CN103997030A - Anti-creeping device preventing electric shock - Google Patents
Anti-creeping device preventing electric shock Download PDFInfo
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- CN103997030A CN103997030A CN201410258565.XA CN201410258565A CN103997030A CN 103997030 A CN103997030 A CN 103997030A CN 201410258565 A CN201410258565 A CN 201410258565A CN 103997030 A CN103997030 A CN 103997030A
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Abstract
The invention relates to an anti-creeping device preventing the electric shock and belongs to the field of emergency protection circuit devices. A circuit board is wrapped with a metal current-conducting board. One input end L1 of an alternating-current power source is connected with an anode of a diode D2. A cathode of the diode D2 is connected with one end of a resistor R3, and the other end of the resistor R3 is connected with one end of a capacitor C4, one end of a resistor R4 and the inverted input end of the operational amplifier OP. A positive power source of the operational amplifier OP is connected with the output end of a bridge rectifier circuit. A resistor R6 is connected with an emitter electrode of an audion A1. A resistor R7 is connected between the output end of the operational amplifier OP and a base electrode of the audion A1. A collector of the audion A1 is connected with a cathode of the diode D3. An anode of the diode D3 is grounded. A relay coil ZJ is connected with the diode D3 in parallel. A first normally-open contact J12 of a relay ZJ is connected with a first normally-closed contact J11 in series. A second normally-open contact J21 of the relay ZJ is connected with a second normally-closed contact J22 in series. The other end of the normally-closed contact J11 and the other end of the normally-open contact J21 are connected with the input end L1, and the other input end L2 is connected with the other end of the normally-open contact J12 and the other end of the normally-closed contact J22.
Description
Technical field
The present invention relates to emergency protection circuit device for electric field, at length say it is a kind of anticreep, anti-electric shock apparatus.
Background technology
As everyone knows, when some electric device moves in wet environment as street lamp, pump house, home electric etc., because electric wire leaks electricity, electric shock accidents happens occasionally.For protection against electric shock is generally used earth leakage circuit-breaker, but its first reaction of earth leakage circuit-breaker is to cut off the electricity supply, and load cannot normally be worked, and is secondly to search electric leakage position, fixes a breakdown a little.Now, load still cannot be worked.Although some electric device has ground protection line, it can only be protected and be connected to the electric of ground protection line, when electric being flooded, can not stop leakage current to flow in water, and therefore electric shock accidents often occurs.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of anticreep, anti-electric shock apparatus, can absorb leakage current, protection against electric shock, and load and can also normally work when electricity piece is flooded.
The technical solution adopted for the present invention to solve the technical problems is: a kind of anticreep, anti-electric shock apparatus, on circuit board, be welded with switching circuit and bridge rectifier, it is characterized in that, circuit board is wrapped with metal guide electroplax, metallic conduction plate earthing, two input L1 of circuit board, L2 connects two inputs of AC power, an input L1 of AC power connects the positive pole of diode D2, diode D2 negative pole connecting resistance R3 one end, resistance R 3 another termination capacitor C 4, the inverting input of resistance R 4 one end and operational amplifier OP, the in-phase input end connecting resistance R5 of operational amplifier OP, resistance R 6 one end, resistance R 4, resistance R 5, the negative power end ground connection of capacitor C 4 other ends and operational amplifier OP, the positive supply of operational amplifier OP connects the output of bridge rectifier, resistance R 6 connects the emitter of triode A1, between operational amplifier OP output and triode A1 base stage, be connected with resistance R 7, the collector electrode of triode A1 connects the negative pole of diode D3, the plus earth of diode D3, relay coil ZJ is in parallel with diode D3, first group of normally opened contact J12 of relay ZJ connects with first group of normally-closed contact J11, second group of normally opened contact J21 of relay ZJ connects with second group of normally-closed contact J22, another termination input of normally-closed contact J11 and normally opened contact J21 L1, another input L2 connects normally opened contact J12 and the normally-closed contact J22 other end, between normally opened contact J12 and normally-closed contact J11, meet output L1L, between normally opened contact J21 and normally-closed contact J22, meet output L2L.
