CN106098472A - Hold concurrently and can restrain the pulse A.C. contactor of transient voltage - Google Patents
Hold concurrently and can restrain the pulse A.C. contactor of transient voltage Download PDFInfo
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- CN106098472A CN106098472A CN201610497451.XA CN201610497451A CN106098472A CN 106098472 A CN106098472 A CN 106098472A CN 201610497451 A CN201610497451 A CN 201610497451A CN 106098472 A CN106098472 A CN 106098472A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
Abstract
The invention discloses a kind of holding concurrently and can restrain the pulse A.C. contactor of transient voltage, including the regular alternating current catalyst being made up of movable contact MC, normally-closed contact NC, normally opened contact NO, dynamic iron core M, static iron core G, back-moving spring F, magnet exciting coil L and 100 liang of parts of electronic unit, it is characterised in that: described electronic unit 100 is made up of transient voltage suppressor TVS, AC-DC change-over circuit 101, individual pulse generation circuit 102, on-off circuit 103, bridge circuit 104, reduction voltage circuit 105.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, particularly relate to that a kind of individual pulse controls can be with efficient electricity-saving and hold concurrently
There is " hold concurrently and can restrain the pulse A.C. contactor of transient voltage " of the function restraining transient voltage.
Background technology
A.C. contactor (Alternating Current Contactor) is a kind of application low tension widely
Device, ends 2015, and the A.C. contactor of China's on-line operation surpasses 1,000,000,000, and with the rate delivery of annual newly-increased 80,000,000
Increase.Its operation principle is to utilize electric magnet to drive movable contact (movable contact), makes normally-closed contact (normally
Closed contact) or normally opened contact (normally open contact) separate or close, reach to be switched off or on circuit
Purpose.It is applicable to start or control three phase induction motor and other electrical equipment.
Fig. 1 is the fundamental diagram of regular alternating current catalyst.The A.C. contactor of this routine is mainly by dynamic iron core, quiet ferrum
Core, magnet exciting coil, back-moving spring, movable contact, normally-closed contact, normally opened contact are formed.When magnet exciting coil connect AC220V,
During AC110V or AC380V voltage (being generally called AC220V, AC110V or AC380V below is AC voltage or field power supply), dynamic iron core
The effect of the magnetic force produced by magnet exciting coil and close with static iron core, the movable contact linked with dynamic iron core the most therewith with normally opened contact
Guan Bi, external circuit will pass through this normally opened contact and connects；When the AC voltage on magnet exciting coil disconnects, dynamic iron core loss of excitation is also subject to multiple
The position effect of spring and separate with static iron core, normally opened contact resets and disconnects, and external circuit is cut off the most therewith.
The work process of the A.C. contactor of this routine can be divided into " adhesive ", " sticking ", RESET three phases:
1, adhesive: magnet exciting coil and AC Voltage On state, dynamic and static iron core adhesive.In this stage, for overcoming the inertia of dynamic iron core
With the elastic force of back-moving spring, field power supply must provide for bigger power (hereinafter referred to as this power is " adhesive power "), dynamic and static ferrum
Core could be the most attracted.
2, sticking: magnet exciting coil continues and AC Voltage On state, dynamic and static iron core continues to keep the state of adhesive.In this stage,
Field power supply need only provide less power (hereinafter referred to as this power is " holding power "), and dynamic and static iron core also can continue adhesive.If
In this stage, field power supply provides excessive holding power, will result in waste of energy and causes unnecessary of A.C. contactor
Heat heats up；
3, resetting: magnet exciting coil disconnects AC voltage, dynamic and static iron core RESET separates.
The purposes of A.C. contactor varies, and structure also varies, but their operation principle is all identical with Fig. 1.
