CN209562152U - Electromagnet anti-error closing debounce circuit - Google Patents

Abstract

The utility model relates to a kind of electromagnet anti-error closing debounce circuits, it includes rectifier bridge, reduction voltage circuit, π shape filter circuit, moss, control circuit and electromagnet, the output end of the rectifier bridge and the input terminal of reduction voltage circuit couple, the output end of the reduction voltage circuit and the input terminal of π shape filter circuit couple, one end of electromagnet and the output end of rectifier bridge couple, the drain electrode of the other end and moss couples, the source electrode of moss is grounded setting, the control circuit is connected with the output end of π shape filter circuit, control circuit includes the 4th comparator, 4th capacitor and the tenth resistance, the grid of the output end moss of 4th comparator couples, its positive input coupled in series has the 8th resistance, its negative input and the tenth resistance coupled in series.The utility model has the effect of to work under bounce state in the working condition lower electromagnet of spread of voltage.

Description

Electromagnet anti-error closing debounce circuit

Technical field

The utility model relates to the technical fields of sub-switch circuit, beat more particularly, to a kind of electromagnet anti-error closing electric Road.

Background technique

Combined floodgate refers to be operated through people in the power system, and breaker switchs to closed position by open position.It is existing In the modular design of 0.4kV power supply line, You Liangtai transformer is individually I sections of buses and II sections of bussed supplies, I sections of buses and II sections of buses are then that the load supplyings such as normal productive power, fire-fighting, electric consumption on lighting are also added into generator in some designs. Between I sections of buses and corresponding transformer, between II sections of buses and corresponding transformer, between I sections of buses and II sections of buses, hair Breaker is provided between motor and corresponding bus.When two transformers are normally two sections of bussed supplies, two transformers with Breaker closing between corresponding bus, the breaker between breaker, two sections of buses between generator and bus should divide Lock；When wherein transformer stops power supply (interruption maintenance or failure), for the normal power supply of proof load, another The breaker between breaker, two sections of buses between transformer and bus should close a floodgate, disconnected between power failure transformer and bus Breaker between road device and generator and bus answers separating brake；When two transformers all stop power supply, generator is needed to be negative Carry power supply, the breaker closing between breaker, two sections of buses between generator and bus.

In the prior art, the Chinese patent that the Authorization Notice No. that can refer to is, it discloses one kind to pass through detection load line Road decides whether to allow breaker closing with the presence or absence of short trouble and executes the operation closed a floodgate and device, is that one kind need not be applied Add dangerous voltage, loaded line situation can be found out, prevent breaker from mistakenly closing a floodgate under loaded line short-circuit condition, from basic On prevent super-large current impact accident occur control method and circuit.Device include power-supply circuit, sequential control circuit, Detection and failure sample circuit, breaker driving circuit detect loaded line by detection and failure sample circuit: if negative It is normal to carry route, then breaker driving circuit is allowed to close a floodgate；And once detect short trouble, it is locked, does not allow open circuit Device driving circuit closes a floodgate.Device and method have the advantages that energy automatic unlocking is after loaded line is normal so as to Reusability, and Have when detecting and prevents alternating current directly or loaded line is added in part and generates the safety effect of hidden danger.

Prior art among the above has the following deficiencies: the documents by setting sequential control circuit to guarantee After loaded line is normal can automatic unlocking can Reusability, but electromagnet, after separating brake, someone is not because knowing electromagnetism Iron separating brake and its circuit is closed a floodgate in maloperation, will lead to electromagnet works on and causes danger, while after combined floodgate, If the spread of voltage in circuit, electromagnet will back and forth beat in the state of combined floodgate and separating brake always, and in some places In coal mine, it is necessary to the bounce of electromagnet repeatedly works, so how to prevent false switching that circuit is placed in one simultaneously In the environment of a spread of voltage, electromagnet can beat repeatedly is a problem to be solved.

