CN2727749Y - Universal capacity-resistance device stepdown ground wire electrified detecting device for electrical appliance - Google Patents
Universal capacity-resistance device stepdown ground wire electrified detecting device for electrical appliance Download PDFInfo
- Publication number
- CN2727749Y CN2727749Y CN 200420003702 CN200420003702U CN2727749Y CN 2727749 Y CN2727749 Y CN 2727749Y CN 200420003702 CN200420003702 CN 200420003702 CN 200420003702 U CN200420003702 U CN 200420003702U CN 2727749 Y CN2727749 Y CN 2727749Y
- Authority
- CN
- China
- Prior art keywords
- ground wire
- resistance device
- utility
- model
- wire
- 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
Images
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a universal ground wire electrified detection device for an electrical appliances for the voltage reduction of a capacity-resistance device, which belongs to the field of the application of electronic technology, particularly the electric potential difference detecting technology between a zero wire and a ground wire. The utility model is mainly characterized in that a capacity-resistance device is connected to a loop of the zero wire, two input terminals of a bridge rectifying circuit of a diode, and a ground wire Ein in series, and the utility model is formed from the step-by-step connection of the capacity-resistance device, a rectifying diode, a voltage-stabilizing tube, a voltage-stabilizing capacitor and a switching tube. The switching tube is connected with a control circuit of an electrical appliance and outputs a ground wire electrified signal the control circuit of the electrical appliance. The utility model provides a signal for the simultaneous failture of the ground wire and a basic insulation or the case that the ground wire is electrified of domestic electric appliances having similar purposes without the ground wire electrified detection device to be used as a signal source for various control modes and the control circuits of different electric appliances. The utility model can also be extensively used in the control circuits of domestic and other electric appliances having similar purposes without the functions that the ground wire and the basic insulation are failed simultaneously or the ground wire, and the live wire can be cut off at a real time when ground wire is electrified.
Description
Technical field the invention belongs to the application of electronic technology field, particularly the detection technique of potential difference (PD) between Zero-liue.
Background technology is well-known, and the ground connection that family expenses and similar applications electrical equipment produce in the device standard-required user family must be reliably, and the standard plug that the band ground wire also is housed in its product is for linking to each other good with assurance ground connection with ground wire in the socket.And poor in China and some regional power utilization environments of the world, the ground connection of many buildings is insecure, or even lack.In this case, qualified family expenses and the similar applications electrical equipment safety that can not guarantee the user.The invention provides ground wire and basic insulation to lose efficacy simultaneously or the ground wire electrification signal for family expenses and the similar applications electrical equipment that does not have the ground wire electrification signal supervisory instrument, makes signal source for the control circuit of various control modes and different electrical appliances.Before the invention applying date, family expenses and similar applications electrical equipment do not have above-mentioned signal source.Described family expenses of the invention and similar applications electrical equipment; be meant that especially needing 18 kinds of CCC authentication family expenses and similar applications electrical equipment is household electric refrigerator and food freezer; electric fan; air conditioner; motor-compressor; domestic electric washer; electric heater; household heater; Hoover; skin and hair-care utensil; electric iron; electromagnetic stove; electric oven; electric food processing apparatus; micro-wave oven; electric stove; baking oven and similar appliances; range hood; liquid heater and cold and hot water drinking machine and electric cooker etc. do not have ground connection and basic insulation and lost efficacy simultaneously; the electrical equipment that has anti-electric wall personal safety defencive function during ground wire electrification; and above-mentioned electrical equipment does not have above-mentioned functions before the invention applying date, is restricted for the range of application of family expenses and similar applications electrical equipment.Need at great majority that ground wire and basic insulation lost efficacy simultaneously, the occasion of personnel protection is provided during ground wire electrification, must add control.
The purpose of summary of the invention the invention provides the electric appliance general earth wire charged testing device of a kind of capacitance-resistance device step-down.
The invention solves the technical scheme that its technical matters adopts: the capacitance-resistance device is serially connected with zero line, two input ends of diode bridge rectifier circuit and ground wire E
InIn the loop, and connected to form step by step by capacitance-resistance device, commutation diode, electric capacity of voltage regulation, stabilivolt and switching tube, switching tube links to each other with electrical apparatus control circuit, to electrical apparatus control circuit output ground wire electrification signal.Described capacitance-resistance device is that parallel way connects, with zero line N or ground wire E
InDiode bridge rectifier circuit input end serial connection.
The beneficial effect of the invention is: simple in structure, highly versatile, the various control circuits of suitable all kinds of family expenses and similar applications electrical equipment.
Appended drawings is the electrical schematic diagram of the invention.N is a zero line among the figure, E
INBe ground wire end of incoming cables, R
1C
1Be capacitance-resistance device, D
1～D
4Be commutation diode, DW is a stabilivolt, C
oBe electric capacity of voltage regulation, Q
oBe switching tube.
Embodiment capacitance-resistance device R
1C
1Be serially connected with zero line N, diode bridge rectifier circuit D with parallel way
1～D
4Two input end A, B, ground wire E
INIn the loop, and by capacitance-resistance device R
1C
1, commutation diode D
1～D
4Electric capacity of voltage regulation C
o, stabilivolt DW and switching tube Q
oConnect to form step by step.Switching tube Q
oCollector link to each other with electrical apparatus control circuit, to electrical equipment control electrical equipment output ground wire electrification signal.
Principle of work summary family expenses and similar applications electrical equipment ground connection and basic insulation lost efficacy simultaneously or the situation of ground wire electrification under, zero line N and ground wire E
INBetween voltage between 36V-220V, cross-over connection is in ground wire E
INProduce the 1.5-6V DC voltage with the capacitance-resistance device reduction voltage circuit on the zero line N by rectification circuit, make the switching tube conducting, to family expenses that are attached thereto and similar applications electrical apparatus control circuit output low level signal.
Claims (2)
1, the electric appliance general earth wire charged testing device of a kind of capacitance-resistance device step-down, its principal character are that the capacitance-resistance device is serially connected with zero line, two input ends of diode bridge rectifier circuit and ground wire E
INIn the loop, and connected to form step by step by capacitance-resistance device, commutation diode, electric capacity of voltage regulation, stabilivolt and switching tube, switching tube links to each other with electrical apparatus control circuit, to electrical apparatus control circuit output ground wire electrification signal.
2, the electric appliance general earth wire charged testing device of capacitance-resistance device according to claim 1 step-down is characterized in that described capacitance-resistance device is that parallel way connects, with zero line N or ground wire E
INDiode bridge rectifier circuit input end serial connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003702 CN2727749Y (en) | 2004-01-29 | 2004-01-29 | Universal capacity-resistance device stepdown ground wire electrified detecting device for electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003702 CN2727749Y (en) | 2004-01-29 | 2004-01-29 | Universal capacity-resistance device stepdown ground wire electrified detecting device for electrical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2727749Y true CN2727749Y (en) | 2005-09-21 |
Family
ID=35043762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420003702 Expired - Fee Related CN2727749Y (en) | 2004-01-29 | 2004-01-29 | Universal capacity-resistance device stepdown ground wire electrified detecting device for electrical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2727749Y (en) |
-
2004
- 2004-01-29 CN CN 200420003702 patent/CN2727749Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106841762A (en) | Zero cross detection circuit and home appliance | |
| CN204190353U (en) | A kind of household electrical appliance automatic overvoltage power off device | |
| CN103973134B (en) | Continuous-current plant and improve the pwm pulse control method of its power factor | |
| CN105591534A (en) | Single-phase rectification wide region power supply power-on circuit | |
| CN101980405B (en) | Multi-purpose time delay power supply socket manufactured by using time base circuit | |
| CN204559951U (en) | A kind of intelligent illuminating system | |
| CN204559952U (en) | A kind of for the intelligent switch controller in intelligent illuminating system | |
| CN2727749Y (en) | Universal capacity-resistance device stepdown ground wire electrified detecting device for electrical appliance | |
| WO2017113943A1 (en) | Standby power circuit realizing a power consumption of less than 0.1uw | |
| CN203135735U (en) | Continuous current plant | |
| CN2711739Y (en) | Electrified ground wire detector universal used for electric appliances stepped dow by transformer | |
| CN103151833B (en) | A kind of electricity anti-theft method and anti-electricity-theft device | |
| CN1558245A (en) | Resistance-capacitance step down earth wire electrification detecting device universal for electric appliances | |
| CN203119623U (en) | Electricity larceny prevention device | |
| CN1558246A (en) | Transformer step down universal earth wire electrification detecting device for electric appliances | |
| CN105606886A (en) | Collection device of electricity consumption information and multiple-electrical-appliance separation recognition method | |
| CN107888032B (en) | A kind of single-phase double speed twin voltage asynchronous motor | |
| CN207339810U (en) | A kind of power supply delay control circuit | |
| CN107425516B (en) | Energy-saving direct-current power distribution network system | |
| CN203968085U (en) | A kind of intelligent keyboard switch and use the range hood of this keyboard switch | |
| CN205041308U (en) | Automatic hand drier of infrared ray | |
| CN206180884U (en) | A circuit for brownout power | |
| CN205041309U (en) | Light -operated dry hand device of infrared ray | |
| CN2711940Y (en) | Monolithic processor controlled electric shock proof wall plug universal used for domestic electric appliances | |
| CN210450043U (en) | Electric control device for high-power steam cleaning machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |