CN201029002Y - Creepage warning device of electric apparatus outer shell - Google Patents
Creepage warning device of electric apparatus outer shell Download PDFInfo
- Publication number
- CN201029002Y CN201029002Y CNU2007200498648U CN200720049864U CN201029002Y CN 201029002 Y CN201029002 Y CN 201029002Y CN U2007200498648 U CNU2007200498648 U CN U2007200498648U CN 200720049864 U CN200720049864 U CN 200720049864U CN 201029002 Y CN201029002 Y CN 201029002Y
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- circuit
- electric leakage
- alarm device
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- electrical equipment
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Abstract
The utility model discloses an electric leakage alarm device for the outer shell of electrical appliances and consists of a voltage reducing circuit, a rectification circuit, a voltage regulating circuit, a filter circuit, an astable multivibrator circuit and an alarm circuit. The utility model is characterized in that: the output end of the voltage reducing circuit is connected with the input end of the rectification circuit, and the output end of the rectification circuit is connected with the input end of the voltage regulating circuit. The output end of the voltage regulating circuit is connected with the input end of the astable multivibrator circuit, and the output end of the astable multivibrator circuit is connected with the input end of the alarm circuit. Compared with the prior art, the utility model has the advantages of simple structure, convenient use, long service life, light and sound alarm, and the utility model can avoid electrical shocks and electrical fire accidents due to the electric leakage of the shell of electrical appliances to the maximum extent.
Description
Technical field
The utility model relates to a kind of electric leakage alarm device of electrical equipment shell.
Background technology
Along with rapid development of economy, electric utility is more and more prosperous, and power circuit is in continuous growth, and electric energy metering box enters into each corner of society.And spread all over the electric energy metering box in town and country, because multi-point and wide-ranging, the management maintenance difficulty is big, along with the influence of working time, climatic conditions change and environment of living in, external force, the safety case of electric energy metering box is also changed at any time, safe poor controllability.Add the imbalance in electric power development zone, reason such as the protecting electrical power system mode is perfect not enough, the accident of human electric shock and the electrical fire that cause because of the body leakage of table case happen occasionally.The electric leakage alarm device of existing electrical equipment shell.
Summary of the invention
The purpose of this utility model is that prior art is improved, a kind of electric leakage alarm device of electrical equipment shell is provided, simple in structure, easy to use, life-span is long, do not need repair and maintenance, energy consumption is little, and has acousto-optic hint, accident of human electric shock and the electrical fire accident that can avoid all electric equipments to cause to greatest extent owing to body leakage, the technical scheme of employing is as follows:
The electric leakage alarm device of electrical equipment shell of the present utility model, comprise reduction voltage circuit, rectification circuit, mu balanced circuit, filtering circuit, stable multi-oscillation circuit and warning circuit, it is characterized in that: the output terminal of described reduction voltage circuit connects the input end of rectification circuit, the output terminal of rectification circuit connects the input end of mu balanced circuit, the output terminal of mu balanced circuit connects the input end of stable multi-oscillation circuit, and the output terminal of stable multi-oscillation circuit connects the input end of warning circuit.The alternating current of electric leakage power supply is also adopted pressure through the reduction voltage circuit step-down, passes through the rectification circuit rectification again, after the mu balanced circuit voltage stabilizing, is converted to direct current, provides stable low-voltage to the stable multi-oscillation circuit, and stable multi-oscillation circuit control warning circuit is reported to the police.
Described reduction voltage circuit is a decompression capacitor.
Described rectification circuit is a full bridge rectifier.
Described mu balanced circuit is a voltage stabilizing diode.
Described filtering circuit is a filter capacitor.
Described warning circuit comprises at least one light emitting diode.
Described warning circuit comprises loudspeaker.
Described warning circuit also can adopt the sound circuit that can send voice.
The utility model beneficial effect against existing technologies is, simple in structure, easy to use, life-span is long, do not need repair and maintenance, energy consumption is little, and has acousto-optic hint, can avoid all electric equipments owing to accident of human electric shock and electrical fire accident that body leakage causes to greatest extent, can be used on the equipment and household electrical appliance of industries such as electric power, colliery, chemical industry, building.
Description of drawings
Accompanying drawing is the circuit theory synoptic diagram of the utility model preferred embodiment.
Embodiment
As shown in drawings, the electric leakage alarm device of the electrical equipment shell in this preferred embodiment comprises reduction voltage circuit, rectification circuit, mu balanced circuit, stable multi-oscillation circuit and warning circuit.