Conventional A.C. contactor owing to adhesive and sticking stage magnet exciting coil all passing to identical AC voltage,
Therefore there is following critical defect:
1, meaningless power consumption: front already described, in adhesive and sticking stage, the most logical in the magnet exciting coil of conventional A.C. contactor
With " identical " AC voltage, make holding power excessive, cause meaningless electric energy loss；
2, heating: disastrous effect produced by meaningless electric energy loss is " heat up heating ", time serious, even can burn routine
The magnet exciting coil of A.C. contactor；
3, there is annoying AC noise.
The critical defect existed for regular alternating current catalyst, the technical staff in electronics, electrical apparatus industry studies, devises
Multiple " electricity-saving circuit ", " electricity-saving appliance ", " energy saving ac contactor " for improving regular alternating current catalyst performance is below
It is referred to as " prior art ".
Above-mentioned prior art is the performance improving regular alternating current catalyst really, has made useful exploration and has achieved
Certain achievement, but generally there is following defect: do not set " transient voltage (voltagetransient) " and restrain measure, do not have
The function of " supression transient voltage ".
The load of A.C. contactor such as motor is starting or shutdown moment, and the self-induction that can produce magnitude of voltage the highest is electronic
Gesture (self induction electromotive force) is hereafter referred to collectively as " transient voltage ".Because described is " existing
Have technology " do not set " transient voltage " supression measure, so, " transient voltage " can scurry into " existing skill by AC voltage input end mouth
Art " indication " energy saving ac contactor " in, the device such as electric capacity therein, IGCT may therefore punch through damage！
Here it is " energy saving ac contactor " majority of prior art indication rests on paper, the fresh reason obtaining application it
One.
For regular alternating current catalyst and the present situation of prior art, the target that the present invention is to be reached is: " applying electronic skill
Art, rebuilds traditional industry ", design a kind of electronic circuit device the simplest, used try one's best few, price try one's best cheap,
Performance exceed prior art, can be with the pulse A.C. contactor of transient voltage " hold concurrently can restrain " of efficient electricity-saving.
Summary of the invention
A kind of holding concurrently can restrain the pulse A.C. contactor of transient voltage, including by movable contact MC, normally-closed contact NC, normally opened
Regular alternating current catalyst that contact NO, dynamic iron core M, static iron core G, back-moving spring F, magnet exciting coil L are formed and electronic unit 100
Two part, it is characterised in that: described electronic unit 100 by transient voltage suppressor TVS, AC-DC change-over circuit 101,
Individual pulse generation circuit 102, on-off circuit 103, bridge circuit 104, reduction voltage circuit 105 form, wherein, and described transient electrical
It is oppressive that diode TVS processed is in parallel with described AC-DC change-over circuit 101, one end is connected with the P1 end of AC voltage, another
End is connected with the P2 end of AC voltage；The D/C voltage of described AC-DC change-over circuit 101 output is Vcc；Described single arteries and veins
3 ends of punching generation circuit 102 are connected with the anode of Vcc voltage, 4 ends are connected with 5 ends of on-off circuit 103；Described opens
6 ends closing circuit 103 are connected with the DC2 end of bridge circuit 104；The AC1 end of described bridge circuit 104 and the P1 of AC voltage
End is connected, DC1 end is connected with the A1 end of described magnet exciting coil L, DC2 end is connected with the A2 end of described magnet exciting coil L
Connect；7 ends of described reduction voltage circuit 105 are connected with the AC2 end of described bridge circuit 104；Described AC-DC conversion electricity
The negative terminal of D/C voltage Vcc of road 101 output and individual pulse generation circuit 102, on-off circuit 103, reduction voltage circuit 105 are respective
One end is all connected with the P2 end of AC voltage.
Described electronic unit 100 and regular alternating current catalyst are combined by manner discussed above, can form this
" hold concurrently and can restrain the pulse A.C. contactor of transient voltage " of bright indication.
Described individual pulse generation circuit 102 can use multiple circuit structure, following one that the present invention is preferred:
It is made up of the first resistance R1, the second resistance R2, the first electric capacity C1, time-base integrated circuit IC, 3 ends, 4 ends；Wherein, 3 ends and institute
The anode of D/C voltage Vcc of AC-DC change-over circuit 101 output stated is connected；One end of first resistance R1 is connected with 3 ends,
The other end and one end of the first electric capacity C1, one end of the second resistance R2,6 feet of time-base integrated circuit IC, 2 feet are all connected；Collection
Become 8 feet of time base circuit IC, 4 feet to be all connected with 3 ends, 3 feet and 4 ends are connected；The other end of the first described electric capacity C1,
The other end of two resistance R2,1 foot of time-base integrated circuit IC are all connected with the P2 end of AC voltage.
The operating characteristic of described individual pulse generation circuit 102 is: at described A.C. contactor adhesive, sticking, answer
In the working cycle of position, it only exports individual pulse, and, in the described A.C. contactor adhesive stage, described integrated time
3 foot output high level of base IC circuit, for it time domain " accounted for " of described individual pulse.
In described individual pulse generation circuit 102, described time-base integrated circuit IC select 555 integrated time base electricity
Road, according to its operating characteristic, 555 described time-base integrated circuits can use audion, integrated operational amplifier to replace；
Described on-off circuit 103 can use multiple circuit structure, the present invention is preferred following circuit structure: its by
3rd resistance R3, the 5th diode D5, field effect transistor FET (Field Effect Transistor, FET), 5 ends, 6 end compositions；
Wherein, the 3rd described resistance R3 one end is connected with 5 ends, and the other end is connected with the gate of described field effect transistor FET；?
The drain electrode of effect pipe FET is connected with the negative pole of the 5th described diode D5, source electrode is connected with the P2 end with AC voltage；The
Positive pole and 6 ends of five diode D5 are connected.
Described field effect transistor FET can be with other switching devices the most unidirectional thyratron transistor (Silicon
Controlled Rectifier, SCR), two-way thyratron transistor (Triode AC Switch, TRIAC), insulated gate bipolar
Transistor (Insulatend Gate Bipolar Transistor, IGBT), electron injection enhancement gate transistor
(Injection Enhanced Gate Tansistor, IEGT), SITH (Static Induction
Thyristor, SITH) or switch triode replacement.
Described bridge circuit 104 can use multiple circuit structure, the present invention is preferred following circuit structure: its by
First diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, AC1 end, AC2 end, DC1 end, DC2 end group
Becoming, wherein, the negative pole of the first diode D1, the positive pole of the second diode D2 are all connected with AC1 end；3rd diode D3 is just
Pole, the positive pole of the first diode D1 are all connected with DC2 end；The negative pole of the second diode D2, the 4th diode D4 negative pole equal
It is connected with DC1 end；The negative pole of the 3rd diode D3, the positive pole of the 4th diode D4 are all connected with AC2 end.
Described reduction voltage circuit 105 can also use multiple circuit structure, the present invention is preferred following circuit structure: its
It is made up of the second electric capacity C2,7 ends；Further, second described electric capacity C2 one end is connected with 7 described ends, the other end is electric with AC
The P2 end of pressure is connected.
The application present invention, can obtain following beneficial effect:
1, efficient electricity-saving:
In order to the efficient electric energy of the present invention is described, we have done following test:
(1), first survey regular alternating current catalyst power consumption: commercially available CJX2 3201 type A.C. contactor: for 4.7W；
(2), survey by technical scheme again: above-mentioned commercially available CJX2 3201 type A.C. contactor adds the present invention's
The power consumption of " hold concurrently and can restrain the pulse A.C. contactor of transient voltage " of the indication of the present invention of electronic unit 100 composition:
For 0.3W；
Measured result shows, compared with commercially available CJX2 3201 type A.C. contactor, the electric energy of the present invention can
Reach 93.6%.
2, quiet without making an uproar:
When " hold concurrently and can restrain the pulse A.C. contactor of transient voltage " of indication of the present invention is run, quietness is without audible noise.
Commercially available CJX2 3201 type A.C. contactor has the AC noise of obvious audible when running.
