CN110297151A - A kind of observation circuit protection circuit of ground fault earth leakage protective device operation troubles - Google Patents
A kind of observation circuit protection circuit of ground fault earth leakage protective device operation troubles Download PDFInfo
- Publication number
- CN110297151A CN110297151A CN201910437601.1A CN201910437601A CN110297151A CN 110297151 A CN110297151 A CN 110297151A CN 201910437601 A CN201910437601 A CN 201910437601A CN 110297151 A CN110297151 A CN 110297151A
- Authority
- CN
- China
- Prior art keywords
- resistance
- foot
- triode
- earth leakage
- leakage protective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of observation circuits of ground fault earth leakage protective device operation troubles to protect circuit, including pcb board, the pcb board is equipped with monitoring and protecting circuit, contain earth leakage protective chip U1 and microprocessor chip U2 in monitoring and protecting circuit, the foot 1 of the earth leakage protective chip U1, foot 3 is connected to the foot 1 of electric leakage magnet ring L1, foot 2, the magnet ring L1 that leaks electricity is set between firewire L and zero curve N, series resistance R30 is connected to after the 4 serial capacitance C9 of foot of the earth leakage protective chip U1, the both ends of zener diode Z1, series resistance R30 is connected to the foot 3 of rectifier diode ZL1.The observation circuit of this ground fault earth leakage protective device operation troubles protects circuit, and circuit whole design is perfect, powered stable, by the monitoring component of setting come observation circuit, so that optical signal can be issued in time when component failure, to remind operator to handle in time.
Description
Technical field
The present invention relates to earth leakage protective socket technical field, specially a kind of ground fault earth leakage protective device operation troubles
Observation circuit protects circuit.
Background technique
Earth leakage protective socket is widely used in household and industry, can effectively improve Electrical Safety.Due to guarantor of leaking electricity at present
There are certain defects for circuit design in retaining socket, lead to circuit power supply instability, and lack corresponding malfunction monitoring member device
Part can not issue monitoring signals in time.
Summary of the invention
The purpose of the present invention is to provide a kind of observation circuits of ground fault earth leakage protective device operation troubles to protect circuit,
Circuit whole design is perfect, powered stable, by the monitoring component of setting come observation circuit, so that can when component failure
Optical signal is issued in time solves the problems of the prior art to remind operator to handle in time.
To achieve the above object, the invention provides the following technical scheme: a kind of ground fault earth leakage protective device operation troubles
Observation circuit protect circuit, including pcb board, the pcb board is equipped with monitoring and protecting circuit, contains leakage in monitoring and protecting circuit
Electric protection chip U1 and microprocessor chip U2, foot 1, the foot 3 of the earth leakage protective chip U1 are connected to electric leakage magnet ring L1
Foot 1, foot 2, electric leakage magnet ring L1 be set between firewire L and zero curve N, after the 4 serial capacitance C9 of foot of the earth leakage protective chip U1
The both ends of series resistance R30, zener diode Z1 are connected to, series resistance R30 is connected to the foot 3 of rectifier diode ZL1, pressure stabilizing
Diode Z1 is connect after being connected to capacitor C3, capacitor C7 and resistance R5 in parallel with the foot 4 of rectifier diode ZL1, the electric leakage
The foot 5 of protection chip U1 is connected to resistance R9, resistance R29 and capacitor C3, and resistance R9 is connected to the base stage of triode Q1, electricity
Resistance R29 is connected to the collector of triode Q6, and capacitor C3 is connected on the circuit interface of switch S2, the earth leakage protective chip U1
Foot 6 be connected to 25V-26V voltage and resistance R3, be connected to after resistance R3 series diode D2 concatenated thyristor K2 with
Thyristor K3；The base stage of triode Q2 is connected to after the 2 series resistor R12 of foot of the microprocessor chip U2, triode Q2's
Emitter-base bandgap grading is connected to 5V voltage, is connected to thyristor K1, thyristor after the collector series connection resistance R14 and resistance R15 of triode Q2
Triode is connected to after being connected to load LD, the 6 series resistor R17 of foot of the microprocessor chip U2 after K1 series resistor R16
The base stage of Q3, the emitter-base bandgap grading of triode Q3 are connected to resistance R18 and capacitor C11 in parallel and are followed by 5V voltage, the current collection of triode Q3
It connect after pole series resistor R19, resistance R20 with switch S2, is connected after the 7 series resistor R21 of foot of the microprocessor chip U2
In the base stage of triode Q4, the emitter-base bandgap grading of triode Q4 is connected to 5V voltage, collector series connection resistance R25, the resistance of triode Q4
The base stage of triode Q5 is connected to after R26, the collector of triode Q5 is connected to resistance R23, and resistance R23 is parallel to thyristor K2
Both ends.
Preferably, the base stage of the triode Q6 is connected to concatenated resistance R27 and resistance R28, series resistance R27 and electricity
One end of resistance R28 is connected to 5V voltage, connect after other end series diode D5 with concatenated thyristor K2, thyristor K3.
Preferably, 5V voltage is connected to after the collector series connection resistance R10 of the triode Q1.
Preferably, the thyristor K2 is connected to coil L3, is connected to firewire L after coil L3 concatenation fuse F1.
Preferably, 5V voltage and resistance R6, resistance R6 difference are connected to after the switch S2 series resistor R7 and resistance R8
It is connected to light emitting diode D3 and light emitting diode D4.
Compared with prior art, beneficial effects of the present invention are as follows:
The observation circuit of this ground fault earth leakage protective device operation troubles protects circuit, and circuit whole design is perfect, passes through
Halfwave rectifier is earth leakage protective chip U1 power supply, is microprocessor chip U2 power supply and pressure stabilizing by full-wave rectification, is based on shining
The red green light that diode D3 and light emitting diode D4 is issued, comes whether reaction monitoring component breaks down, effective solution
Prior art problem.
Detailed description of the invention
Fig. 1 is circuit diagram of the invention；
Fig. 2 is pcb board top view of the invention.
In figure: 1, pcb board；2, monitoring and protecting circuit.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of observation circuit of ground fault earth leakage protective device operation troubles protects circuit, including PCB referring to FIG. 1-2,
Plate 1, pcb board 1 are equipped with monitoring and protecting circuit 2, contain earth leakage protective chip U1 and microprocessor chip in monitoring and protecting circuit 2
Foot 1, the foot 3 of U2, earth leakage protective chip U1 be connected to electric leakage magnet ring L1 foot 1, foot 2, electric leakage magnet ring L1 be set to firewire L with
Between zero curve N, be connected to after the 4 serial capacitance C9 of foot of earth leakage protective chip U1 series resistance R30, zener diode Z1 two
End, series resistance R30 are connected to the foot 3 of rectifier diode ZL1, and zener diode Z1 is connected to capacitor C3, capacitor C7 in parallel
It is connect with the foot 4 after resistance R5 with rectifier diode ZL1, the foot 5 of earth leakage protective chip U1 is connected to resistance R9, resistance
R29 and capacitor C3, resistance R9 are connected to the base stage of triode Q1, are connected to 5V after the collector series connection resistance R10 of triode Q1
Voltage, resistance R29 are connected to the collector of triode Q6, and the base stage of triode Q6 is connected to concatenated resistance R27 and resistance
One end of R28, series resistance R27 and resistance R28 are connected to 5V voltage, after other end series diode D5 with concatenated thyristor
K2, thyristor K3 connection, thyristor K2 are connected to coil L3, are connected to firewire L after coil L3 concatenation fuse F1, capacitor C3 connects
It is connected on the circuit interface of switch S2, the foot 6 of earth leakage protective chip U1 is connected to 25V-26V voltage and resistance R3, resistance
Concatenated thyristor K2 and thyristor K3 are connected to after R3 series diode D2.
The base stage of triode Q2 is connected to after the 2 series resistor R12 of foot of microprocessor chip U2, the emitter-base bandgap grading of triode Q2 connects
It is connected to 5V voltage, thyristor K1, thyristor K1 concatenation are connected to after the collector series connection resistance R14 and resistance R15 of triode Q2
It is connected to load LD after resistance R16, is connected to the base stage of triode Q3 after the 6 series resistor R17 of foot of microprocessor chip U2, three
The emitter-base bandgap grading of pole pipe Q3 is connected to resistance R18 and capacitor C11 in parallel and is followed by 5V voltage, the collector series connection resistance of triode Q3
It is connect after R19, resistance R20 with switch S2, is connected to 5V voltage and resistance R6, resistance after switch S2 series resistor R7 and resistance R8
R6 is connected to light emitting diode D3 and light emitting diode D4, is connected to after the 7 series resistor R21 of foot of microprocessor chip U2
The base stage of triode Q4, the emitter-base bandgap grading of triode Q4 are connected to 5V voltage, collector series connection resistance R25, the resistance R26 of triode Q4
It is connected to the base stage of triode Q5 afterwards, the collector of triode Q5 is connected to resistance R23, and resistance R23 is parallel to thyristor K2's
Both ends.
The observation circuit of this ground fault earth leakage protective device operation troubles protects circuit, and circuit whole design is perfect, passes through
Halfwave rectifier is earth leakage protective chip U1 power supply, is microprocessor chip U2 power supply and pressure stabilizing by full-wave rectification, is based on shining
The red green light that diode D3 and light emitting diode D4 is issued, comes whether reaction monitoring component breaks down, effective solution
Prior art problem.
In summary: the observation circuit of this ground fault earth leakage protective device operation troubles protects circuit, circuit whole design
It is perfect, powered stable, by the monitoring component of setting come observation circuit, so that light letter can be issued in time when component failure
Number, to remind operator to handle in time, thus effective solution the problems of the prior art.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of observation circuit of ground fault earth leakage protective device operation troubles protects circuit, including pcb board (1), feature exists
In: the pcb board (1) is equipped with monitoring and protecting circuit (2), and monitoring and protecting circuit (2) is interior containing earth leakage protective chip U1 and micro-
Processor chips U2, foot 1, the foot 3 of the earth leakage protective chip U1 are connected to foot 1, the foot 2 of electric leakage magnet ring L1, and leak electricity magnetic
Ring L1 is set between firewire L and zero curve N, is connected to series resistance after the 4 serial capacitance C9 of foot of the earth leakage protective chip U1
The both ends of R30, zener diode Z1, series resistance R30 are connected to the foot 3 of rectifier diode ZL1, and zener diode Z1 is connected to
It is connect after capacitor C3, capacitor C7 and resistance R5 in parallel with the foot 4 of rectifier diode ZL1, the foot 5 of the earth leakage protective chip U1
It is connected to resistance R9, resistance R29 and capacitor C3, resistance R9 is connected to the base stage of triode Q1, and resistance R29 is connected to three poles
The collector of pipe Q6, capacitor C3 are connected on the circuit interface of switch S2, and the foot 6 of the earth leakage protective chip U1 is connected to
Concatenated thyristor K2 and thyristor K3 are connected to after 25V-26V voltage and resistance R3, resistance R3 series diode D2；It is described micro-
The base stage of triode Q2 is connected to after the 2 series resistor R12 of foot of processor chips U2, the emitter-base bandgap grading of triode Q2 is connected to 5V electricity
Pressure, is connected to thyristor K1 after the collector series connection resistance R14 and resistance R15 of triode Q2, after thyristor K1 series resistor R16
It is connected to and loads LD, the base stage of triode Q3, triode are connected to after the 6 series resistor R17 of foot of the microprocessor chip U2
The emitter-base bandgap grading of Q3 is connected to resistance R18 and capacitor C11 in parallel and is followed by 5V voltage, collector series connection resistance R19, the electricity of triode Q3
It is connect after resistance R20 with switch S2, the base stage of triode Q4 is connected to after the 7 series resistor R21 of foot of the microprocessor chip U2,
The emitter-base bandgap grading of triode Q4 is connected to 5V voltage, is connected to triode after collector series connection resistance R25, the resistance R26 of triode Q4
The base stage of Q5, the collector of triode Q5 are connected to resistance R23, and resistance R23 is parallel to the both ends of thyristor K2.
2. a kind of observation circuit of ground fault earth leakage protective device operation troubles according to claim 1 protects circuit,
Be characterized in that: the base stage of the triode Q6 is connected to concatenated resistance R27 and resistance R28, series resistance R27 and resistance R28
One end be connected to 5V voltage, connect after other end series diode D5 with concatenated thyristor K2, thyristor K3.
3. a kind of observation circuit of ground fault earth leakage protective device operation troubles according to claim 1 protects circuit,
It is characterized in that: being connected to 5V voltage after the collector series connection resistance R10 of the triode Q1.
4. a kind of observation circuit of ground fault earth leakage protective device operation troubles according to claim 1 protects circuit,
Be characterized in that: the thyristor K2 is connected to coil L3, is connected to firewire L after coil L3 concatenation fuse F1.
5. a kind of observation circuit of ground fault earth leakage protective device operation troubles according to claim 1 protects circuit,
It is characterized in that: being connected to 5V voltage and resistance R6 after the switch S2 series resistor R7 and resistance R8, resistance R6 is connected to
Light emitting diode D3 and light emitting diode D4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437601.1A CN110297151B (en) | 2019-05-24 | 2019-05-24 | Monitoring circuit protection circuit for operation fault of earth fault leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437601.1A CN110297151B (en) | 2019-05-24 | 2019-05-24 | Monitoring circuit protection circuit for operation fault of earth fault leakage protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110297151A true CN110297151A (en) | 2019-10-01 |
| CN110297151B CN110297151B (en) | 2022-04-08 |
Family
ID=68027161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910437601.1A Active CN110297151B (en) | 2019-05-24 | 2019-05-24 | Monitoring circuit protection circuit for operation fault of earth fault leakage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110297151B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601842A (en) * | 2004-09-30 | 2005-03-30 | 宁波习羽电子发展有限公司 | Arc and leakage protector |
| CN2909341Y (en) * | 2006-06-20 | 2007-06-06 | 陈景正 | Control circuit of earth leakage protective device with service life stop indication and trip |
| CN204464951U (en) * | 2015-04-16 | 2015-07-08 | 浙江中讯电子有限公司 | Leakage protection circuit, plug, socket and switch |
| CN104795789A (en) * | 2015-03-20 | 2015-07-22 | 张家港市佰瑞普电器科技有限公司 | Automatic monitoring circuit for earth fault leakage protector |
| CN204789793U (en) * | 2015-06-18 | 2015-11-18 | 中石化石油工程技术服务有限公司 | Earth -leakage protector's state verification ware under explosion -proof environment |
| CN107436391A (en) * | 2017-08-11 | 2017-12-05 | 国网黑龙江省电力有限公司牡丹江供电公司 | Ground fault detection device |
| CN107658845A (en) * | 2016-07-26 | 2018-02-02 | 江苏通领科技有限公司 | A kind of GFCI with leakage current test and Self-Test Diagnostics function |
| CN207037001U (en) * | 2017-08-11 | 2018-02-23 | 国网黑龙江省电力有限公司牡丹江供电公司 | Ground fault detection device |
-
2019
- 2019-05-24 CN CN201910437601.1A patent/CN110297151B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601842A (en) * | 2004-09-30 | 2005-03-30 | 宁波习羽电子发展有限公司 | Arc and leakage protector |
| CN2909341Y (en) * | 2006-06-20 | 2007-06-06 | 陈景正 | Control circuit of earth leakage protective device with service life stop indication and trip |
| CN104795789A (en) * | 2015-03-20 | 2015-07-22 | 张家港市佰瑞普电器科技有限公司 | Automatic monitoring circuit for earth fault leakage protector |
| CN204464951U (en) * | 2015-04-16 | 2015-07-08 | 浙江中讯电子有限公司 | Leakage protection circuit, plug, socket and switch |
| CN204789793U (en) * | 2015-06-18 | 2015-11-18 | 中石化石油工程技术服务有限公司 | Earth -leakage protector's state verification ware under explosion -proof environment |
| CN107658845A (en) * | 2016-07-26 | 2018-02-02 | 江苏通领科技有限公司 | A kind of GFCI with leakage current test and Self-Test Diagnostics function |
| CN107436391A (en) * | 2017-08-11 | 2017-12-05 | 国网黑龙江省电力有限公司牡丹江供电公司 | Ground fault detection device |
| CN207037001U (en) * | 2017-08-11 | 2018-02-23 | 国网黑龙江省电力有限公司牡丹江供电公司 | Ground fault detection device |
Non-Patent Citations (1)
| Title |
|---|
| 高赞: "一种选择性漏电保护器的研制", 《仪器仪表学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110297151B (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206321697U (en) | A kind of over-voltage detection circuit and switching power circuit | |
| CN206323126U (en) | A kind of AC overvoltage crowbars with runback bit function | |
| CN104577971B (en) | Power off trip protection plug | |
| CN209329672U (en) | A kind of current protecting circuit for high-pressure system | |
| CN110297151A (en) | A kind of observation circuit protection circuit of ground fault earth leakage protective device operation troubles | |
| CN203690888U (en) | Electric leakage protection plug | |
| CN203368004U (en) | Power supply protection circuit and switch power supply | |
| CN207853439U (en) | A kind of power protecting circuit suitable for water dispenser | |
| CN206117116U (en) | Over -voltage and under -voltage protection circuit | |
| CN110474294A (en) | A kind of Self-resetting Flameproof protection switch and guard method | |
| CN204349419U (en) | Power-off trip protection plug | |
| CN209313415U (en) | Overcurrent warning circuit, device and power-supply device | |
| CN107086558B (en) | A kind of electronic circuit of self-identifying zero curve | |
| CN209182386U (en) | The airborne device looses power offline inspection circuit of direct current | |
| CN208423789U (en) | A kind of high-voltage constant current source clamped protection realization circuit | |
| CN103207320B (en) | Capacitive detection circuit | |
| CN207868998U (en) | A kind of high power switching power supply for electrolysis water electrolytic cell | |
| CN208459524U (en) | A kind of three-phase motor break detection circuit | |
| CN2187348Y (en) | Protective module for electric machines | |
| CN205489449U (en) | Power supply circuit | |
| CN204314372U (en) | A kind of line voltage abnormal alarm system | |
| CN209562137U (en) | Direct current supply over-pressure safety device | |
| CN106771948A (en) | A kind of metal-oxide-semiconductor cut-in voltage measurement apparatus | |
| CN101330201B (en) | Apparatus for protecting power supply | |
| CN208461443U (en) | A kind of multi-functional dynamic phase sequence relay of three phase mains |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |