CN106098472B - And the pulse A.C. contactor of transient voltage can be restrained - Google Patents
And the pulse A.C. contactor of transient voltage can be restrained Download PDFInfo
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- CN106098472B CN106098472B CN201610497451.XA CN201610497451A CN106098472B CN 106098472 B CN106098472 B CN 106098472B CN 201610497451 A CN201610497451 A CN 201610497451A CN 106098472 B CN106098472 B CN 106098472B
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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 simultaneous pulse A.C. contactors that can restrain transient voltage, include by 100 liang of parts of movable contact MC, normally-closed contact NC, normally opened contact NO, dynamic iron core M, static iron core G, resetting spring F, magnet exciting coil L the regular alternating current contactor formed and electronic unit, it is characterised in that：The electronic unit 100 occurs circuit 102, switching circuit 103, bridge circuit 104, reduction voltage circuit 105 by transient voltage suppressor TVS, AC-DC conversion circuit 101, single pulse and forms.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus more particularly to it is a kind of with single pulse control can be with efficient electricity-saving and simultaneous
Have " and the pulse A.C. contactor of transient voltage can be restrained " of the function of restraining transient voltage.
Background technology
A.C. contactor (Alternating Current Contactor) is a kind of to be widely used general low tension
Device ends 2015, and the A.C. contactor of China's on-line operation surpasses 1,000,000,000, and to increase 80,000,000 rate deliveries newly every year
Increase.Its operation principle is to drive movable contact (movable contact) using electromagnet, makes normally-closed contact (normally
Closed contact) or normally opened contact (normally open contact) detaches or closure, reaches and is switched off or on circuit
Purpose.It is suitable for starting or control three phase induction motor and other electrical equipments.
Fig. 1 is the fundamental diagram of regular alternating current contactor.This conventional A.C. contactor is mainly by dynamic iron core, quiet iron
Core, magnet exciting coil, resetting spring, movable contact, normally-closed contact, normally opened contact are formed.When magnet exciting coil connect AC220V,
When AC110V or AC380V voltages (it is AC voltages or field power supply to be generally called AC220V, AC110V or AC380V below), dynamic iron core
By magnet exciting coil generate magnetic force effect and with static iron core be closed, with dynamic iron core linkage movable contact also therewith with normally opened contact
It is closed, external circuit will pass through this normally opened contact and connect；When the AC voltages on magnet exciting coil disconnect, dynamic iron core loss of excitation and by multiple
The effect of position spring and detached with static iron core, normally opened contact, which resets, to be disconnected, and external circuit is just cut off therewith.
The course of work of this conventional A.C. contactor can be divided into " actuation ", " sticking ", Reset three phases：
1, it is attracted：Magnet exciting coil and AC Voltage On states, dynamic and static iron core are attracted.In this stage, to overcome the inertia of dynamic iron core
With the elastic force of resetting spring, field power supply must provide larger power (hereinafter referred to as this power is " being attracted power "), dynamic and static iron
Core could be mutually attracted.
2, sticking：Magnet exciting coil continues to continue the state for keeping being attracted with AC Voltage On states, dynamic and static iron core.In this stage,
Field power supply need only provide smaller power (hereinafter referred to as this power is " holding power "), and dynamic and static iron core can also continue to be attracted.If
In this stage, field power supply provides excessive holding power, will cause waste of energy and leads to the unnecessary hair of A.C. contactor
Heat heating；
3, it resets：Magnet exciting coil disconnects AC voltages, dynamic and static iron core Reset separation.
The purposes of A.C. contactor is multifarious, and structure is also multifarious, but their operation principle is identical as Fig. 1.
Conventional A.C. contactor due to being attracted and passing to identical AC voltages in sticking stage magnet exciting coil,
Therefore there are critical defects below：
1, meaningless power consumption：It is preceding already described, it is logical in the magnet exciting coil of conventional A.C. contactor in actuation and sticking stage
With " identical " AC voltages, keep holding power excessive, causes meaningless electric energy loss；
2, it generates heat：Disastrous effect caused by meaningless electric energy loss is " heating fever ", when serious, or even can be burnt conventional
The magnet exciting coil of A.C. contactor；
3, there are annoying AC noises.