3, low grade fever runs: the present invention has the function of efficient electricity-saving, has saved electric energy, certainty low grade fever during operation.
4, save material: the application present invention, the number of turns of magnet exciting coil L can be reduced.Actual measurement shows, by above-mentioned commercially available
The number of turns of the magnet exciting coil L of CJX2 3201 type A.C. contactor removes 800 circles, indication of the present invention " hold concurrently can restrain transient electrical
The pulse A.C. contactor of pressure " still can keep " efficient electricity-saving, quiet without making an uproar, low grade fever runs " premium properties.Play this
This bright advantage, can make A.C. contactor reduce the consumption of expensive enamel covered wire.
5, there is the function of supression transient voltage, the present invention can be protected to exempt from the infringement of transient voltage, thus, it is ensured that this
Invention runs reliably and with long-term.
In brief: the application present invention, the A.C. contactor of manufacture " energy-conservation, consumption reduction, noise elimination, reliability service " can be innovated.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of regular alternating current catalyst；
Fig. 2 is the functional-block diagram of the present invention；
Fig. 3 is the circuit theory diagrams of embodiment 1；
Fig. 4 a is AC voltage oscillogram；
Fig. 4 b is the timing chart of individual pulse generation circuit 102 output.
Detailed description of the invention
Below in conjunction with the accompanying drawings, embodiments of the present invention are described.
Fig. 2 is the functional-block diagram of the present invention, and Fig. 3 is the circuit theory diagrams of embodiment 1.In Fig. 2: L is that regular alternating current connects
Magnet exciting coil in tentaculum, A1, A2 are its two connectivity ports；Dashed rectangle 100 represents the electronic unit 100 of the present invention.
In conjunction with Fig. 1, Fig. 2；A kind of holding concurrently can restrain the pulse A.C. contactor of transient voltage, including by movable contact MC, often
The regular alternating current catalyst that closed contact NC, normally opened contact NO, dynamic iron core M, static iron core G, back-moving spring F, magnet exciting coil L are formed
And 100 liang of parts of electronic unit, it is characterised in that: described electronic unit 100 is by transient voltage suppressor TVS, AC-
DC change-over circuit 101, individual pulse generation circuit 102, on-off circuit 103, bridge circuit 104, reduction voltage circuit 105 form, its
In, described transient voltage suppressor TVS and described AC-DC change-over circuit 101 are in parallel, one end and AC voltage
P1 end is connected, the other end is connected with the P2 end of AC voltage；The D/C voltage of described AC-DC change-over circuit 101 output is
Vcc；3 ends of described individual pulse generation circuit 102 are connected with the anode of Vcc voltage, 5 ends of 4 ends and on-off circuit 103
It is connected；6 ends of described on-off circuit 103 are connected with the DC2 end of bridge circuit 104；Described bridge circuit 104
AC1 end is connected with the P1 end of AC voltage, DC1 end is connected with the A1 end of described magnet exciting coil L, DC2 end is encouraged with described
The A2 end of magnetic coil L is connected；7 ends of described reduction voltage circuit 105 are connected with the AC2 end of described bridge circuit 104；Institute
The negative terminal of D/C voltage Vcc of AC-DC change-over circuit 101 output stated and individual pulse generation circuit 102, on-off circuit 103,
The respective one end of reduction voltage circuit 105 is all connected with the P2 end of AC voltage.
Described electronic unit 100 and regular alternating current catalyst are combined by manner discussed above, can form this
" hold concurrently and can restrain the pulse A.C. contactor of transient voltage " of bright indication.
In conjunction with Fig. 3: in embodiment 1:
First resistance R1, the second resistance R2, the first electric capacity C1, time-base integrated circuit IC, 3 ends, 4 ends constitute the present embodiment
The individual pulse generation circuit 102 of 1；Wherein, the anode of D/C voltage Vcc that 3 ends export with described AC-DC change-over circuit 101
It is connected；One end of first resistance R1 is connected with 3 ends, the other end and one end of the first electric capacity C1, one end of the second resistance R2,
6 feet of time-base integrated circuit IC, 2 feet are all connected；8 feet of time-base integrated circuit IC, 4 feet are all connected with 3 ends, 3 feet and 4 ends
It is connected；The described other end of the first electric capacity C1, the other end of the second resistance R2, time-base integrated circuit IC 1 foot all and AC
The P2 end of voltage is connected.
Described time-base integrated circuit IC selects 555 time-base integrated circuits, and according to its operating characteristic, described 555 are integrated
Time base circuit can use audion, integrated operational amplifier to replace.
3rd resistance R3, the 5th diode D5, field effect transistor FET, 5 ends, 6 ends constitute the on-off circuit of the present embodiment 1
103；Wherein, the 3rd described resistance R3 one end is connected with 5 ends, and the other end is connected with the gate of described field effect transistor FET
Connect；The drain electrode of field effect transistor FET is connected with the negative pole of the 5th described diode D5, source electrode is connected with the P2 end with AC voltage
Connect；Positive pole and 6 ends of the 5th diode D5 are connected.
The personnel of this specialty will be apparent that described field effect transistor FET can be with the most unidirectional crystal of other switching devices
Thyratron, two-way thyratron transistor, insulated gate bipolar transistor, electron injection enhancement gate transistor, SITH
Or switch triode replaces.
First diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, AC1 end, AC2 end, DC1
End, DC2 end constitute the bridge circuit 104 of the present embodiment 1；Wherein, the negative pole of the first diode D1, the second diode D2 are just
The most all it is connected with AC1 end；The positive pole of the 3rd diode D3, the positive pole of the first diode D1 are all connected with DC2 end；Two or two
The negative pole of pole pipe D2, the negative pole of the 4th diode D4 are all connected with DC1 end；The negative pole of the 3rd diode D3, the 4th diode
The positive pole of D4 is all connected with AC2 end.
In the present embodiment 1, described the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode
D4, use integrated rectified current raise.
Second electric capacity C2,7 ends constitute the reduction voltage circuit 105 of the present embodiment 1；Wherein, second described electric capacity C2 one end
Be connected with 7 described ends, the other end is connected with the P2 end of AC voltage.
In conjunction with Fig. 3, Fig. 4 a, Fig. 4 b:
During t=t1, AC Voltage On state, AC-DC change-over circuit 101 output dc voltage Vcc.Now, the first electric capacity C1 two ends
Voltage i.e. 2 feet of time-base integrated circuit IC, voltage Vi=0 ＜ 1/3Vcc ＜ 2/3Vcc on 6 feet, time-base integrated circuit IC's
Voltage V3 on 3 feet is high level, i.e. V3 ≈ Vcc.
In t1～t3 time domain, D/C voltage Vcc of described AC-DC change-over circuit 101 output by the first resistance R1 to the
One electric capacity C1 charging, the voltage Vi on the first electric capacity C1 constantly rises.
Voltage Vi ＞ 2/ during to t=t3, on the voltage on the first electric capacity C1 i.e. 6 feet of time-base integrated circuit IC, 2 feet
Voltage V3 on 3 feet of 3Vcc ＞ 1/3Vcc, time-base integrated circuit IC becomes low level, i.e. V3 ≈ 0.
Voltage Vi on voltage in t3～t4 time domain, the first electric capacity C1 i.e. 6 feet of time-base integrated circuit IC, 2 feet is still
For Vi ＞ 2/3Vcc ＞ 1/3Vcc state, the voltage V3 on 3 feet of time-base integrated circuit IC is still low level, remains as V3 ≈ 0
State.
To sum up analyze understand: the voltage V3 on 3 feet of time-base integrated circuit IC is: t1～t3 time domain, for pulse account for time
Territory, it is high level；T3～t4 time domain, for the time domain that pulse is empty, it is low level.Its impulse waveform is represented by Fig. 4 b.
