, and the anode of the 5th diode is ined succession the cathode of the 6th diode,
2 feet of the first operational amplifier, that is, reverse input end is ined succession the cathode of port CH1 and the 6th diode；First operational amplifier
3 feet, that is, in-phase input end is ined succession the output terminal of the anode of the 6th diode, port VF and reference voltage generator；First operation is put
6 feet, that is, output terminal of big device is ined succession the input terminal of first integrator；7 feet of the first operational amplifier, that is, ground terminal is ined succession ground wire；
4 feet of the first operational amplifier, that is, power input is ined succession the emitter of the first triode, and the output terminal of first integrator is ined succession
The base stage of 4th triode and port T1；The power input of first integrator is ined succession the emitter of the first triode；First product
The ground terminal of point device is ined succession ground wire.
Wherein the first amplifying circuit includes：7th diode, the 8th diode, second operational amplifier and second integral
Device, the cathode of the 8th diode are ined succession the anode of the 7th diode, and the anode of the 8th diode is ined succession the cathode of the 7th diode,
2 feet of second operational amplifier, that is, reverse input end is ined succession the cathode of port CH2 and the 7th diode；Second operational amplifier
3 feet, that is, in-phase input end is ined succession the output terminal of the anode of the 7th diode, port VF and reference voltage generator；Second operation is put
6 feet, that is, output terminal of big device is ined succession the input terminal of second integral device；7 feet of second operational amplifier, that is, ground terminal is ined succession ground wire；
4 feet of second operational amplifier, that is, power input is ined succession the emitter of the first triode, and the output terminal of second integral device is ined succession
The base stage of second triode and port T2；The power input of second integral device is ined succession the emitter of the first triode；Second product
The ground terminal of point device is ined succession ground wire.
Wherein control output circuit includes the first latch circuit output and the second latch circuit output.
Wherein the anode of the emitter of the 4th triode Q4 and the tenth diode D10 connect, the current collection of the 4th triode Q4
Pole is connected with 1 foot, that is, input terminal of the first latch, and the cathode of the tenth diode D10 is ined succession ground wire, and 3 feet of the first latch are
Output terminal is ined succession the collector of the 5th triode Q5 and port OUT；2 feet of the first latch, that is, power input ins succession the one or three
The emitter of pole pipe Q11；5 feet of the first latch, that is, ground terminal is ined succession ground wire, and the base stage of the 5th triode Q5 is ined succession the first lock
4 feet of storage；The emitter of 5th triode Q5 is ined succession ground wire.
Wherein the anode of the emitter of the second triode Q22 and the 9th diode D9 connect, the current collection of the 9th triode Q9
Pole is connected with 1 foot, that is, input terminal of the second latch, and the cathode of the 9th diode D9 is ined succession ground wire, and 3 feet of the second latch are
Output terminal is ined succession the collector of third transistor Q3 and port OUT；2 feet of the second latch, that is, power input ins succession first
The emitter of triode Q11；5 feet of the second latch, that is, ground terminal is ined succession ground wire, and the base stage of third transistor Q3 ins succession second
4 feet of latch；The emitter of third transistor Q3 is ined succession ground wire.
Its middle port T1 and the external timing capacitors of port T2.
Its middle port T1 or port T2 ins succession Function Extension circuit.
3rd, the beneficial effects of the utility model
Compared with prior art, even if the utility model has latch circuit output failure all the way, another way remains to normal work
The advantageous effect of work further improves the reliability of circuit for electric leakage protector.
Description of the drawings
Fig. 1 is the circuit block diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model；
Fig. 3 is the basic function circuit diagram of the utility model；
Fig. 4 is the complete functional circuit schematic diagram of the utility model；
Fig. 5 is the circuit block diagram of the implementation 2 of the utility model；
Fig. 6 is the complete functional circuit schematic diagram of the embodiment 2 of the utility model；
Fig. 7 is the circuit block diagram of the embodiment 3 of the utility model.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment cannot be used for limiting the scope of the utility model for illustrating the utility model.
