CN207039167U - Air-conditioning leakage protection circuit - Google Patents
Air-conditioning leakage protection circuit Download PDFInfo
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- CN207039167U CN207039167U CN201720961488.3U CN201720961488U CN207039167U CN 207039167 U CN207039167 U CN 207039167U CN 201720961488 U CN201720961488 U CN 201720961488U CN 207039167 U CN207039167 U CN 207039167U
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Abstract
It the utility model is related to a kind of air-conditioning leakage protection circuit, including single phase rectifier circuit, input circuit, output circuit, integrated circuit M54123, instruction and inspection circuit, the wherein output end connection integrated circuit M54123 of input circuit input, the output end of integrated circuit M54123 and single phase rectifier circuit connects the input of output circuit respectively, instruction and inspection circuit are connected on single phase rectifier circuit, indicate and examine the LED 1 on circuit that air-conditioning can be indicated whether in electric leakage, press test switch SW1, drain conditions can be simulated, become big by the electric current of magnetictrip coil, examine whether single-phase leakage protection circuit is in normal guard mode with this.
Description
Technical field
It the utility model is related to a kind of circuit, more particularly to a kind of air-conditioning leakage protection circuit.
Background technology
Many newly-built communities install earth leakage protective device for the distribution box of each household at present, electric leakage reach 30 milliamperes just have it is disconnected
It is electrically operated, but 30 milliamperes of electric current is enough to allow human body by different degrees of injury, and also old distribution box is that electric leakage is not present
Protection device, in the event of electrical leakage, can give people to bring serious harm even life security, leakage protection circuit also may be used
Can because of the usage time can not normal protection circuit, instruction is also lacked for electrical leakage.
The content of the invention
In view of this, the purpose of this utility model is that earth leakage protective can be realized by providing one kind, and examines earth leakage protective electricity
Road can the air-conditioning leakage protection circuit that indicates safely of normal work, band.
In order to realize the above object the utility model uses such a air-conditioning leakage protection circuit, including single-phase rectifier
The output end connection of circuit, input circuit, output circuit, integrated circuit M54123, instruction and inspection circuit, wherein input circuit
The output end of integrated circuit M54123 input, integrated circuit M54123 and single phase rectifier circuit connects output circuit respectively
Input, instruction and inspection circuit are connected on single phase rectifier circuit, and instruction and the inspection circuit includes resistance R1, R3, tests
Switch SW1, diode D1, LED 1, wherein test switch SW1 and resistance R3 inspection circuit in series, experiment
Switch SW1 one end connection zero line N, resistance R3 one end connection live wire L, LED 1, resistance R1, diode D1 series connection structures
Into indicating circuit, positive pole connection the zero line N, diode D1 of LED 1 negative pole connection live wire L.
Whether the indicating circuit of LED 1 of foregoing circuit leaks electricity, and presses test switch SW1, can simulate electric leakage
Situation, examine whether air-conditioning leakage protection circuit is in normal guard mode with this.
This practicality, which is further arranged to single phase rectifier circuit, includes terminals J1, bidirectional trigger diode VR1, rectifier bridge
BR1, magnetictrip coil L2, the terminals J1 connections single-phase zero line and live wire, bidirectional trigger diode VR1 are connected to
Terminals J1 both ends, rectifier bridge BR1 are connected to terminals J1 both ends, rectifier bridge V- ends ground connection, rectifier bridge V+ termination electromagnetic trips
Device coil L2 one end.
Foregoing circuit carries out rectification to single-phase electricity, and a forward voltage, bidirectional trigger diode energy are provided to output circuit
Overvoltage protection is formed to circuit.
This practicality, which is further arranged to input circuit, includes mutual inductor coil L1, resistance R4, electric capacity C5, C6, the mutual inductance
Device coil L1, resistance R4, electric capacity C5 are connected in parallel on the 1 of integrated circuit M54123,2 pins respectively, and electric capacity C6 one end is connected to collection
Into on circuit M54123 2 pins, electric capacity C6 other ends ground connection.
Slowdown monitoring circuit to be checked after mutual inductor coil L1 decompressions, is sent to integrated circuit M54123 input by foregoing circuit,
Electric capacity composition RC delay circuits in parallel with a resistor.
