CN209525702U - The dedicated buckle releaser circuit of pre-paying kilowatt-hour meter - Google Patents
The dedicated buckle releaser circuit of pre-paying kilowatt-hour meter Download PDFInfo
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Abstract
The dedicated buckle releaser circuit of the utility model pre-paying kilowatt-hour meter, including power circuit, delayed releasing circuit, meter voltage signal deteching circuit and voltage isolation circuit；The input terminal of power circuit connect with circuit breaker load end or breaker end of incoming cables and takes electricity, the output end of power circuit is connect with delayed releasing circuit, meter voltage signal inspection circuit and voltage isolation circuit respectively, is delayed releasing circuit, meter voltage signal examines circuit and voltage isolation circuit is powered；Meter voltage signal deteching circuit is connect with delayed releasing circuit and ammeter signal control terminal respectively；Voltage isolation circuit and power circuit, meter voltage signal deteching circuit and delayed releasing circuit connection.Voltage isolation circuit is arranged between breaker and ammeter signal control terminal in the application, when breaker open operation and automatically jumping, voltage isolation circuit is opened a way, it is formed at one and is physically isolated in meter voltage signal control terminal and circuit breaker load end, achieve the purpose that remove empty voltage so that both end voltage is isolated.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, in particular to a kind of dedicated buckle releaser circuit of pre-paying kilowatt-hour meter.
Background technique
Existing pre-paying kilowatt-hour meter definite purpose circuit breaker is connected to ammeter by signal wire, and is controlled by pre-paying kilowatt-hour meter: with
During family normally continues to pay dues, there are the voltages of AC220V or so for signal wire, and breaker can normal on/off switch at this time；Work as subscriber arrearage
When, pre-paying kilowatt-hour meter will cut off the control signal, and breaker will postpone a period of time tripping after signal cut, and client closes at this time
Lock breaker can be tripped again after combined floodgate.
Currently, most breaker with the dedicated buckle releaser attachment of pre-paying kilowatt-hour meter on the market, has in control signal wire
In the case where AC220V voltage, because pre-payment control circuit takes electricity in circuit breaker load end, circuit breaker load end phase line after separating brake
There are the empty voltages of size about AC110V or so between the neutral conductor.The empty voltage is produced because control signal wire is without physical isolation
Raw, user does not have the danger of electric shock, but can be measured by surveying ammeter or multimeter, user can not judge be empty voltage also
It is normal alternating current, is unfavorable for the use product that user security trusts.
Utility model content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of Interruption safety and stability, structure
The dedicated buckle releaser circuit of simple and compact pre-paying kilowatt-hour meter.
To achieve the above object, the utility model adopts the technical scheme that
A kind of dedicated buckle releaser circuit of pre-paying kilowatt-hour meter, including the inspection of power circuit, delayed releasing circuit, meter voltage signal
Slowdown monitoring circuit and voltage isolation circuit；The input terminal of the power circuit connect and takes with circuit breaker load end or breaker end of incoming cables
Electricity, the output end of the power circuit connect with delayed releasing circuit, meter voltage signal inspection circuit and voltage isolation circuit respectively
It connects, is delayed releasing circuit, meter voltage signal examines circuit and voltage isolation circuit is powered；The meter voltage signal detection electricity
Road is connect with delayed releasing circuit and ammeter signal control terminal L respectively；The voltage isolation circuit and power circuit, meter voltage
Signal deteching circuit and delayed releasing circuit connection.
Further, the voltage isolation circuit include be connected in series switch S and shunt opening coil KA, one end of switch S with
Power circuit connection, one end of shunt opening coil KA and meter voltage signal deteching circuit and delayed releasing circuit connection.
Further, the switch S is microswitch matched with the shunt release that breaker cooperates.
Further, the power circuit includes rectification circuit, anti-jamming circuit, reduction voltage circuit and voltage regulator circuit；It is described whole
The input terminal of current circuit is connect with circuit breaker load end or breaker end of incoming cables, the output end of rectification circuit and reduction voltage circuit
Input terminal connection, by AC rectification at output after direct current to reduction voltage circuit；The output end of the reduction voltage circuit and pressure stabilizing electricity
The input terminal on road connects, and electricity is isolated with delayed releasing circuit, meter voltage signal inspection circuit and voltage in the output end of voltage regulator circuit
Road connection；The anti-jamming circuit is connected between breaker and the input terminal of rectification circuit.