The invention has the beneficial effects as follows, can absorb leakage current, protection against electric shock, and load and can also normally work when electricity piece is flooded.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is circuit theory diagrams of the present invention.
1. metal guide electroplaxs in figure, 2. circuit board, L1. input, L2. input, L1L. output, L2L. output, R1, R2, R3, R4, R5, R6. resistance, C1, C3. electrochemical capacitor, C2, C4. electric capacity, D1, D2, D3. diode, OP. operational amplifier, U1. rectifier bridge, T1. transformer, ZJ. the device device coil that continues, J11. normally-closed contact, J12. normally opened contact, J21. normally opened contact, J22. normally-closed contact, A1. triode.
Embodiment
In Fig. 1, Fig. 2, Fig. 3, bridge rectifier of the present invention is comprised of resistance R 1, resistance R 2, rectifier bridge U, transformer T1, electrochemical capacitor C1, electrochemical capacitor C3, capacitor C 2, diode D1, and the annexation between each components and parts is known technology.Circuit board 2 is wrapped with metal guide electroplax 1, metal guide electroplax 1 ground connection, two input L1 of circuit board 2, L2 connects two inputs of AC power, an input L1 of AC power connects the positive pole of diode D2, diode D2 negative pole connecting resistance R3 one end, resistance R 3 another termination capacitor C 4, the inverting input of resistance R 4 one end and operational amplifier OP, the in-phase input end connecting resistance R5 of operational amplifier OP, resistance R 6 one end, resistance R 4, resistance R 5, the negative power end ground connection of capacitor C 4 other ends and operational amplifier OP, the positive supply of operational amplifier OP meets the output VCC of bridge rectifier, resistance R 6 connects the emitter of triode A1, between operational amplifier OP output and triode A1 base stage, be connected with resistance R 7, the collector electrode of triode A1 connects the negative pole of diode D3, the plus earth of diode D3, relay coil ZJ is in parallel with diode D3, first group of normally opened contact J12 of relay ZJ connects with first group of normally-closed contact J11, second group of normally opened contact J21 of relay ZJ connects with second group of normally-closed contact J22, another termination input of normally-closed contact J11 and normally opened contact J21 L1, another input L2 connects normally opened contact J12 and the normally-closed contact J22 other end, between normally opened contact J12 and normally-closed contact J11, meet output L1L, between normally opened contact J21 and normally-closed contact J22, meet output L2L, output L1L and output L2L connect load, on circuit board of the present invention, can also be provided with earth connection G and earth connection FN on 2.
The present invention is when the voltage of input L1 is during higher than earth terminal G voltage, electric current through rectification diode D2 halfwave rectifier by divider resistance R3 step-down, by shunt resistance R4 shunting one part of current, through C4 filtering, trigger operational amplifier OP again, triggering required DC power supply is provided by the output VCC of bridge rectifier, now the output current of operational amplifier OP triggers PNP triode A1 through current-limiting resistance R7, simultaneously, operational amplifier OP RoC phase input electric current branches to earth terminal G through shunt resistance R5, and be diverted to PNP triode A1 collector electrode through current-limiting resistance R6, the electric current of triode A1 collector electrode is because of the single effect of switch diode D3, can only pass through relay coil ZJ.Diode D2, resistance R 3, resistance R 4, capacitor C 4, resistance R 5, resistance R 6 and operational amplifier OP form voltage comparison loop, and resistance R 7, positive-negative-positive triode A1, diode D3 form relay coil loop.Now, input L2 is connected with output L1L, and input L1 is connected with output L2L.When the voltage of input L1 terminal is during lower than earth terminal G voltage, because of the principle of diode D2 unilateal conduction, the input of the inverting input no-voltage of operational amplifier OP, relay coil ZJ is not charged.Now, input L1 is connected with output L1L, and input L2 is connected with output L2L.