This practicality, which is further arranged to output circuit, includes electric capacity C1, C2, C3, resistance R2, IGCT Q1, the electric capacity C2
Integrated circuit M54123 6,7 pins are connected to, electric capacity C1 one end is connected on integrated circuit M54123 7 pins, electric capacity C1
The other end is grounded, and electric capacity C3 one end is connected on integrated circuit M54123 8 pins, electric capacity C3 other end ground connection, resistance R2
One end is connected on integrated circuit M54123 8 pins, and the resistance R2 other end is connected to IGCT Q1 anode, IGCT Q1
Gate pole connection integrated circuit M54123 7 pins on, IGCT Q1 minus earth.
Integrated circuit M54123 output signal is connected to the gate pole of IGCT by foregoing circuit, with the controllable spy of IGCT
Property realize the conducting of output circuit, when exceeding rated current by the electric current of magnetictrip coil, will realize that dropout is disconnected
Open circuit power supply.
Brief description of the drawings
Fig. 1 is the utility model embodiment air-conditioning leakage protection circuit schematic diagram.
Embodiment
As shown in figure 1, the utility model is a kind of air-conditioning leakage protection circuit, including single phase rectifier circuit 2, input circuit
3rd, the output end connection integrated circuit of output circuit 4, integrated circuit M54123, instruction and inspection circuit 1, wherein input circuit 3
The output end of M54123 input, integrated circuit M54123 and single phase rectifier circuit 2 connects the input of output circuit 3 respectively
End, instruction and inspection circuit 1 are connected on single phase rectifier circuit 2.
The each several part physical circuit of above-mentioned air-conditioning leakage protection circuit is as follows：
(1) indicate and examine circuit 1 to include resistance R1, R3, test switch SW1, diode D1, LED 1,
Wherein test switch SW1 and resistance R3 inspection circuits in series, test switch SW1 one end connection zero line N, resistance R3 one end connects
Start to exchange fire line L, LED 1, resistance R1, diode D1 indicating circuits in series, and the positive pole of LED 1 connects
Connecting to neutral line N, diode D1 negative pole connection live wire L.
(2) single phase rectifier circuit 2 includes terminals J1, bidirectional trigger diode VR1, rectifier bridge BR1, magnetictrip line
L2, wherein terminals J1 connections single-phase zero line and live wire are enclosed, bidirectional trigger diode VR1 is connected to terminals J1 both ends, whole
Stream bridge BR1 is connected to terminals J1 both ends, rectifier bridge V- ends ground connection, rectifier bridge V+ termination magnetictrip coils L2 one end.
(3) input circuit 3 includes mutual inductor coil L1, resistance R4, electric capacity C5, C6, wherein mutual inductor coil L1, resistance
R4, electric capacity C5 are connected in parallel on the 1 of integrated circuit M54123,2 pins respectively, and electric capacity C6 one end is connected to integrated circuit M54123's
On 2 pins, electric capacity C6 other ends ground connection.
(4) output circuit 4 includes electric capacity C1, C2, C3, resistance R2, IGCT Q1, and wherein electric capacity C2 is connected to integrated circuit
M54123 6,7 pins, electric capacity C1 one end are connected on integrated circuit M54123 7 pins, electric capacity C1 other ends ground connection, electric capacity
C3 one end is connected on integrated circuit M54123 8 pins, and electric capacity C3 other end ground connection, resistance R2 one end is connected to integrated electricity
On road M54123 8 pins, the resistance R2 other end is connected to IGCT Q1 anode, the IGCT Q1 integrated electricity of gate pole connection
On road M54123 7 pins, IGCT Q1 minus earth.
According to above example, when input circuit mutual inductor coil L1 detects electric leakage signal, through resistance R4 and electric capacity C5
Integrated circuit M54123 is input to after the RC delay circuits delay of composition, and integrated circuit M54123 is by after signal transacting, in 7 pins
Electric leakage signal is exported to output circuit, turns on IGCT Q1, single phase rectifier circuit also turns on turn on thyristors, works as process
When the electric current of process is more than magnetictrip coil L2 rated current, magnetictrip will thread off, and power supply will disconnect, hair
Optical diode LED1 extinguishes therewith, protects personal safety；When pressing test switch SW1, analog circuit drain conditions, same warp
The electric current for crossing magnetictrip coil becomes big, examines whether single-phase leakage protection circuit is in normal guard mode with this.
Claims (5)
1. a kind of air-conditioning leakage protection circuit, including single phase rectifier circuit, input circuit, output circuit, integrated circuit M54123,
The wherein output end connection integrated circuit M54123 of input circuit input, integrated circuit M54123 and single phase rectifier circuit
Output end connects the input of output circuit respectively, it is characterised in that：The air-conditioning leakage protection circuit also includes instruction and inspection
Electrical verification road, instruction and inspection circuit are connected on single phase rectifier circuit, and instruction and the inspection circuit includes resistance R1, R3, tests
Switch SW1, diode D1, LED 1, wherein test switch SW1 and resistance R3 inspection circuit in series, experiment
Switch SW1 one end connection zero line N, resistance R3 one end connection live wire L, LED 1, resistance R1, diode D1 series connection structures
Into indicating circuit, positive pole connection the zero line N, diode D1 of LED 1 negative pole connection live wire L.
2. air-conditioning leakage protection circuit according to claim 1, it is characterised in that：The single phase rectifier circuit includes wiring
Hold J1, bidirectional trigger diode VR1, rectifier bridge BR1, magnetictrip coil L2, the single-phase zero line of the terminals J1 connections
And live wire, bidirectional trigger diode VR1 are connected to terminals J1 both ends, rectifier bridge BR1 is connected to terminals J1 both ends, rectifier bridge
V- ends are grounded, rectifier bridge V+ termination magnetictrip coils L2 one end.
3. air-conditioning leakage protection circuit according to claim 1 or 2, it is characterised in that：The input circuit includes mutual inductance
Device coil L1, resistance R4, electric capacity C5, C6, the mutual inductor coil L1, resistance R4, electric capacity C5 are connected in parallel on integrated circuit respectively
On M54123 1,2 pins, electric capacity C6 one end is connected on integrated circuit M54123 2 pins, electric capacity C6 other ends ground connection.
4. air-conditioning leakage protection circuit according to claim 1 or 2, it is characterised in that：The output circuit includes electric capacity
C1, C2, C3, resistance R2, IGCT Q1, the electric capacity C2 are connected to the 6 of integrated circuit M54123,7 pins, and electric capacity C1 one end connects
It is connected on integrated circuit M54123 7 pins, electric capacity C1 other ends ground connection, electric capacity C3 one end is connected to integrated circuit M54123's
On 8 pins, electric capacity C3 other end ground connection, resistance R2 one end is connected on integrated circuit M54123 8 pins, and resistance R2's is another
One end is connected to IGCT Q1 anode, and IGCT Q1 gate pole is connected on integrated circuit M54123 7 pins, IGCT Q1's
Minus earth.
5. air-conditioning leakage protection circuit according to claim 3, it is characterised in that：The output circuit include electric capacity C1,
C2, C3, resistance R2, IGCT Q1, the electric capacity C2 are connected to the 6 of integrated circuit M54123,7 pins, the connection of electric capacity C1 one end
On integrated circuit M54123 7 pins, electric capacity C1 other ends ground connection, electric capacity C3 one end is connected to the 8 of integrated circuit M54123
On pin, electric capacity C3 other end ground connection, resistance R2 one end is connected on integrated circuit M54123 8 pins, and resistance R2's is another
One end is connected to IGCT Q1 anode, and IGCT Q1 gate pole is connected on integrated circuit M54123 7 pins, IGCT Q1's
Minus earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720961488.3U CN207039167U (en) | 2017-08-03 | 2017-08-03 | Air-conditioning leakage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720961488.3U CN207039167U (en) | 2017-08-03 | 2017-08-03 | Air-conditioning leakage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207039167U true CN207039167U (en) | 2018-02-23 |
Family
ID=61474000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720961488.3U Active CN207039167U (en) | 2017-08-03 | 2017-08-03 | Air-conditioning leakage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207039167U (en) |
-
2017
- 2017-08-03 CN CN201720961488.3U patent/CN207039167U/en active Active
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