Further, the rectification circuit is full-wave rectification, including diode D1, diode D2, diode D3, diode
D4, diode D5, diode D6, diode D7 and diode D8；Diode D1, diode D2, diode D3, diode D4 with
Pole pipe D5, diode D6, diode D7 and diode D8 are connected in parallel after being connected in series respectively, diode D2 and two poles
The intermediate node and diode D6 of pipe D3 and the intermediate node of diode D7 and circuit breaker load end or breaker end of incoming cables connect
It connects, diode D1 is connect with the input terminal of the intermediate node of diode D5 and reduction voltage circuit, in diode D4 and diode D8
Intermediate node is isolated from voltage circuit connection.
Further, the reduction voltage circuit includes resistance R3 and resistance R4, and resistance R3 and resistance R4 are connected in series, resistance R3's
The connection of the negative pole of output end of one end and rectification circuit, one end of resistance R4 and the input terminal of voltage regulator circuit connect.
Further, the voltage regulator circuit includes voltage-stabiliser tube D10, and the cathode of voltage-stabiliser tube D10 and the output end of reduction voltage circuit connect
It connects, the anode of voltage-stabiliser tube D10 is connect with delayed releasing circuit, meter voltage signal inspection circuit and voltage isolation circuit.
Further, the anti-jamming circuit includes varistor RV1, and varistor RV1 is connected in circuit breaker load in parallel
Between end or any two-phase power supply line of breaker end of incoming cables.
Further, the meter voltage signal deteching circuit includes resistance R1, resistance R2, diode D9, polar capacitor C1
With triode Q1；Resistance R1, diode D9 and resistance R2 are sequentially connected in series, one end of resistance R1 and ammeter signal control terminal L
Connection, one end of resistance R2 are connect with the base stage of triode Q1, in the anode and diode D9 and resistance R2 of polar capacitor C1
Intermediate node connection, the cathode of polar capacitor C1 are connect with the emitter of triode Q1, the emitter and delayed releasing of triode Q1
Circuit is connected with power circuit, and the collector of triode Q1 is connect with delayed releasing circuit and power circuit.
Further, the delayed releasing circuit includes diode D11, resistance R5, resistance R6, polar capacitor C2, polarity electricity
Hold C3, silicon-controlled D12 and varistor RV2；The anode of the diode D11 is connect with power circuit, the cathode of diode D11
It is connect by resistance R5 with the control electrode of silicon-controlled D12, the middle node of the anode and diode D11 and resistance R5 of polar capacitor C2
Point connection, the cathode of polar capacitor C2 are connect with meter voltage signal deteching circuit and voltage isolation circuit, polar capacitor C3's
Anode is connect with the intermediate node of resistance R5 and silicon-controlled D12, the cathode and meter voltage signal deteching circuit of polar capacitor C3
It is connected with voltage isolation circuit, one end of resistance R6 is connect with the intermediate node of resistance R5 and silicon-controlled D12, the other end and ammeter
Voltage signal detection circuit is connected with voltage isolation circuit, and the anode of silicon-controlled D12 is connect with power circuit, silicon-controlled D12's
Cathode is connect with meter voltage signal deteching circuit, voltage isolation circuit and circuit, one end of varistor RV2 and power supply electricity
Road connection, other end ground connection.
The dedicated buckle releaser circuit of the utility model pre-paying kilowatt-hour meter, including power circuit, delayed releasing circuit, meter voltage
Signal deteching circuit and voltage isolation circuit；The input terminal of power circuit is connect with circuit breaker load end or breaker end of incoming cables
Electricity is taken, the output end of power circuit is connect with delayed releasing circuit, meter voltage signal inspection circuit and voltage isolation circuit respectively；
Meter voltage signal deteching circuit is connect with delayed releasing circuit and ammeter signal control terminal L respectively；Voltage isolation circuit and electricity
Source circuit, meter voltage signal deteching circuit and delayed releasing circuit connection, the application is in breaker and ammeter signal control terminal
Between voltage isolation circuit is set, when breaker closing voltage isolation circuit be closed, precharging circuit work normally；Work as open circuit
Voltage isolation circuit is opened a way when device separating brake and automatically jumping, is formed at one in meter voltage signal control terminal and circuit breaker load end
Physical isolation achievees the purpose that remove empty voltage, the voltage isolation when breaker open operation and automatically jumping so that both end voltage is isolated
Open circuit also forms at one between the input terminal and output end of power circuit and is physically isolated, both end voltage, power circuit is isolated
It stops working, achievees the purpose that the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter in breaker end of incoming cables or the desirable electricity of load end.