Under peacetime state, metal guide electroplax 1 does not form loop with phase voltage input L1, but the output L1L being connected with neutral terminal L2 forms loop.When input L1, input L2 are flooded, the electric current being flowed out by the connected terminal place of phase voltage input L1 flows on output L1L terminal metal guide electroplax 1 around by water, is finally back in input L1L terminal.In water the free magnitude of current seldom, the almost existence of imperceptible electric current when human body touches water.And now the water between metal guide electroplax 1 and output is because there being resistance, load forms shunt circuit with water, so load can also obtain normal supply voltage.
Claims (1)
- One kind anticreep, anti-electric shock apparatus, on circuit board, be welded with switching circuit and bridge rectifier, it is characterized in that: circuit board is wrapped with metal guide electroplax, metallic conduction plate earthing, two input L1 of circuit board, L2 connects two inputs of AC power, an input L1 of AC power connects the positive pole of diode D2, diode D2 negative pole connecting resistance R3 one end, resistance R 3 another termination capacitor C 4, the inverting input of resistance R 4 one end and operational amplifier OP, the in-phase input end connecting resistance R5 of operational amplifier OP, resistance R 6 one end, resistance R 4, resistance R 5, the negative power end ground connection of capacitor C 4 other ends and operational amplifier OP, the positive supply of operational amplifier OP connects the output of bridge rectifier, resistance R 6 connects the emitter of triode A1, between operational amplifier OP output and triode A1 base stage, be connected with resistance R 7, the collector electrode of triode A1 connects the negative pole of diode D3, the plus earth of diode D3, relay coil ZJ is in parallel with diode D3, first group of normally opened contact J12 of relay ZJ connects with first group of normally-closed contact J11, second group of normally opened contact J21 of relay ZJ connects with second group of normally-closed contact J22, another termination input of normally-closed contact J11 and normally opened contact J21 L1, another input L2 connects normally opened contact J12 and the normally-closed contact J22 other end, between normally opened contact J12 and normally-closed contact J11, meet output L1L, between normally opened contact J21 and normally-closed contact J22, meet output L2L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258565.XA CN103997030A (en) | 2014-06-12 | 2014-06-12 | Anti-creeping device preventing electric shock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258565.XA CN103997030A (en) | 2014-06-12 | 2014-06-12 | Anti-creeping device preventing electric shock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103997030A true CN103997030A (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410258565.XA Pending CN103997030A (en) | 2014-06-12 | 2014-06-12 | Anti-creeping device preventing electric shock |
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| CN (1) | CN103997030A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62264303A (en) * | 1986-04-07 | 1987-11-17 | Canon Inc | Safety device |
| CN1800041A (en) * | 2005-01-18 | 2006-07-12 | 程运富 | Electrolystic sterilization apparatus for oil field affusion |
| CN201715759U (en) * | 2010-07-09 | 2011-01-19 | 赵瑞林 | Automatic attemperator for water supply and sewerage pipelines of solar water heater |
| CN103528196A (en) * | 2013-10-24 | 2014-01-22 | 陈非 | Electric shock protection structure of electric water heater |
| CN203911472U (en) * | 2014-06-12 | 2014-10-29 | 李永睦 | Electric leakage and shock preventive device |
-
2014
- 2014-06-12 CN CN201410258565.XA patent/CN103997030A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62264303A (en) * | 1986-04-07 | 1987-11-17 | Canon Inc | Safety device |
| CN1800041A (en) * | 2005-01-18 | 2006-07-12 | 程运富 | Electrolystic sterilization apparatus for oil field affusion |
| CN201715759U (en) * | 2010-07-09 | 2011-01-19 | 赵瑞林 | Automatic attemperator for water supply and sewerage pipelines of solar water heater |
| CN103528196A (en) * | 2013-10-24 | 2014-01-22 | 陈非 | Electric shock protection structure of electric water heater |
| CN203911472U (en) * | 2014-06-12 | 2014-10-29 | 李永睦 | Electric leakage and shock preventive device |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140820 |