Embodiment 1:
As shown in Figure 1, including power supply stabilization circuit, voltage reference circuit, the first amplifying circuit, the second amplifying circuit and control
Output circuit processed, power supply stabilization circuit are voltage reference circuit, the first amplifying circuit, the second amplifying circuit and control output circuit
Power supply；Voltage reference circuit provides reference voltage for the first amplifying circuit and the second amplifying circuit；First amplifying circuit and second
The output terminal of amplifying circuit is connected to control output circuit, and two latch, a lock are included wherein inside control output circuit
The input terminal of storage is ined succession the first amplifying circuit；Another latch is ined succession the second amplifying circuit, the first amplifying circuit and second
Amplifying circuit is mutual indepedent and function is identical.
The base stage and collector of the first triode Q11 as shown in Fig. 2, first resistor R1 both ends are ined succession respectively, second resistance
One end of R22 is ined succession the collector of the first triode Q11, the first zener diode ZD1, the second zener diode ZD2 and third
Zener diode ZD3 is connected in a manner that positive and negative anodes are sequentially connected between second resistance R22 and ground wire, wherein the first voltage stabilizing two
The cathode of pole pipe ZD1 is ined succession second resistance R22, and the anode of third zener diode ZD3 is ined succession ground wire, the 4th zener diode
The cathode of ZD4 is ined succession the base stage of the first triode Q11, the first diode D11, the second diode D22, third diode D3 and
Four diode D4 are connected in a manner that positive and negative anodes are sequentially connected between the 4th zener diode ZD4 and ground wire, wherein the one or two
The anode of pole pipe D11 is ined succession the anode of the 4th zener diode ZD4, and the cathode of the 4th diode D4 is ined succession ground wire.
The power input of reference voltage generator is ined succession the emitter of the first triode Q11, reference voltage generator
Ground terminal is ined succession ground wire, and the cathode of the 5th zener diode ZD5 is ined succession the output terminal of reference voltage generator, two pole of the 5th voltage stabilizing
The anode of pipe ZD5 is ined succession ground wire.
The cathode of 5th diode D5 is ined succession the anode of the 6th diode D6, and the anode of the 5th diode D5 ins succession the 6th
The cathode of diode D6,2 feet, that is, reverse input end of the first operational amplifier IC1 in succession port CH1's and the 6th diode D6
Cathode；3 feet, that is, in-phase input end of first operational amplifier (IC1) is ined succession anode, port VF and the reference of the 6th diode D6
The output terminal of voltage generator；6 feet, that is, output terminal of first operational amplifier IC1 is ined succession the input terminal of first integrator；First
7 feet of operational amplifier IC1, that is, ground terminal is ined succession ground wire；4 feet, that is, power input of first operational amplifier IC1 ins succession first
The emitter of triode Q11, the output terminal of first integrator are ined succession the base stage of the 4th triode Q4 and port T1；First integral
The power input of device is ined succession the emitter of the first triode Q11；The ground terminal of first integrator is ined succession ground wire.
The cathode of 8th diode D8 is ined succession the anode of the 7th diode D7, and the anode of the 8th diode D8 ins succession the seven or two
The cathode of pole pipe D7,2 feet, that is, reverse input end of second operational amplifier IC2 are ined succession the negative of port CH2 and the 7th diode D7
Pole；3 feet, that is, in-phase input end of second operational amplifier (IC2) is ined succession the anode of the 7th diode D7, port VF and with reference to electricity
Press the output terminal of generator；6 feet of second operational amplifier IC2, that is, output terminal is ined succession the input terminal of second integral device；Second fortune
7 feet, that is, the ground terminal for calculating amplifier IC2 is ined succession ground wire；4 feet of second operational amplifier IC1, that is, power input ins succession the one or three
The emitter of pole pipe Q11, the output terminal of second integral device are ined succession the base stage of the second triode Q22 and port T2；Second integral
The power input of device is ined succession the emitter of the first triode Q11；The ground terminal of second integral device is ined succession ground wire.
The connection of the anode of the emitter of 4th triode Q4 and the tenth diode D10, the collector of the 4th triode Q4 and
1 foot of the first latch, that is, input terminal is connected, and the cathode of the tenth diode D10 is ined succession ground wire, 3 feet of the first latch, that is, defeated
Outlet is ined succession the collector of the 5th triode Q5 and port OUT；2 feet of the first latch, that is, power input ins succession the one or three
The emitter of pole pipe Q11；5 feet of the first latch, that is, ground terminal is ined succession ground wire, and the base stage of the 5th triode Q5 is ined succession the first lock
4 feet of storage；The emitter of 5th triode Q5 is ined succession ground wire.