Utility model content

The purpose of the utility model is to provide a kind of working condition lower electromagnets in spread of voltage can be in bounce shape The electromagnet anti-error closing debounce circuit to work under state.

The above-mentioned purpose of utility model of the utility model has the technical scheme that

A kind of electromagnet anti-error closing debounce circuit, including rectifier bridge, reduction voltage circuit, π shape filter circuit, moss, control Circuit and electromagnet processed, the output end of the rectifier bridge and the input terminal of reduction voltage circuit couple, the output end of the reduction voltage circuit It is coupled with the input terminal of π shape filter circuit, one end of electromagnet and the output end of rectifier bridge couple, the leakage of the other end and moss The source electrode of pole coupling, moss is grounded setting, and the control circuit is connected with the output end of π shape filter circuit, control circuit packet The 4th comparator, the 4th capacitor and the tenth resistance are included, the grid coupling of the output end moss of the 4th comparator is positive Input terminal coupled in series has the 8th resistance, negative input and the tenth resistance coupled in series, the 4th capacitor and the 4th comparator Negative input coupled in series, and the 4th capacitor the other end be grounded setting.

By using above-mentioned technical proposal, if the work of electromagnet is input in circuit in the state of spread of voltage Voltage value when it is high when it is low, when voltage is low, electromagnet is in "on" position and starts to work, when voltage is high, electromagnet be in point Lock state simultaneously stops working, and in this way in voltage instability timing, electromagnet is in the automatic bounce state of continuous separating brake combined floodgate, in this way State is just suitable for some needs such as coal mine place that separating brake combined floodgate works repeatedly, reduces the workload of worker, and And the participation of worker, safety more are not needed.

The utility model is further arranged to: further including indicating circuit, the indicating circuit includes twelfth resistor and hair Optical diode, one end of twelfth resistor and the output end of rectifier bridge couple, anode and the twelfth resistor string of light emitting diode Connection coupling, the output end coupled in series of cathode and the 4th comparator are gone here and there between the 4th comparator and the grid of moss Connection is coupled with the 8th diode.

By using above-mentioned technical proposal, when carrying out separating brake, the output end of the 4th comparator is low level, and electric current passes through Twelfth resistor enters in light emitting diode, enters the output end of the 4th comparator then to be formed into a loop, light-emitting diodes Pipe issues green light, reminds relevant staff's circuit to be in gate-dividing state with this, when light emitting diode does not shine, illustrates this Line failure between place and power grid needs to overhaul in time, and when LED flash, then illustrate that the circuit is in Bounce state reminds relevant staff separate and avoids causing danger.

The utility model is further arranged to: the indicating circuit further includes the first voltage-stabiliser tube and the second voltage-stabiliser tube, and first The coupling of the output end of voltage-stabiliser tube and rectifier bridge, and its cathode is arranged close to 3rd resistor；Second voltage-stabiliser tube and the first voltage-stabiliser tube Coupled in series, and its cathode, close to the first voltage-stabiliser tube, the anode of light emitting diode is coupled with the anode of the second voltage-stabiliser tube.

By using above-mentioned technical proposal, electric current can generate pressure drop when passing through the first voltage-stabiliser tube and the second voltage-stabiliser tube, this Voltage of the sample when that can reach light emitting diode after by pressure drop twice and work normally, so that LED operation Stablize.

The utility model is further arranged to: the indicating circuit further includes the 7th diode, cathode and light-emitting diodes The anode coupling of pipe, plus earth setting.

By using above-mentioned technical proposal, when grid cut-off, the inside of light emitting diode can generate self induction electromotive force, by In self induction electromotive force and the flow direction of electric current on the contrary, electric current can flow back into light emitting diode by the 7th diode D7, luminous two Pole pipe voluntarily consumes the electric current of self induction electromotive force generation.