According to above analysis, in conjunction with Fig. 3, Fig. 4 a, Fig. 4 b, below, the work process of elaboration the present embodiment 1:
1, adhesive:
During t=t1, AC Voltage On state, described V3 is high level, and it triggers field effect transistor after the 3rd resistance R3 dividing potential drop
FET turns on.AC voltage provides " adhesive power " by field effect transistor FET for the present embodiment 1.
P1 be just, P2 be the negative positive half cycle of AC voltage, the electric current i in magnet exciting coil L is along P1 AC1 end D2
The path circulation of DC1 end A1 magnet exciting coil L A2 DC2 end 6 end D5 field effect transistor FET P2, described encourages
Magnetic coil L charging energy-storing.
Dynamic iron core M is started " adhesive starting " by the effect of electromagnetic force produced by magnet exciting coil L.
P1 be bear, P2 is positive AC voltage negative half cycle, the 5th diode D5 cut-off.Due in described magnet exciting coil L
Electric current i can not suddenly change, its will along following two paths continue circulation claim " afterflow ", or claim magnet exciting coil L electric discharge release
Can: Article 1 path: A1 magnet exciting coil L A2 DC2 end D1 AC1 end D2 DC1 end A1；Article 2 path:
A1 magnet exciting coil L A2 DC2 end D3 AC2 end D4 DC1 end A1.Dynamic iron core M is produced by " afterflow " electric current
The effect of raw electromagnetic force and continue to do the action of " adhesive starting ".
During t=t2, dynamic iron core M and static iron core G closes, and described " holds concurrently and can restrain the pulse ac contactor of transient voltage
Device " complete attracting process and enter the sticking stage.
2, sticking:
In t2～t3 time domain, V3 is still high level, and described field effect transistor FET continues to conducting；During to t=t3, V3 becomes
For low level, described field effect transistor FET turns off.The electric current i of this t2～t3 time domain serves " holding concurrently and can restrain wink described in consolidation
The pulse A.C. contactor of time variant voltage " effect of attracting state.
In conjunction with Fig. 3, described field effect transistor FET is closed when t=t3 and is had no progeny, and AC voltage is after the second electric capacity C2 blood pressure lowering
Described " hold concurrently and can restrain the pulse A.C. contactor of transient voltage " provides holding power.
In t3～t4 time domain:
When AC voltage be P1 be just, P2 be negative positive half cycle time, " holding current " i in magnet exciting coil L is along P1 AC1
End D2 DC1 end A1 magnet exciting coil L A2 DC2 end D3 AC2 end 7 end the second electric capacity C2 (blood pressure lowering) P2
Path circulation；
When AC voltage be P1 be bear, P2 be positive negative half period time, " holding current " i in magnet exciting coil L is along P2
Two electric capacity C2 (blood pressure lowering) 7 end AC2 end D4 DC1 end A1 magnet exciting coil L A2 DC2 end D1 AC1 ends
The path circulation of P1.
The value of the second electric capacity C2 need only be adjusted, so that it may adjust " holding current " or " holding power ", with two under reaching
Purpose:
(1), described " hold concurrently and can restrain the pulse A.C. contactor of transient voltage " reliable sticking is made；
(2), above-mentioned first purpose is realized with alap " holding power ".
3, reset
During t=t4, AC voltage turns off, and " holding current " i in magnet exciting coil L is along A1 magnet exciting coil L A2 DC2
End D1 AC1 end D2 DC1 end A1 and A1 magnet exciting coil L A2 DC2 end D3 AC2 end D4 DC1
End A1 bis-paths " afterflow " is also progressively decreased to zero, described " hold concurrently and can restrain the pulse A.C. contactor of transient voltage "
Reset.
During t=t5, AC voltage recloses, the present embodiment 1 indication " hold concurrently can restrain transient voltage pulse exchange connect
Tentaculum " it is once again powered up, reenter in the working cycle of " adhesive ", " sticking ", RESET.
Understand in sum:
The operating characteristic of 1, described individual pulse generation circuit 102 is: described A.C. contactor adhesive, sticking,
In the working cycle resetted, it only exports individual pulse, and, the duty of described A.C. contactor is by described " list
Pulse " control: in the described A.C. contactor adhesive stage, the 3 foot output high level of described time-base integrated circuit IC, for institute
It time domain " accounted for " of the individual pulse stated；At described A.C. contactor sticking stage, 3 feet of described time-base integrated circuit IC
Output low level, for the time domain of described individual pulse it " empty ".
2, described bridge circuit 104 has two kinds of functions in the present invention concurrently, and first, rectification function: by magnet exciting coil L
Electric current rectification become direct current；Second, afterflow function: provide " afterflow " path for the electric current in magnet exciting coil L.
In conjunction with Fig. 2, Fig. 3: one of feature of present invention is: the input at AC voltage is provided with transient voltage suppressor
TVS.Described transient voltage suppressor TVS serves suppression outside " transient voltage " effect.If producing when being struck by lightning
Transient voltage or the load such as motor start-up of A.C. contactor, turn off time self induction electromotive force produce transient voltage alter
Enter in the electronic unit 100 of the present invention, the described device among electronic unit 100 such as time-base integrated circuit IC, field effect
Pipe FET may breakdown damage.After the input of AC voltage arranges transient voltage suppressor TVS, when outside is scurried into
The magnitude of voltage of " transient voltage " higher than the breakdown voltage of described transient voltage suppressor TVS time, it is equivalent to short circuit,
The electronic unit 100 of the present invention is just protected.
Above describing technical scheme, all are without departing from the replacement of the essence of technical scheme, all
Should be in the range of the claim of the present invention.
Claims (8)
1. hold concurrently and can restrain the pulse A.C. contactor of transient voltage, including by movable contact MC, normally-closed contact NC, normally opened touch
Regular alternating current catalyst that point NO, dynamic iron core M, static iron core G, back-moving spring F, magnet exciting coil L are formed and electronic unit 100 liang
Partly, it is characterised in that: described electronic unit 100 is by transient voltage suppressor TVS, AC-DC change-over circuit 101, list
Individual pulse generating circuit 102, on-off circuit 103, bridge circuit 104, reduction voltage circuit 105 form.
2. as claimed in claim 1 holding concurrently can restrain the pulse A.C. contactor of transient voltage, it is characterised in that: wherein, institute
Transient voltage suppressor TVS stated and described AC-DC change-over circuit 101 are in parallel, the P1 end phase of one end and AC voltage
Connect, the other end is connected with the P2 end of AC voltage；The D/C voltage of described AC-DC change-over circuit 101 output is Vcc；Described
3 ends of individual pulse generation circuit 102 be connected with the anode of Vcc voltage, 4 ends are connected with 5 ends of on-off circuit 103；
6 ends of described on-off circuit 103 are connected with the DC2 end of bridge circuit 104；The AC1 end of described bridge circuit 104 and AC
The P1 end of voltage is connected, DC1 end is connected with the A1 end of described magnet exciting coil L, DC2 end and described magnet exciting coil L
A2 end is connected；7 ends of described reduction voltage circuit 105 are connected with the AC2 end of described bridge circuit 104；Described AC-
The negative terminal of D/C voltage Vcc of DC change-over circuit 101 output and individual pulse generation circuit 102, on-off circuit 103, reduction voltage circuit
105 respective one end are all connected with the P2 end of AC voltage.
The most according to claim 2 holding concurrently can restrain the pulse A.C. contactor of transient voltage, it is characterised in that:
Described individual pulse generation circuit 102 is by the first resistance R1, the second resistance R2, the first electric capacity C1, time-base integrated circuit
IC, 3 ends, 4 end compositions；Wherein, the anode of D/C voltage Vcc that 3 ends export with described AC-DC change-over circuit 101 is connected；
One end of first resistance R1 is connected with 3 ends, the other end and one end of the first electric capacity C1, one end of the second resistance R2, integrated time
6 feet of base IC circuit, 2 feet are all connected；8 feet of time-base integrated circuit IC, 4 feet are all connected with 3 ends, 3 feet and 4 ends are connected
Connect；The described other end of the first electric capacity C1, the other end of the second resistance R2, time-base integrated circuit IC 1 foot all with AC voltage
P2 end be connected.
The most according to claim 3 holding concurrently can restrain the pulse A.C. contactor of transient voltage, it is characterised in that: described
Time-base integrated circuit IC selects 555 time-base integrated circuits.
The most according to claim 4 holding concurrently can restrain the pulse A.C. contactor of transient voltage, it is characterised in that: described
555 time-base integrated circuits can replace with audion or integrated operational amplifier.
The most according to claim 2 holding concurrently can restrain the pulse A.C. contactor of transient voltage, it is characterised in that: described
On-off circuit 103 is made up of the 3rd resistance R3, the 5th diode D5, field effect transistor FET, 5 ends, 6 ends；Wherein, the described 3rd
Resistance R3 one end is connected with 5 ends, and the other end is connected with the gate of described field effect transistor FET；The drain electrode of field effect transistor FET
Be connected with the negative pole of the 5th described diode D5, source electrode is connected with the P2 end with AC voltage；5th diode D5 is just
Pole is connected with 6 ends.
The most according to claim 2 holding concurrently can restrain the pulse A.C. contactor of transient voltage, it is characterised in that: described
Bridge circuit 104 by the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, AC1 end, AC2 end,
DC1 end, DC2 end form, and wherein, the negative pole of the first diode D1, the positive pole of the second diode D2 are all connected with AC1 end；The
The positive pole of three diode D3, the positive pole of the first diode D1 are all connected with DC2 end；The negative pole of the second diode D2, the four or two
The negative pole of pole pipe D4 is all connected with DC1 end；The negative pole of the 3rd diode D3, the 4th diode D4 positive pole all with AC2 end phase
Connect.
The most according to claim 2 holding concurrently can restrain the pulse A.C. contactor of transient voltage, it is characterised in that: described
Reduction voltage circuit 105 is made up of the second electric capacity C2,7 ends；Further, second described electric capacity C2 one end is connected, separately with 7 described ends
One end is connected with the P2 end of AC voltage.
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| CN201610497451.XA CN106098472B (en) | 2016-06-25 | 2016-06-25 | And the pulse A.C. contactor of transient voltage can be restrained |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344102A (en) * | 1980-09-18 | 1982-08-10 | Square D Company | Anti-telegraph control circuit for electromagnet coil |
| CN103400724A (en) * | 2013-08-14 | 2013-11-20 | 宁波市镇海华泰电器厂 | Power saving and silencing AC contactor with thunder-proof function |
| CN104103457A (en) * | 2014-08-18 | 2014-10-15 | 王稳忠 | Energy-saving and anti-shake controller circuit of contactor |
| CN104613219A (en) * | 2015-03-01 | 2015-05-13 | 宁波市镇海华泰电器厂 | Double-threshold-value type power-saving silencing AC electromagnetic valve |
-
2016
- 2016-06-25 CN CN201610497451.XA patent/CN106098472B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344102A (en) * | 1980-09-18 | 1982-08-10 | Square D Company | Anti-telegraph control circuit for electromagnet coil |
| CN103400724A (en) * | 2013-08-14 | 2013-11-20 | 宁波市镇海华泰电器厂 | Power saving and silencing AC contactor with thunder-proof function |
| CN104103457A (en) * | 2014-08-18 | 2014-10-15 | 王稳忠 | Energy-saving and anti-shake controller circuit of contactor |
| CN104613219A (en) * | 2015-03-01 | 2015-05-13 | 宁波市镇海华泰电器厂 | Double-threshold-value type power-saving silencing AC electromagnetic valve |
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| CN106098472B (en) | 2018-09-14 |
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