The connection of the anode of the emitter of second triode Q22 and the 9th diode D9, the collector of the 9th triode Q9 and
1 foot of the second latch, that is, input terminal is connected, and the cathode of the 9th diode D9 is ined succession ground wire, and 3 feet of the second latch export
In succession the collector of third transistor Q3 and port OUT at end；2 feet of the second latch, that is, power input is ined succession the one or three pole
The emitter of pipe Q11；5 feet of the second latch, that is, ground terminal is ined succession ground wire, and the base stage of third transistor Q3 is ined succession the second latch
4 feet of device；The emitter of third transistor Q3 is ined succession ground wire.
As shown in figure 3, the circuit is the basic function circuit diagram of the utility model, the external timing capacitors 1 of port T1,
The external timing capacitors 2 of port T2, controllable silicon SCR control buckle releaser S1-S2, the installation of ground wire exception indicating circuit and zero curve and ground wire
Between, zero sequence current mutual inductor ZCT1 is used to detect the electric leakage of zero curve and firewire；Ground wire mutual inductor ZCT2 leaks for detecting ground wire
Electricity.
As shown in figure 4, the circuit is the complete functional circuit schematic diagram of the utility model, power indicating circuit plays finger
Show the effect of circuit working state, prevent accidentally tactile generation.
When zero sequence current mutual inductor ZCT1 detects that zero curve or firewire have electric leakage, induced voltage inputs first and puts respectively
The big VF ports of circuit and CH1 ports, when leakage current intensity reaches preset value, port T1 gives capacitance C4 in a manner of constant current
Charging, when capacitance voltage reaches preset value, the first latch overturning in the first latch circuit output is latched, and the output of OUT feet is high
Level, through diode D2 triggering controllable silicon SCR conductings, tripping coil L is powered so that S1-S2 is disconnected, and is leaked electricity so as to fulfill zero sequence
The function of protection.
When ground line current mutual inductor ZCT2 detects that ground wire has electric leakage, induced voltage inputs the second amplification electric current respectively
VF ports and CH2 ports, when leakage current intensity reaches preset value, port T2 is charged in a manner of constant current to capacitance C5, electricity
When appearance voltage reaches preset value, the second latch overturning in the second latch circuit output is latched, OUT feet output high level, warp
Diode D2 triggering controllable silicon SCR conductings, tripping coil L are powered so that S1-S2 is disconnected, earth leakage protective so as to fulfill ground wire
Function.
When attaching plug is because loose contact is when overheating problem occur in other reasons, the thermistor in Overtemperature protection circuit
RT resistance values become smaller so that triode Q1 is connected, so that controllable silicon SCR is connected, tripping coil L is powered so that S1-S2 breaks
It opens, realizes the function of overtemperature prote.
Embodiment 2:
As shown in figure 5, the structure and embodiment 1 of the present embodiment are essentially identical, difference is：In the first amplifying circuit or
The external timing capacitor of the T1 of two amplification circuit output ends, T2 (such as C5) both ends simultaneously meet triode Q2, and triode Q2 is controlled by other
Function Extension uses circuit,
As shown in fig. 6, the circuit is the complete functional circuit schematic diagram of implementation 2, triode Q2 receiving comes from function expansion
The signal of circuit is used in exhibition, when extending signal output high level, triode Q2 saturation conductions, and the external timing capacitors of port T2
Voltage be reduced to 0V due to the saturation conduction of triode Q2, therefore, though ground wire mutual inductor ZCT2 detect ground wire electric leakage electricity
When flowing size and exceeding preset value, OUT terminal mouth also Non voltage output；Under the premise of effective grounding, the controlled conductings of triode Q2,
It is made to be automatically closed under the premise of effective grounding, when solving currently on the market because of effective grounding, the electric leakage of PE turn-off currents type
Protector is because of the Frequent trip caused by receptacle grounds voltage and wall form circuit the problem of.
Embodiment 3：
As shown in fig. 7, the structure and embodiment 1 of the present embodiment are essentially identical, difference is：First amplifying circuit and second
The circuit of the input reference voltage of amplifying circuit is separated, and other structures are identical, and the function of realization is also identical.
Embodiment of above is merely to illustrate the utility model, and is not limitation of the utility model, related technology neck
The those of ordinary skill in domain, in the case where not departing from the spirit and scope of the utility model, can also make a variety of changes and
Modification, therefore all equivalent technical solutions also belong to the scope of the utility model.
Claims (9)
1. a kind of dual input circuit for electric leakage protector, including power supply stabilization circuit, voltage reference circuit, the first amplifying circuit,
Two amplifying circuits and control output circuit, it is characterised in that：The power supply stabilization circuit is the voltage reference circuit, described the
One amplifying circuit, second amplifying circuit and control output circuit power supply；Voltage reference circuit is the first amplifying circuit
Reference voltage is provided with the second amplifying circuit；The output terminal of first amplifying circuit and the second amplifying circuit is connected to control output electricity
Road, the first amplifying circuit and the second amplifying circuit is mutual indepedent and function is identical, the control output circuit include first and latch
Output circuit and the second latch circuit output, first latch circuit output are electrically connected with the first amplifying circuit, and described second
Latch circuit output is electrically connected with the second amplifying circuit.
2. a kind of dual input circuit for electric leakage protector as described in claim 1, it is characterised in that：The power supply stabilization circuit packet
It includes：First resistor (R11), second resistance (R22), the first zener diode (ZD1), the second zener diode (ZD2), third are steady
Press diode (ZD3), the 4th zener diode (ZD4), the first diode (D11), the second diode (D22), third diode
(D3), the 4th diode (D4) and the first triode (Q11), first resistor (R11) both ends are ined succession the first triode (Q11) respectively
Base stage and collector, one end of second resistance (R22) in succession the collector of the first triode (Q11), the first zener diode
(ZD1), the second zener diode (ZD2) and third zener diode (ZD3) are connected in a manner that positive and negative anodes are sequentially connected
Two resistance (R22) are between ground wire, the second resistance (R22) wherein the cathode of the first zener diode (ZD1) is ined succession, third voltage stabilizing
The anode of diode (ZD3) is ined succession ground wire, and the cathode of the 4th zener diode (ZD4) is ined succession the base stage of the first triode (Q11),
First diode (D11), the second diode (D22), third diode (D3) and the 4th diode (D4) are with positive and negative anodes successively phase
Mode even is connected on the 4th zener diode (ZD4) between ground wire, wherein the anode of the first diode (D11) ins succession the 4th
The anode of zener diode (ZD4), the cathode of the 4th diode (D4) are ined succession ground wire.
3. a kind of dual input circuit for electric leakage protector as described in claim 1, it is characterised in that：The voltage reference circuit packet
It includes：Reference voltage generator and the 5th zener diode (ZD5), the power input of reference voltage generator are ined succession the one or three pole
Manage the emitter of (Q11), the ground terminal of reference voltage generator is ined succession ground wire, and the cathode of the 5th zener diode (ZD5) is ined succession
The output terminal of reference voltage generator, the anode of the 5th zener diode (ZD5) are ined succession ground wire.
4. a kind of dual input circuit for electric leakage protector as described in claim 1, it is characterised in that：The first amplifying circuit packet
It includes：5th diode (D5), the 6th diode (D6), the first operational amplifier (IC1) and first integrator, the 5th diode
(D5) cathode is ined succession the anode of the 6th diode (D6), and the anode of the 5th diode (D5) is ined succession the negative of the 6th diode (D6)
Pole, 2 feet, that is, reverse input end of the first operational amplifier (IC1) are ined succession the cathode of port CH1 and the 6th diode (D6)；First
The in succession anode of the 6th diode (D6), port VF and reference voltage of 3 feet, that is, in-phase input end of operational amplifier (IC1) occurs
The output terminal of device；6 feet, that is, output terminal of first operational amplifier (IC1) is ined succession the input terminal of first integrator；First operation is put
7 feet, that is, ground terminal of big device (IC1) is ined succession ground wire；4 feet, that is, power input of first operational amplifier (IC1) ins succession the one or three
The emitter of pole pipe (Q11), the output terminal of first integrator are ined succession the base stage and port T1 of the 4th triode (Q4)；First integral
The power input of device is ined succession the emitter of the first triode (Q11)；The ground terminal of first integrator is ined succession ground wire.