The output terminal of described reduction voltage circuit connects the input end of rectification circuit, the output terminal of rectification circuit connects the input end of mu balanced circuit, the output terminal of mu balanced circuit connects the input end of stable multi-oscillation circuit, and the output terminal of stable multi-oscillation circuit connects the input end of warning circuit.The alternating current of electric leakage power supply is also adopted pressure through the reduction voltage circuit step-down, passes through the rectification circuit rectification again, after the mu balanced circuit voltage stabilizing, is converted to direct current, provides stable low-voltage to the stable multi-oscillation circuit, and stable multi-oscillation circuit control warning circuit is reported to the police.
Described stable multi-oscillation circuit is an integrated circuit (IC) 1, and IC1 adopts the NE555 integrated circuit in the present embodiment.
Described reduction voltage circuit is decompression capacitor C1.
Described rectification circuit is full bridge rectifier DL.
Described mu balanced circuit is voltage stabilizing diode D5.
Described filtering circuit is filter capacitor C2, plays filtering.
Described warning circuit comprises two light emitting diode D6, D7 and loudspeaker HA.
R1, R2, R3 play current limliting, and C3, C4 play voltage stabilizing.
When using, with the shell of the electric leakage alarm device one end connecting circuit of electrical equipment shell, the other end connects zero line.When the electrical leakage voltage of electric appliance casing surpassed certain voltage, light emitting diode D6, D7 were luminous, and loudspeaker HA sounds, and is convenient to the user and in time understands, and take measures.
The above is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be all equivalents of being done according to claim scope of the present utility model, be the utility model claim scope and cover.
Claims (8)
1. the electric leakage alarm device of an electrical equipment shell, comprise reduction voltage circuit, rectification circuit, mu balanced circuit, filtering circuit, stable multi-oscillation circuit and warning circuit, it is characterized in that: the output terminal of described reduction voltage circuit connects the input end of rectification circuit, the output terminal of rectification circuit connects the input end of mu balanced circuit, the output terminal of mu balanced circuit connects the input end of stable multi-oscillation circuit, and the output terminal of stable multi-oscillation circuit connects the input end of warning circuit.
2. the electric leakage alarm device of electrical equipment shell as claimed in claim 1, it is characterized in that: described reduction voltage circuit is a decompression capacitor.
3. the electric leakage alarm device of electrical equipment shell as claimed in claim 2, it is characterized in that: described rectification circuit is a full bridge rectifier.
4. the electric leakage alarm device of electrical equipment shell as claimed in claim 3, it is characterized in that: described mu balanced circuit is a voltage stabilizing diode.
5. the electric leakage alarm device of electrical equipment shell as claimed in claim 4, it is characterized in that: described filtering circuit is a filter capacitor.
6. the electric leakage alarm device of electrical equipment shell as claimed in claim 5, it is characterized in that: described warning circuit comprises at least one light emitting diode.
7. the electric leakage alarm device of electrical equipment shell as claimed in claim 6, it is characterized in that: described warning circuit is a loudspeaker.
8. the electric leakage alarm device of electrical equipment shell as claimed in claim 6, it is characterized in that: described warning circuit is a sound circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200498648U CN201029002Y (en) | 2007-04-02 | 2007-04-02 | Creepage warning device of electric apparatus outer shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200498648U CN201029002Y (en) | 2007-04-02 | 2007-04-02 | Creepage warning device of electric apparatus outer shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201029002Y true CN201029002Y (en) | 2008-02-27 |
Family
ID=39133218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200498648U Expired - Fee Related CN201029002Y (en) | 2007-04-02 | 2007-04-02 | Creepage warning device of electric apparatus outer shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201029002Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103176093A (en) * | 2011-12-23 | 2013-06-26 | 海洋王照明科技股份有限公司 | Leakage detection circuit |
| CN104515296A (en) * | 2014-11-27 | 2015-04-15 | 国家电网公司 | Electric heater having electric leakage detection function |
| CN104515930A (en) * | 2014-11-27 | 2015-04-15 | 国家电网公司 | Leak current detection alarm circuit |
-
2007
- 2007-04-02 CN CNU2007200498648U patent/CN201029002Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103176093A (en) * | 2011-12-23 | 2013-06-26 | 海洋王照明科技股份有限公司 | Leakage detection circuit |
| CN104515296A (en) * | 2014-11-27 | 2015-04-15 | 国家电网公司 | Electric heater having electric leakage detection function |
| CN104515930A (en) * | 2014-11-27 | 2015-04-15 | 国家电网公司 | Leak current detection alarm circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20100402 |