CN203850818U - A circuit constituting a wall switch with residual current protection - Google Patents
A circuit constituting a wall switch with residual current protection Download PDFInfo
- Publication number
- CN203850818U CN203850818U CN201420126963.1U CN201420126963U CN203850818U CN 203850818 U CN203850818 U CN 203850818U CN 201420126963 U CN201420126963 U CN 201420126963U CN 203850818 U CN203850818 U CN 203850818U
- Authority
- CN
- China
- Prior art keywords
- power line
- residual current
- zero sequence
- wall switch
- current protection
- 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.)
- Expired - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract description 5
- 229910052710 silicon Inorganic materials 0.000 abstract description 5
- 239000010703 silicon Substances 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- 235000008694 Humulus lupulus Nutrition 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Abstract
A circuit constituting a wall switch with residual current protection is composed of a power line L, a power line N, a zero sequence current transformer, a C3, an R1, a unidirectional silicon controlled rectifier VT1, an electrical apparatus release K1, a C6, an R5, an R3, an R2, a C7 and a TEST. The power line L and the power line N go by the zero sequence current transformer. A zero sequence induction voltage goes through the C3 and the R1 to be input to a first pin of an RV4145. An output terminal of the RV4145 is connected with a control electrode of the silicon controlled rectifier VT1. When an amplified voltage is greater than a comparator reference voltage in the RV4145, a level at an output terminal fifth pin of the RV4145 hops to be a high level; the silicon controlled rectifier VT1 is in conduction; the voltages at the two ends of the C6 are grounded via the R5 and the VT1 and rapidly decrease to be zero; a solenoid loses electricity; an iron core of the electrical apparatus release K1 is released; and a contact is separated from an output terminal. The advantages of the circuit constituting the wall switch with residual current protection are that the usage life of the wall switch is prolonged due to residual current protection.
Description
Technical field
The utility model relates to switch on wall, is specifically related to a kind of the electric circuit constitute of switch on wall of residual current protecting.
Background technology
Wall Ka Guan a kind ofly need to control different household electrical appliances and illumination by difference, runs into powering-off state, switch Close All.When from new incoming call, switch, in closed condition, can not cause personal injury because of unknown on off state.
Utility model content
The purpose of this utility model is to provide a kind of the electric circuit constitute of switch on wall of residual current protecting, and protection residual current makes the ILS of switch on wall.
The technical scheme that the utility model relates to:
A electric circuit constitute for the switch on wall of residual current protecting, is comprised of power line L, power line N, zero sequence current mutual inductor, C3, R1, one-way SCR VT1, release K1, C6, R5, R3, R2, C7 and TEST.
Described power line L and power line N are by zero sequence current mutual inductor, and zero sequence induced voltage is input to RV4145 the 1st pin through C3, R1.Described C3 connects with R1, the two ends of C7 and R2 parallel connection and RV4145.
The output of described RV4145 is connected with the control utmost point of one-way SCR VT1.
Described R2 is the negative feedback resistor of inner operational amplifier, and C7 negative feedback capacitor is eliminated high frequency spike and disturbed the impact on circuit.
When the voltage after amplifying is greater than the comparator reference voltage of RV4145 inside, the output 5 pin saltus steps of RV4145 are high level, controllable silicon VT1 conducting, C6 both end voltage is through R5, VT1 earthing, reduce to rapidly zero, solenoid dead electricity, release K1 iron core discharges, contact is separated with output, cuts off the electricity supply.
The utility model has the advantages that: protection residual current makes the ILS of switch on wall.
Accompanying drawing explanation
Fig. 1 is the electric circuit constitute schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A electric circuit constitute for the switch on wall of residual current protecting, is comprised of power line L, power line N, zero sequence current mutual inductor, C3, R1, one-way SCR VT1, release K1, C6, R5, R3, R2, C7 and TEST.
Described power line L and power line N are by zero sequence current mutual inductor, and zero sequence induced voltage is input to RV4145 the 1st pin through C3, R1.Described C3 connects with R1, the two ends of C7 and R2 parallel connection and RV4145.
The output of described RV4145 is connected with the control utmost point of one-way SCR VT1.
Described R2 is the negative feedback resistor of inner operational amplifier, determines the gain (amplification quantity) of amplifier, selects different resistances can set operating current.R resistance is larger, and amplification quantity is large, highly sensitive, and operating current is little.C negative feedback capacitor is eliminated high frequency spike and is disturbed the impact on circuit.
When the voltage after amplifying is greater than the comparator reference voltage of RV4145 inside, the output 5 pin saltus steps of RV4145 are high level, controllable silicon VT1 conducting, C6 both end voltage is through R5, VT1 earthing, reduce to rapidly zero, solenoid dead electricity, release K1 iron core discharges, contact is separated with output, cuts off the electricity supply.
Claims (1)
1. the electric circuit constitute of the switch on wall of a residual current protecting, by power line L, power line N, zero sequence current mutual inductor, C3, R1, one-way SCR VT1, RV4145, release K1, C6, R5, R3, R2, C7 and TEST, formed, it is characterized in that: described power line L and power line N pass through zero sequence current mutual inductor, zero sequence induced voltage is input to RV4145 the 1st pin through C3, R1, described C3 connects with R1, the two ends of C7 and R2 parallel connection and RV4145; The output of described RV4145 is connected with the control utmost point of one-way SCR VT1, and described R2 is the negative feedback resistor of inner operational amplifier, and C7 negative feedback capacitor is eliminated high frequency spike and disturbed the impact on circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126963.1U CN203850818U (en) | 2014-03-13 | 2014-03-13 | A circuit constituting a wall switch with residual current protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126963.1U CN203850818U (en) | 2014-03-13 | 2014-03-13 | A circuit constituting a wall switch with residual current protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203850818U true CN203850818U (en) | 2014-09-24 |
Family
ID=51563790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420126963.1U Expired - Fee Related CN203850818U (en) | 2014-03-13 | 2014-03-13 | A circuit constituting a wall switch with residual current protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203850818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914712A (en) * | 2015-02-20 | 2016-08-31 | 依必安派特穆尔芬根有限两合公司 | Device and method for detecting residual curent |
-
2014
- 2014-03-13 CN CN201420126963.1U patent/CN203850818U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914712A (en) * | 2015-02-20 | 2016-08-31 | 依必安派特穆尔芬根有限两合公司 | Device and method for detecting residual curent |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20150313 |
|
| EXPY | Termination of patent right or utility model |