5. a kind of dual input circuit for electric leakage protector as claimed in claim 4, it is characterised in that：The first amplifying circuit packet
It includes：7th diode (D7), the 8th diode (D8), second operational amplifier (IC2) and second integral device, the 8th diode
(D8) cathode is ined succession the anode of the 7th diode (D7), and the anode of the 8th diode (D8) is ined succession the negative of the 7th diode (D7)
Pole, 2 feet, that is, reverse input end of second operational amplifier (IC2) are ined succession the cathode of port CH2 and the 7th diode (D7)；Second
The in succession anode of the 7th diode (D7), port VF and reference voltage of 3 feet, that is, in-phase input end of operational amplifier (IC2) occurs
The output terminal of device；6 feet, that is, output terminal of second operational amplifier (IC2) is ined succession the input terminal of second integral device；Second operation is put
7 feet, that is, ground terminal of big device (IC2) is ined succession ground wire；4 feet, that is, power input of second operational amplifier (IC1) ins succession the one or three
The emitter of pole pipe (Q11), the output terminal of second integral device are ined succession the base stage of the second triode (Q22) and port T2；Second product
The power input of point device is ined succession the emitter of the first triode (Q11)；The ground terminal of second integral device is ined succession ground wire.
6. a kind of dual input circuit for electric leakage protector as described in claim 1, it is characterised in that：The first latch cicuit packet
It includes：4th triode (Q4), the tenth diode (D10), the first latch and the 5th triode (Q5), the 4th triode (Q4)
The connection of the anode of emitter and the tenth diode (D10), the collector of the 4th triode (Q4) and 1 foot of the first latch, that is, defeated
Enter end to be connected, the cathode of the tenth diode (D10) is ined succession ground wire, and 3 feet, that is, output terminal of the first latch is ined succession the 5th triode
(Q5) collector and port OUT；2 feet of the first latch, that is, power input is ined succession the emitter of the first triode (Q11)；
5 feet of the first latch, that is, ground terminal is ined succession ground wire, and the base stage of the 5th triode (Q5) is ined succession 4 feet of the first latch；5th
The emitter of triode (Q5) is ined succession ground wire.
7. a kind of dual input circuit for electric leakage protector as described in claim 1, it is characterised in that：The second latch cicuit packet
It includes：Second triode (Q22), the 9th diode (D9), the second latch and third transistor (Q3), the second triode (Q22)
Emitter and the 9th diode (D9) anode connection, the collector of the 9th triode (Q9) and 1 foot of the second latch are
Input terminal is connected, and the cathode of the 9th diode (D9) is ined succession ground wire, and 3 feet, that is, output terminal of the second latch is ined succession third transistor
(Q3) collector and port OUT；2 feet of the second latch, that is, power input is ined succession the emitter of the first triode (Q11)；
5 feet of the second latch, that is, ground terminal is ined succession ground wire, and the base stage of third transistor (Q3) is ined succession 4 feet of the second latch；Third
The emitter of triode (Q3) is ined succession ground wire.
8. a kind of dual input circuit for electric leakage protector as claimed in claim 5, it is characterised in that：The port T1 and port T2
External timing capacitor.
9. a kind of dual input circuit for electric leakage protector as claimed in claim 8, it is characterised in that：The port T1 or port T2
Function Extension of ining succession uses circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720871582.XU CN207504555U (en) | 2017-07-18 | 2017-07-18 | A kind of dual input circuit for electric leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720871582.XU CN207504555U (en) | 2017-07-18 | 2017-07-18 | A kind of dual input circuit for electric leakage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207504555U true CN207504555U (en) | 2018-06-15 |
Family
ID=62497615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720871582.XU Ceased CN207504555U (en) | 2017-07-18 | 2017-07-18 | A kind of dual input circuit for electric leakage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207504555U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154612A (en) * | 2017-07-18 | 2017-09-12 | 余姚市嘉荣电子电器有限公司 | A kind of dual input circuit for electric leakage protector |
-
2017
- 2017-07-18 CN CN201720871582.XU patent/CN207504555U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154612A (en) * | 2017-07-18 | 2017-09-12 | 余姚市嘉荣电子电器有限公司 | A kind of dual input circuit for electric leakage protector |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20191010 Decision number of declaring invalidation: 41887 Granted publication date: 20180615 |