The utility model is further arranged to: further include time-delay closing circuit, time-delay closing circuit include the 5th voltage-stabiliser tube, Third comparator, the 5th comparator and the 5th capacitor, the output end of third comparator and the grid of moss couple, and negative sense is defeated Enter to hold coupled in series to have the 14th resistance, the other end of the 14th resistance is grounded setting, the positive input string of third comparator Connection is coupled with the 4th resistance, and the other end of the 4th resistance and the positive input of first comparator couple；5th comparator is born It is coupled with the 5th capacitor to input terminal, the other end of the 5th capacitor is grounded setting, and its negative input and third comparator Output end between coupled in series have the 16th resistance, the output end of the 5th comparator and the positive input coupling of third comparator It connects.

By using above-mentioned technical proposal, when being closed a floodgate, the 5th capacitor is obtained electric and is charged such electromagnet, In It charges after 20-30ms, the 5th capacitor is fully charged, and potential value increases, the potential of the negative input of such 5th comparator Value is less than its positive input, and the 5th comparator exports low level signal, and the negative input of such third comparator is low electricity Flat, the potential value of the positive input of such third comparator is higher than the potential value of its negative input, so third comparator High level signal is exported, the grid of such moss obtains electric, moss conducting, electromagnet start-up operation, to prevent electromagnet from existing Spark is generated when combined floodgate.

The utility model is further arranged to: the time-delay closing circuit further includes first comparator and the second comparator, The output end of the negative input of first comparator and the second comparator ground connection, positive input and π shape filter circuit couples, And the output interface of first comparator and the second comparator is power interface.

By using above-mentioned technical proposal, first comparator and the second comparator to third comparator, the 5th comparator with And control circuit power supply, to guarantee the voltage stabilization in time-delay closing circuit and control circuit.

The utility model is further arranged to: the 4th resistor in parallel is coupled with the 6th voltage-stabiliser tube, the 6th voltage-stabiliser tube Cathode and first comparator anode couple.

By using above-mentioned technical proposal, the 6th voltage-stabiliser tube can carry out pressure stabilizing to the positive input of third comparator, To guarantee the voltage stabilization of positive input, guarantee is precisely controlled electromagnet combined floodgate.

The utility model is further arranged to: the time-delay closing circuit further includes third capacitor, one end of third capacitor It is coupled with the positive input of third comparator, other end ground connection setting.

By using above-mentioned technical proposal, third capacitor can filter the electric current in third comparator positive input Wave, to guarantee the stability when work of third comparator.

In conclusion the advantageous effects of the utility model are as follows:

1. the utility model is by the 4th comparator of setting, the 4th capacitor and the tenth resistance to guarantee that electromagnet can jump It works in the state of dynamic；

2. the utility model indicates control circuit by the way that indicating circuit is arranged to prevent staff at work It causes danger；

3. the utility model, which guarantees light emitting diode when in use by the 7th diode of setting, can consume itself production Raw self induction electromotive force.

Detailed description of the invention

Fig. 1 is the integrated circuit structural schematic diagram of the utility model.

In figure, 1, rectifier bridge；D1, first diode；D2, the second diode；D3, third diode；D4, the four or two pole Pipe；MOV1, the first varistor；2, reduction voltage circuit；RV2, constant-voltage diode；R1, first resistor；R2, second resistance；3, π shape Filter circuit；R3,3rd resistor；C1, first capacitor；C2, the second capacitor；4, time-delay closing circuit；D5, the 5th voltage-stabiliser tube；T1, First comparator；T2, the second comparator；T3, third comparator；C3, third capacitor；T5, the 5th comparator；C5, the 5th capacitor； R14, the 14th resistance；R4, the 4th resistance；D6, the 6th voltage-stabiliser tube；R11, eleventh resistor；R8, the 8th resistance；C5, the 5th electricity Hold；R16, the 16th resistance；R17, the 17th resistance；R9, the 9th resistance；5, control circuit；T4, the 4th comparator；C4, the 4th Capacitor；D8, the 8th diode；R10, the tenth resistance；6, indicating circuit；R12, twelfth resistor；DZ1, the first voltage-stabiliser tube；DZ2, Second voltage-stabiliser tube；D7, the 7th diode；7, electromagnet；71, D9, freewheeling diode；Q1, moss.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

It referring to Fig.1, is a kind of electromagnet anti-error closing debounce circuit disclosed by the utility model, including rectifier bridge 1, decompression Circuit 2, π shape filter circuit 3, time-delay closing circuit 4, control circuit 5, indicating circuit 6 and electromagnet 7, rectifier bridge 1 include First diode D1, the second diode D2, the 4th diode D4, third diode D3 and the first varistor MOV1.Rectifier bridge 1 Including first diode D1, the second diode D2, the 4th diode D4 and third diode D3, first diode D1 and the two or two One end of pole pipe D2 couples and connects the positive input of power grid, and one end coupling of the 4th diode D4 and third diode D3 are simultaneously The other end of the negative input of connection power grid, the second diode D2 and the 4th diode D4 are mutually coupled and are grounded setting, the The other end of one diode D1 and third diode D3 are mutually coupled and are 1 output end of rectifier bridge, first diode D1 and the 4th Coupled in series has the first varistor MOV1, when voltage is excessive in circuit, the first varistor between the cathode of diode D4 Can be connected and be grounded, thus short circuit and burn.One end of electromagnet 7 and bearing for first comparator T1 and the second comparator T2 Pole coupling, another point coupled in series have moss Q1, and the drain electrode of moss Q1 is connected with electromagnet 7, source electrode ground connection setting.In When being closed a floodgate, rectifier bridge 1 obtains electric and is direct current by external AC conversion, is then re-fed into electromagnet 7, if The grid of moss Q1 obtains electric, then moss Q1 is connected, electromagnet 7 then starts to work.

Coupled in parallel has a sustained diode 9 on electromagnet 7, the cathode of sustained diode 9 close to 1 output end of rectifier bridge, When grid cut-off, the inside of electromagnet 7 can generate self induction electromotive force, since self induction electromotive force and the flow direction of electric current are on the contrary, electricity Stream can flow back into electromagnet 7 by sustained diode 9, and electromagnet 7 voluntarily consumes the electric current of self induction electromotive force generation, with Prevent electric current from flowing out and guaranteeing control circuit 3 and control precisely.

π shape filter circuit 22 includes 3rd resistor R3, first capacitor C1 and the second capacitor C2.The electricity of 3rd resistor R3 and second One end of resistance R2 coupled in series, first capacitor C1 and the second capacitor C2 are coupled with the both ends of 3rd resistor R3 respectively, and the other end is equal Ground connection setting.In this way through electric current herein after the filtering of first capacitor C1 and the second capacitor C2, the current value of output is more Add stabilization.

Reduction voltage circuit 2 includes constant-voltage diode RV2, first resistor R1 and second resistance R2, the cathode of constant-voltage diode RV2 It is coupled with 1 output end of rectifier bridge, plus earth setting.First resistor R1 and second resistance R2 coupled in series, first resistor R1 One end connect 1 output end of rectifier bridge.By the output end in rectifier bridge 1, constant-voltage diode RV2, the electricity exported from there are set Pressure becomes the voltage value of constant-voltage diode RV2 by constant-voltage diode RV2 pressure stabilizing later, realizes preliminary decompression, then voltage value It can be by again by being divided after first resistor R1 and second resistance R2 again, after being divided in this way by bleeder circuit 21 Voltage value is reduced to first comparator T1 and the second acceptable voltage value of comparator T2, prevents overtension and causes to compare Device damage.

Time-delay closing circuit 4 include the 5th voltage-stabiliser tube D5, first comparator T1, the second comparator T2, third comparator T3, The model of third capacitor C3, the 5th comparator T5 and the 5th capacitor C5C5, first comparator T1 and the 5th comparator T5 is The negative input of TLV3704, first comparator T1 is grounded, positive input stretched out by its power end and with 3rd resistor R3 One end far from second resistance R2 couples；The plus earth of 5th voltage-stabiliser tube D5, cathode and 3rd resistor R3 are far from the second electricity Hinder one end coupling of R2, the negative input ground connection of the second comparator T2, positive output end equally stretched out from power end and with 3rd resistor R3 is coupled far from one end of second resistance R2.The output end of third comparator T3 and the grid of moss Q1 couple, Its negative input coupled in series has the 14th resistance R14, and the other end of the 14th resistance R14 is grounded setting, third comparator The positive input coupled in series of T3 has the 4th resistance R4, and the other end of the 4th resistance R4 and the positive of first comparator T1 input End coupling, and coupled in parallel has the 6th voltage-stabiliser tube D6, the cathode and first comparator of the 6th voltage-stabiliser tube D6 on the 4th resistance R4 The anode coupling of T1, the positive input of anode and third comparator T3 couple, and the positive input of third comparator T3 connects It is connected to third capacitor C3, the other end of third capacitor C3 is grounded setting, and the output end of third comparator T3 is coupled with the 11st electricity R11 is hindered, the other end of eleventh resistor R11 is grounded setting, and one end of third capacitor C3 and the positive of third comparator T3 input End coupling, other end ground connection setting.

The positive input of 5th comparator T5 is connected with the 8th resistance R8, and the other end of the 8th resistance R8 is compared with first The positive input of device T1 couples, and the negative input of the 5th comparator T5 is coupled with the 5th capacitor C5, and the 5th capacitor C5's is another One end ground connection setting, and coupled in series has the 16th resistance between its negative input and the output end of third comparator T3 R16.The output end of 5th comparator T5 and the positive input of third comparator T3 couple.The positive input of 5th comparator T5 It is coupled with the 17th resistance R17 between end and output end, positive input also coupled in series has the 9th resistance R9, the 9th resistance The other end of R9 is grounded setting.

Since the power of electromagnet 7 is very big, so the direct current that rectifier bridge 1 rectifies out is equally very big, in this way in divide-shut brake During be easy to produce electric spark, so that operator be made to cause danger, rule of thumb, after divide-shut brake 20-40ms it Afterwards, the electric spark that high current divide-shut brake generates significantly reduces, in this way for the safety for increasing divide-shut brake, how effectively to point It is a problem to be solved that combined floodgate, which carries out delay,.

When being closed a floodgate, the 5th capacitor C5 is obtained electric and is charged electromagnet 7 in this way, after the 20-30ms that charges, the Five capacitor C5 are fully charged, and potential value increases, and it is defeated that the potential value of the negative input of such 5th comparator T5 is less than its forward direction Enter end, the 5th comparator T5 exports low level signal, and the negative input of such third comparator T3 is low level, such third The potential value of the positive input of comparator T3 is higher than the potential value of its negative input, so the high electricity of third comparator T3 output Ordinary mail number, the grid of such moss Q1 obtain electric, moss Q1 conducting, the start-up operation of electromagnet 7.

Control circuit 5 includes the 4th comparator T4, the 4th capacitor C4, the 8th diode D8 and the tenth resistance R10.4th ratio The grid of output end and moss Q1 compared with device T4 couples, connecing between positive input and the 8th resistance R8 and the 9th capacitor It is coupled at line, negative input and the 4th capacitor C4 coupled in series, the other end of the 4th capacitor C4 is grounded setting, the tenth resistance The negative input of one end of R10 and the 4th comparator T4 couple, the other end and the 15th resistance far from moss Q1 one End coupling, the anode of the 8th diode D8 are coupled with the grid of moss Q1, the output end coupling of cathode and the 4th comparator T4 It connects.

When carrying out separating brake to electromagnet 7, the voltage being passed through in rectifier bridge 1 is greater than voltage value when closing a floodgate, the 4th capacitor C4 is obtained electric and is charged, and after the 20-30ms that charges, the 4th capacitor C4 charging, potential value is increased, such 4th comparator The potential value of the negative input of T4 is greater than its positive input, and the 4th comparator T4 exports low level signal, such moss The grid power loss of Q1, moss Q1 is powered off so that electromagnet 7 stops working, and how someone wants to pass through button switch When directly opening electromagnet 7, since the 4th comparator T4 does not export low level always, so electromagnet 7 can not be opened, thus Staff's maloperation is prevented, to guarantee safety, and when closing a floodgate, since the voltage value that circuit is passed through when closing a floodgate is less than separating brake When voltage value, close a floodgate when the 4th capacitor C4 charging after potential value still less than the 4th comparator T4 positive input potential Value, the 4th comparator T4 exports high level signal, to not influence the normal work of moss Q1.

If low, the voltage when electromagnet 7 works high in the state of spread of voltage, the voltage value being input in circuit When low, electromagnet 7 is in "on" position and starts to work, and when voltage is high, electromagnet 7 is in gate-dividing state and stops working, this Sample is in the automatic bounce state of continuous separating brake combined floodgate in voltage instability timing, electromagnet 7, and such state is just suitable for coal mine Etc. some needs place that separating brake combined floodgate works repeatedly, reduce the workload of worker, and do not need the participation of worker, Safety more.

Indicating circuit 5 includes twelfth resistor R12, the first voltage-stabiliser tube DZ1, the second voltage-stabiliser tube DZ2, light emitting diode DS1 With the 7th diode D7.The cathode of one end of twelfth resistor R12 and the 6th voltage-stabiliser tube D6 couple, the first voltage-stabiliser tube DZ1 and the Six voltage-stabiliser tube D6 coupled in series, and its cathode is arranged close to twelfth resistor R12；Second voltage-stabiliser tube DZ2 and the first voltage-stabiliser tube DZ1 coupled in series, and its cathode is close to the first voltage-stabiliser tube DZ1；The anode of light emitting diode DS1 is with the second voltage-stabiliser tube DZ2's Anode coupling, the output end coupled in series of cathode and the 4th comparator T4；The cathode and light emitting diode of 7th diode D7 The anode coupling of DS1, plus earth setting.

When carrying out separating brake, the output end of the 4th comparator is low level, and electric current is by the 6th voltage-stabiliser tube D6, the 12nd electricity Resistance R12, the first voltage-stabiliser tube DZ1 and the second voltage-stabiliser tube DZ2 are entered in light emitting diode DS1, then enter the 4th comparator For the output end of T4 to be formed into a loop, light emitting diode DS1 issues green light, reminds relevant staff's circuit to be in separating brake with this State, when light emitting diode DS1 not shine when, illustrate the line failure at this between power grid, need to overhaul in time, and When LED flash, then illustrates that the circuit is in bounce state, remind relevant staff separate and avoid occurring It is dangerous.Electric current pass through the first voltage-stabiliser tube DZ1 and the second voltage-stabiliser tube DZ2 when can generate pressure drop, in this way by pressure drop twice it Voltage when light emitting diode DS1 is worked normally can be reached afterwards, so that light emitting diode DS1 the operation is stable, works as power grid When power-off, the inside of light emitting diode DS1 can generate self induction electromotive force, since self induction electromotive force and the flow direction of electric current are on the contrary, electricity Stream can flow back into light emitting diode DS1 by the 7th diode D7, and light emitting diode DS1 voluntarily consumes self induction electromotive force production Raw electric current guarantees control circuit 3 and controls precisely to prevent electric current from flowing out.

The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical Within novel protection scope.

Claims (8)

1. a kind of electromagnet anti-error closing debounce circuit, including rectifier bridge (1), reduction voltage circuit (2), π shape filter circuit (3), not This pipe (Q1), control circuit (5) and electromagnet (7), the output end of the rectifier bridge (1) and the input terminal coupling of reduction voltage circuit (2) It connects, the output end of the reduction voltage circuit (2) and the input terminal of π shape filter circuit (3) couple, one end of electromagnet (7) and rectification The output end of bridge (1) couples, and the drain electrode of the other end and moss (Q1) couple, and the source electrode of moss (Q1) is grounded setting, special Sign is: the control circuit (5) is connected with the output end of π shape filter circuit (3), and control circuit (5) includes the 4th comparator (T4), the 4th capacitor (C4) and the tenth resistance (R10), the grid coupling of the output end moss (Q1) of the 4th comparator (T4) It connecing, positive input coupled in series has the 8th resistance (R8), negative input and the tenth resistance (R10) coupled in series, the The negative input coupled in series of four capacitors (C4) and the 4th comparator (T4), and the other end ground connection of the 4th capacitor (C4) sets It sets.

2. electromagnet anti-error closing debounce circuit according to claim 1, it is characterised in that: it further include indicating circuit (6), The indicating circuit (6) includes twelfth resistor (R12) R12 and light emitting diode DS1, one end of twelfth resistor (R12) R12 It is coupled with the output end of rectifier bridge (1), anode and twelfth resistor (R12) R12 coupled in series of light emitting diode DS1 are born The output end coupled in series of pole and the 4th comparator (T4) is gone here and there between the 4th comparator (T4) and the grid of moss (Q1) Connection is coupled with the 8th diode (D8).

3. electromagnet (7) anti-error closing debounce circuit according to claim 2, it is characterised in that: the indicating circuit (6) It further include the first voltage-stabiliser tube (DZ1) and the second voltage-stabiliser tube (DZ2), the output end coupling of the first voltage-stabiliser tube (DZ1) and rectifier bridge (1) It connects, and its cathode is arranged close to 3rd resistor (R3)；Second voltage-stabiliser tube (DZ2) and the first voltage-stabiliser tube (DZ1) coupled in series, and And its cathode, close to the first voltage-stabiliser tube (DZ1), the anode of light emitting diode is coupled with the anode of the second voltage-stabiliser tube (DZ2).

4. electromagnet anti-error closing debounce circuit according to claim 3, it is characterised in that: the indicating circuit (6) is also Including the 7th diode (D7), the anode of cathode and light emitting diode is coupled, plus earth setting.

5. electromagnet anti-error closing debounce circuit according to claim 1, it is characterised in that: further include time-delay closing circuit (4), time-delay closing circuit (4) includes the 5th voltage-stabiliser tube (D5), third comparator (T3), the 5th comparator (T5) and the 5th capacitor (C5), the grid of the output end of third comparator (T3) and moss (Q1) couple, and negative input coupled in series has the tenth Four resistance (R14), the other end of the 14th resistance (R14) are grounded setting, the positive input series connection coupling of third comparator (T3) It is connected to the 4th resistance (R4), the other end of the 4th resistance (R4) and the positive input of first comparator (T1) couple；

The negative input of 5th comparator (T5) is coupled with the 5th capacitor (C5), and the other end ground connection of the 5th capacitor (C5) sets It sets, and coupled in series has the 16th resistance (R16) between its negative input and the output end of third comparator (T3), the 5th The output end of comparator (T5) and the positive input of third comparator (T3) couple.

6. electromagnet anti-error closing debounce circuit according to claim 5, it is characterised in that: the time-delay closing circuit It (4) further include first comparator (T1) and the second comparator (T2), the negative sense of first comparator (T1) and the second comparator (T2) The output end of input end grounding, positive input and π shape filter circuit (3) couples, and first comparator (T1) and second The output interface of comparator (T2) is power interface.

7. electromagnet anti-error closing debounce circuit according to claim 5, it is characterised in that: on the 4th resistance (R4) Coupled in parallel has the 6th voltage-stabiliser tube (D6), and the cathode of the 6th voltage-stabiliser tube (D6) and the anode of first comparator (T1) couple.

8. electromagnet anti-error closing debounce circuit according to claim 5, it is characterised in that: the time-delay closing circuit It (4) further include third capacitor (C3), one end of third capacitor (C3) and the positive input of third comparator (T3) couple, another One end ground connection setting.