Detailed description of the invention
Fig. 1 is the frame construction drawing of the dedicated buckle releaser circuit of the utility model pre-paying kilowatt-hour meter；
Fig. 2 is the physical circuit figure of the dedicated buckle releaser circuit of the utility model pre-paying kilowatt-hour meter.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1 to 2 provides, the dedicated tripping of the pre-paying kilowatt-hour meter of the utility model is further illustrated
The specific embodiment of device circuit.The dedicated buckle releaser circuit of the pre-paying kilowatt-hour meter of the utility model is not limited to retouching for following embodiment
It states.
As shown in Figure 1, 2, the dedicated buckle releaser circuit of the utility model pre-paying kilowatt-hour meter, including power circuit, delayed releasing
Circuit, meter voltage signal deteching circuit and voltage isolation circuit；The input terminal of power circuit and circuit breaker load end are disconnected
The connection of road device end of incoming cables takes electricity, and the output end of power circuit examines circuit and electricity with delayed releasing circuit, meter voltage signal respectively
Isolation circuit connection is pressed, is delayed releasing circuit, meter voltage signal examines circuit and voltage isolation circuit is powered；Meter voltage letter
Number detection circuit is connect with delayed releasing circuit and ammeter signal control terminal L respectively；Voltage isolation circuit and power circuit, ammeter
Voltage signal detection circuit and delayed releasing circuit connection.The dedicated buckle releaser circuit of the utility model pre-paying kilowatt-hour meter, including electricity
Source circuit, delayed releasing circuit, meter voltage signal deteching circuit and voltage isolation circuit；The input terminal of power circuit and open circuit
Device load end or the connection of breaker end of incoming cables take electricity, the output end of power circuit respectively with delayed releasing circuit, meter voltage
Signal inspection circuit is connected with voltage isolation circuit；Meter voltage signal deteching circuit respectively with delayed releasing circuit and ammeter signal
Control terminal L connection；Voltage isolation circuit and power circuit, meter voltage signal deteching circuit and delayed releasing circuit connection, this
Voltage isolation circuit is arranged between breaker and ammeter signal control terminal in application, and when breaker closing, voltage isolation circuit is closed
It closes, precharging circuit works normally；When breaker open operation and automatically jumping, voltage isolation circuit is opened a way, in meter voltage signal
Control terminal and circuit breaker load end form at one and are physically isolated, and achieve the purpose that remove empty voltage so that both end voltage is isolated, when disconnected
Voltage isolation circuit is opened a way when road device separating brake and automatically jumping, also forms object at one between the input terminal and output end of power circuit
Reason isolation, is isolated both end voltage, and power circuit stops working, and reaches the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter in breaker inlet wire
End or load end can use the purpose of electricity.
As shown in Fig. 2, the utility model voltage isolation circuit includes the switch S and shunt opening coil KA being connected in series, switch S
One end connect with power circuit, one end of shunt opening coil KA and meter voltage signal deteching circuit and delayed releasing circuit connect
It connects.Further, switch S is microswitch matched with the shunt release that breaker cooperates.Voltage isolation circuit directly uses
Shunt release and its matched microswitch, with realize the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter and breaker body synchronize connect
Logical and disjunction；When breaker closing, breaker rotating axis rotation drives fine motion putter action, and microswitch is converted by normally opened contact
For normally-closed contact, i.e. voltage isolation circuit is closed, and the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter works normally；When breaker open operation and
Product shaft discharges fine motion push rod when automatically jumping, and microswitch is converted to normally opened contact, i.e. voltage isolation electricity by normally-closed contact
It is physically isolated at the one of road open circuit, voltage isolation circuit the first achievable ammeter signal control terminal L of open circuit and circuit breaker load end,
Achieve the purpose that remove empty voltage so that both end voltage is isolated, second may be implemented in object at the one of power circuit input terminal and output end
Reason isolation, power circuit stop working, and it is equal from breaker end of incoming cables or load end to reach the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter
It can use the purpose of electricity.
As shown in Fig. 2, the utility model power circuit includes rectification circuit, anti-jamming circuit, reduction voltage circuit and pressure stabilizing electricity
Road；The input terminal of rectification circuit is connect with circuit breaker load end or breaker end of incoming cables, the output end of rectification circuit and decompression
The input terminal of circuit connects, by AC rectification at output after direct current to reduction voltage circuit；The output end of reduction voltage circuit and pressure stabilizing
The input terminal of circuit connects, and the output end of voltage regulator circuit is isolated with delayed releasing circuit, meter voltage signal inspection circuit and voltage
Circuit connection；Anti-jamming circuit is connected between breaker and the input terminal of rectification circuit.The utility model circuit construction of electric power
It is simple and compact, it is at low cost.
As shown in Fig. 2, specifically, the utility model rectification circuit is full-wave rectification, including diode D1, diode D2,
Diode D3, diode D4, diode D5, diode D6, diode D7 and diode D8；Diode D1, diode D2, two poles
Pipe D3, diode D4 and pole pipe D5, diode D6, diode D7 and diode D8 are connected in one in parallel after being connected in series respectively
Rise, the intermediate node and diode D6 of diode D2 and diode D3 and the intermediate node of diode D7 and circuit breaker load end or
The connection of person's breaker end of incoming cables, diode D1 are connect with the input terminal of the intermediate node of diode D5 and reduction voltage circuit, diode
The intermediate node of D4 and diode D8 is isolated from voltage circuit connection.The utility model rectification circuit is by externally input exchange
Electricity is converted into the available direct current of other circuits, and rectification circuit can also use halfwave rectifier, and the structure of rectification circuit is simple,
It is at low cost.
As shown in Fig. 2, specifically, the utility model reduction voltage circuit includes resistance R3 and resistance R4, resistance R3 and resistance R4
It is connected in series, one end of resistance R3 and the negative pole of output end of rectification circuit connect, one end of resistance R4 and the input of voltage regulator circuit
End connection.The utility model reduction voltage circuit supplies subsequent conditioning circuit after reducing voltage.
As shown in Fig. 2, specifically, the utility model voltage regulator circuit includes voltage-stabiliser tube D10, the cathode and drop of voltage-stabiliser tube D10
The output end of volt circuit connects, and the anode of voltage-stabiliser tube D10 is isolated with delayed releasing circuit, meter voltage signal inspection circuit and voltage
Circuit connection provides pressure stabilization function for delayed releasing circuit (when ammeter signal control terminal L no-voltage signal).
As shown in Fig. 2, specifically, the utility model anti-jamming circuit includes varistor RV1, varistor RV1 is in parallel
It is connected between circuit breaker load end or any two-phase power supply line of breaker end of incoming cables.The utility model anti-jamming circuit is used
In filtering interference signals, circuit performance is improved.
As shown in Fig. 2, the utility model meter voltage signal deteching circuit includes resistance R1, resistance R2, diode D9, pole
Property capacitor C1 and triode Q1；Resistance R1, diode D9 and resistance R2 are sequentially connected in series, one end of resistance R1 and ammeter signal
Control terminal L connection, one end of resistance R2 are connect with the base stage of triode Q1, anode and diode D9 and the resistance of polar capacitor C1
The intermediate node of R2 connects, and the cathode of polar capacitor C1 is connect with the emitter of triode Q1, the emitter of triode Q1 with prolong
When trip circuit connected with power circuit, the collector of triode Q1 is connect with delayed releasing circuit and power circuit.This is practical
Ammeter voltage signal detection circuit, it is simple and compact for structure for detecting the voltage signal of ammeter signal control terminal.
As shown in Fig. 2, delayed releasing circuit includes diode D11, resistance R5, resistance R6, polar capacitor C2, polar capacitor
C3, silicon-controlled D12 and varistor RV2；The anode of diode D11 is connect with power circuit, and the cathode of diode D11 is by electricity
Resistance R5 is connect with the control electrode of silicon-controlled D12, and the anode of polar capacitor C2 connects with the intermediate node of diode D11 and resistance R5
It connects, the cathode of polar capacitor C2 is connect with meter voltage signal deteching circuit and voltage isolation circuit, the anode of polar capacitor C3
It is connect with the intermediate node of resistance R5 and silicon-controlled D12, the cathode and meter voltage signal deteching circuit and electricity of polar capacitor C3
Isolation circuit connection is pressed, one end of resistance R6 is connect with the intermediate node of resistance R5 and silicon-controlled D12, the other end and meter voltage
Signal deteching circuit is connected with voltage isolation circuit, and the anode of silicon-controlled D12 is connect with power circuit, the cathode of silicon-controlled D12
It is connect with meter voltage signal deteching circuit, voltage isolation circuit and circuit, one end of varistor RV2 and power circuit connect
It connects, other end ground connection.The utility model delayed releasing circuit is simple and compact.
1,2 working principle for illustrating the utility model Yu the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter with reference to the accompanying drawing.
When ammeter signal control terminal L output voltage signal, the triode Q1 work of meter voltage signal deteching circuit is led
It is logical, it is shorted voltage-stabiliser tube D10, delayed releasing circuit can not work, buckle releaser akinesia.
When ammeter signal control terminal L no-voltage signal, meter voltage signal deteching circuit triode Q1 cut-off, voltage-stabiliser tube
The work of delayed releasing circuit, silicon-controlled D12 conducting, shunt opening coil energized action, circuit breaker tripping is connected in D10.
If the dedicated buckle releaser circuit of the application pre-paying kilowatt-hour meter takes electricity from circuit breaker load end, when breaker open operation and freedom
Microswitch is opened a way when tripping, i.e., realizes between ammeter signal control terminal and circuit breaker load end and be physically isolated at one, pass through this
Place's physical isolation realizes removal circuit breaker load end empty voltage；If the dedicated buckle releaser circuit of the application pre-paying kilowatt-hour meter is from breaker
End of incoming cables takes electricity, works as breaker open operation, microswitch open circuit and breaker open circuit when automatically jumping, i.e. ammeter signal control terminal with
Realize between circuit breaker load end and be physically isolated at two, by this at two physical isolation realize the empty electricity in removal circuit breaker load end
Pressure.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (10)
1. a kind of dedicated buckle releaser circuit of pre-paying kilowatt-hour meter, it is characterised in that: including power circuit, delayed releasing circuit, ammeter
Voltage signal detection circuit and voltage isolation circuit；
The input terminal of the power circuit connect with circuit breaker load end or breaker end of incoming cables and takes electricity, the power circuit
Output end respectively with delayed releasing circuit, meter voltage signal inspection circuit and voltage isolation circuit connect, for delayed releasing circuit,
Meter voltage signal examines circuit and voltage isolation circuit power supply；
The meter voltage signal deteching circuit is connect with delayed releasing circuit and ammeter signal control terminal L respectively；
The voltage isolation circuit and power circuit, meter voltage signal deteching circuit and delayed releasing circuit connection.
2. the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter according to claim 1, it is characterised in that: the voltage isolation circuit
Switch S and shunt opening coil KA including series connection, one end of switch S are connect with power circuit, one end of shunt opening coil KA with
Meter voltage signal deteching circuit and delayed releasing circuit connection.
3. the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter according to claim 2, it is characterised in that: the switch S is and breaks
The matched microswitch of shunt release of road device cooperation.
4. the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter according to claim 1 to 3, it is characterised in that: the power supply electricity
Road includes rectification circuit, anti-jamming circuit, reduction voltage circuit and voltage regulator circuit；The input terminal and circuit breaker load of the rectification circuit
The input terminal of end or the connection of breaker end of incoming cables, the output end of rectification circuit and reduction voltage circuit connects, by AC rectification at
It exports after direct current to reduction voltage circuit；The output end of the reduction voltage circuit and the input terminal of voltage regulator circuit connect, voltage regulator circuit
Output end is connect with delayed releasing circuit, meter voltage signal inspection circuit and voltage isolation circuit；The anti-jamming circuit connection
Between breaker and the input terminal of rectification circuit.
5. the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter according to claim 4, it is characterised in that: the rectification circuit is complete
Wave rectification, including diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7 and two
Pole pipe D8；Diode D1, diode D2, diode D3, diode D4 and pole pipe D5, diode D6, diode D7 and diode
D8 is connected in parallel after being connected in series respectively, the intermediate node and diode D6 and diode of diode D2 and diode D3
The intermediate node of D7 is connect with circuit breaker load end or breaker end of incoming cables, the intermediate node of diode D1 and diode D5 with
The input terminal of reduction voltage circuit connects, and the intermediate node of diode D4 and diode D8 are isolated from voltage circuit connection.
6. the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter according to claim 4, it is characterised in that: the reduction voltage circuit includes
Resistance R3 and resistance R4, resistance R3 and resistance R4 are connected in series, and one end of resistance R3 and the negative pole of output end of rectification circuit connect,
One end of resistance R4 and the input terminal of voltage regulator circuit connect.
7. the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter according to claim 4, it is characterised in that: the voltage regulator circuit includes
The cathode of voltage-stabiliser tube D10, voltage-stabiliser tube D10 and the output end of reduction voltage circuit connect, anode and the delayed releasing electricity of voltage-stabiliser tube D10
Road, meter voltage signal inspection circuit are connected with voltage isolation circuit.
8. the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter according to claim 4, it is characterised in that: the anti-jamming circuit packet
Varistor RV1 is included, varistor RV1 is connected in any two-phase power supply of circuit breaker load end or breaker end of incoming cables in parallel
Between line.
9. the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter according to claim 1 to 3, it is characterised in that: the ammeter electricity
Pressing signal deteching circuit includes resistance R1, resistance R2, diode D9, polar capacitor C1 and triode Q1；Resistance R1, diode D9
It is sequentially connected in series with resistance R2, one end of resistance R1 is connect with ammeter signal control terminal L, one end of resistance R2 and triode Q1
Base stage connection, polar capacitor C1 anode connect with the intermediate node of diode D9 and resistance R2, the cathode of polar capacitor C1
It is connect with the emitter of triode Q1, the emitter of triode Q1 is connect with delayed releasing circuit and power circuit, triode Q1
Collector connect with delayed releasing circuit and power circuit.
10. the dedicated buckle releaser circuit of pre-paying kilowatt-hour meter according to claim 1 to 3, it is characterised in that: the delay
Trip circuit includes diode D11, resistance R5, resistance R6, polar capacitor C2, polar capacitor C3, silicon-controlled D12 and varistor
RV2；
The anode of the diode D11 is connect with power circuit, and the cathode of diode D11 is by resistance R5's and silicon-controlled D12
The anode of control electrode connection, polar capacitor C2 is connect with the intermediate node of diode D11 and resistance R5, the cathode of polar capacitor C2
It is connect with meter voltage signal deteching circuit and voltage isolation circuit, anode and the resistance R5 and silicon-controlled D12 of polar capacitor C3
Intermediate node connection, the cathode of polar capacitor C3 connect with meter voltage signal deteching circuit and voltage isolation circuit, resistance
One end of R6 is connect with the intermediate node of resistance R5 and silicon-controlled D12, the other end and meter voltage signal deteching circuit and voltage
Isolation circuit connection, the anode of silicon-controlled D12 are connect with power circuit, the cathode and meter voltage signal detection of silicon-controlled D12
It connects to circuit, voltage isolation circuit and circuit, one end of varistor RV2 is connect with power circuit, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920421330.6U CN209525702U (en) | 2019-04-01 | 2019-04-01 | The dedicated buckle releaser circuit of pre-paying kilowatt-hour meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920421330.6U CN209525702U (en) | 2019-04-01 | 2019-04-01 | The dedicated buckle releaser circuit of pre-paying kilowatt-hour meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209525702U true CN209525702U (en) | 2019-10-22 |
Family
ID=68231928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920421330.6U Active CN209525702U (en) | 2019-04-01 | 2019-04-01 | The dedicated buckle releaser circuit of pre-paying kilowatt-hour meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209525702U (en) |
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2019
- 2019-04-01 CN CN201920421330.6U patent/CN209525702U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of utility model: Special release circuit for prepayment meter Granted publication date: 20191022 License type: Common License Record date: 20201021 |
|
| EE01 | Entry into force of recordation of patent licensing contract |