For critical defect existing for regular alternating current contactor, the technical staff in electronics, electrical apparatus industry studies, devises
A variety of " electricity-saving circuits ", " electricity-saving appliance ", " energy saving ac contactor " for improving regular alternating current contactor performance --- it is following
It is referred to as " prior art ".
The above-mentioned prior art is the performance for improving regular alternating current contactor really, has made beneficial exploration and has achieved
Certain achievement, but generally existing defect below：" transient voltage (voltagetransient) " is not set and restrains measure, is not had
The function of " restraining transient voltage ".
It is electronic to will produce the very high self-induction of voltage value in startup or shutdown moment for the load of A.C. contactor such as motor
Gesture (self induction electromotive force) --- hereafter referred to collectively as " transient voltage ".Because described is " existing
Have technology " " transient voltage " supression measure is not set, so, " transient voltage " can scurry into " existing skill by AC control sources port
In " energy saving ac contactor " of art " meaning, the devices such as capacitance therein, thyristor may therefore punch through damage！
Rest on paper here it is " energy saving ac contactor " majority of prior art meaning, fresh the reason of obtaining application it
One.
For the present situation of regular alternating current contactor and the prior art, present invention target to be achieved is：" applying electronic skill
Art is rebuild traditional industry ", design a kind of electronic circuit is simple as possible, device used is few as possible, price is cheap as possible,
Performance be more than the prior art, can be with the pulse A.C. contactor of transient voltage " and can restrain " of efficient electricity-saving.
Invention content
It is a kind of and the pulse A.C. contactor of transient voltage can be restrained, including by movable contact MC, normally-closed contact NC, normally opened
The regular alternating current contactor and electronic unit 100 that contact NO, dynamic iron core M, static iron core G, resetting spring F, magnet exciting coil L are formed
Two parts, it is characterised in that：The electronic unit 100 by transient voltage suppressor TVS, AC-DC conversion circuit 101,
Single pulse occurs circuit 102, switching circuit 103, bridge circuit 104, reduction voltage circuit 105 and forms, wherein the transient electrical
It is oppressive that diode TVS processed is in parallel with the AC-DC conversion circuits 101, one end is connected with the ends P1 of AC voltages, is another
End is connected with the ends P2 of AC voltages；The D/C voltage that the AC-DC conversion circuits 101 export is Vcc；The single arteries and veins
3 ends that circuit 102 occurs for punching are connected with the anode of Vcc voltage, 4 ends are connected with 5 ends of switching circuit 103；Described opens
6 ends on powered-down road 103 are connected with the ends DC2 of bridge circuit 104；The P1 at the ends AC1 and AC voltages of the bridge circuit 104
End is connected, the ends DC1 are connected with the ends A1 of the magnet exciting coil L, the ends DC2 are connected with the ends A2 of the magnet exciting coil L
It connects；7 ends of the reduction voltage circuit 105 are connected with the ends AC2 of the bridge circuit 104；The AC-DC conversion electricity
It is respective that circuit 102, switching circuit 103, reduction voltage circuit 105 occur for the negative terminal and single pulse for the D/C voltage Vcc that road 101 exports
One end is connected with the ends P2 of AC voltages.
The electronic unit 100 is combined by manner discussed above with regular alternating current contactor, you can group cost hair
Bright signified " and the pulse A.C. contactor of transient voltage can be restrained ".
The single pulse occurs circuit 102 and may be used a variety of circuit structures, the preferred one kind below of the present invention：
It is made of first resistor R1, second resistance R2, the first capacitance C1, time-base integrated circuit IC, 3 ends, 4 ends；Wherein, 3 ends and institute
The anode for the D/C voltage Vcc that the AC-DC conversion circuits 101 stated export is connected；One end of first resistor R1 is connected with 3 ends,
The other end is connected with one end of the first capacitance C1, one end of second resistance R2,6 feet of time-base integrated circuit IC, 2 feet；Collection
It is connected with 3 ends at 8 feet of time base circuit IC, 4 feet, 3 feet are connected with 4 ends；The other end of the first capacitance C1,
The other end of two resistance R2,1 foot of time-base integrated circuit IC are connected with the ends P2 of AC voltages.
The operating characteristic that circuit 102 occurs for the single pulse is：In the A.C. contactor actuation, sticking, answer
In the work period of position, single pulse is only exported, also, be attracted the stage in the A.C. contactor, when described integrated
3 feet of base IC circuit export high level, are the time domain of the single pulse its " accounting for ".
In circuit 102 occurs for the single pulse, base electricity when the time-base integrated circuit IC selections 555 are integrated
Road, according to its operating characteristic, 555 time-base integrated circuits can be replaced with triode, integrated operational amplifier；
The switching circuit 103 may be used a variety of circuit structures, the preferred circuit structure below of the present invention：Its by
3rd resistor R3, the 5th diode D5, field-effect tube FET (Field Effect Transistor, FET), 5 ends, 6 ends composition；
Wherein, described one end 3rd resistor R3 is connected with 5 ends, and the other end is connected with the gate of the field-effect tube FET；
The drain electrode of effect pipe FET is connected with the cathode of the 5th diode D5, source electrode is connected with the ends P2 with AC voltages；The
The anode of five diode D5 is connected with 6 ends.
The field-effect tube FET can use for example unidirectional thyratron transistor (Silicon of other switching devices
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), static induction thyristor (Static Induction
Thyristor, SITH) or switching transistor replacement.
The bridge circuit 104 may be used a variety of circuit structures, the preferred circuit structure below of the present invention：Its by
First diode D1, the second diode D2, third diode D3, the 4th ends diode D4, AC1, the ends AC2, the ends DC1, the ends DC2 group
At, wherein the cathode of the first diode D1, the positive of the second diode D2 are connected with the ends AC1；Third diode D3 is just
Pole, the positive of the first diode D1 are connected with the ends DC2；Cathode, the cathode of the 4th diode D4 of second diode D2 is equal
It is connected with the ends DC1；The cathode of third diode D3, the anode of the 4th diode D4 are connected with the ends AC2.
The reduction voltage circuit 105 can also use a variety of circuit structures, the preferred circuit structure below of the present invention：Its
It is made of the second capacitance C2,7 ends；Also, the second described one end capacitance C2 is connected with 7 ends, the other end and AC are electric
The ends P2 of pressure are connected.
Using the present invention, following advantageous effect can be obtained：
1, efficient electricity-saving：
In order to illustrate the efficient electric energy of the present invention, we have done following test：
(1), the power consumption of regular alternating current contactor is first surveyed：3201 type A.C. contactors of commercially available CJX2-：For 4.7W；
(2), it is surveyed again by technical scheme of the present invention：3201 type A.C. contactors of above-mentioned commercially available CJX2-add the present invention's
The power consumption for the present invention signified " and the pulse A.C. contactor of transient voltage can be restrained " that electronic unit 100 forms：
For 0.3W；
The result of actual measurement shows that compared with 3201 type A.C. contactors of commercially available CJX2-, electric energy of the invention can
Up to 93.6%.
2, quiet nothing is made an uproar：
Quietness is without audible noise when signified " and can restrain the pulse A.C. contactor of transient voltage " of the invention runs.
3201 type A.C. contactors of commercially available CJX2-have the AC noise of apparent audible when running.
3, low-heat is run：The present invention has the function of efficient electricity-saving, has saved electric energy, certainty low-heat when operation.
4, material is saved：Using the present invention, the number of turns of magnet exciting coil L can be reduced.Actual measurement shows will be above-mentioned commercially available
The number of turns of the magnet exciting coil L of 3201 type A.C. contactors of CJX2-removes 800 circles, the present invention it is signified " and transient electrical can be restrained
The pulse A.C. contactor of pressure " can still keep the excellent performance of " efficient electricity-saving, quiet nothing are made an uproar, low-heat is run ".Play this hair
This bright advantage can make A.C. contactor reduce the consumption of expensive enamel covered wire.
5, have the function of restraining transient voltage, the present invention can be protected from the damage of transient voltage, thus, it is ensured that this
Invention is run reliably and with long-term.
In brief：With the application of the invention, the A.C. contactor of manufacture " energy saving, consumption reduction, noise elimination, reliability service " can be innovated.
Description of the drawings
Fig. 1 is the fundamental diagram of regular alternating current contactor；
Fig. 2 is the principle of the present invention block diagram；
Fig. 3 is the circuit diagram of embodiment 1；
Fig. 4 a are AC voltage oscillograms；
Fig. 4 b are the timing chart that single pulse occurs that circuit 102 exports.
Specific implementation mode
Below in conjunction with the accompanying drawings, illustrate embodiments of the present invention.
Fig. 2 is the principle of the present invention block diagram, and Fig. 3 is the circuit diagram of embodiment 1.In Fig. 2：L connects for regular alternating current
Magnet exciting coil in tentaculum, A1, A2 are its two connectivity ports；Dashed rectangle 100 indicates the electronic unit 100 of the present invention.
In conjunction with Fig. 1, Fig. 2；It is a kind of and the pulse A.C. contactor of transient voltage can be restrained, including by movable contact MC, often
The regular alternating current contactor that closed contact NC, normally opened contact NO, dynamic iron core M, static iron core G, resetting spring F, magnet exciting coil L are formed
And 100 liang of parts of electronic unit, it is characterised in that：The electronic unit 100 is by transient voltage suppressor TVS, AC-
DC conversion circuits 101, single pulse occur circuit 102, switching circuit 103, bridge circuit 104, reduction voltage circuit 105 and form,
In, the transient voltage suppressor TVS and the AC-DC conversion circuits 101 be in parallel, one end and AC voltages
The ends P1 are connected, the other end is connected with the ends P2 of AC voltages；The D/C voltage that the AC-DC conversion circuits 101 export is
Vcc；3 ends that circuit 102 occurs for the single pulse are connected with the anode of Vcc voltage, 5 ends at 4 ends and switching circuit 103
It is connected；6 ends of the switching circuit 103 are connected with the ends DC2 of bridge circuit 104；The bridge circuit 104
The ends AC1 are connected with the ends P1 of AC voltages, the ends DC1 are connected with the ends A1 of the magnet exciting coil L, the ends DC2 are encouraged with described
The ends A2 of magnetic coil L are connected；7 ends of the reduction voltage circuit 105 are connected with the ends AC2 of the bridge circuit 104；Institute
The negative terminal and single pulse for the D/C voltage Vcc that the AC-DC conversion circuits 101 stated export occur circuit 102, switching circuit 103,
105 respective one end of reduction voltage circuit is connected with the ends P2 of AC voltages.
The electronic unit 100 is combined by manner discussed above with regular alternating current contactor, you can group cost hair
Bright signified " and the pulse A.C. contactor of transient voltage can be restrained ".
In conjunction with Fig. 3：In embodiment 1：
First resistor R1, second resistance R2, the first capacitance C1, time-base integrated circuit IC, 3 ends, 4 ends constitute the present embodiment
Circuit 102 occurs for 1 single pulse；Wherein, the anode for the D/C voltage Vcc that 3 ends are exported with the AC-DC conversion circuits 101
It is connected；One end of first resistor R1 is connected with 3 ends, one end of the other end and the first capacitance C1, one end of second resistance R2,
6 feet, 2 feet of time-base integrated circuit IC are connected；8 feet, 4 feet of time-base integrated circuit IC are connected with 3 ends, 3 feet and 4 ends
It is connected；The other end of first capacitance C1, the other end of second resistance R2, time-base integrated circuit IC 1 foot and AC
The ends P2 of voltage are connected.
The time-base integrated circuit IC selects 555 time-base integrated circuits, and according to its operating characteristic, described 555 is integrated
Time base circuit can be replaced with triode, integrated operational amplifier.
3rd resistor R3, the 5th diode D5, field-effect tube FET, 5 ends, 6 ends constitute the switching circuit of the present embodiment 1
103；Wherein, described one end 3rd resistor R3 is connected with 5 ends, and the other end is connected with the gate of the field-effect tube FET
It connects；The drain electrode of field-effect tube FET is connected with the cathode of the 5th diode D5, source electrode is connected with the ends P2 with AC voltages
It connects；The anode of 5th diode D5 is connected with 6 ends.
The personnel of this profession should understand：The field-effect tube FET can use for example unidirectional crystal of other switching devices
Thyratron, two-way thyratron transistor, insulated gate bipolar transistor, electron injection enhancement gate transistor, static induction thyristor
Or switching transistor replaces.
First diode D1, the second diode D2, third diode D3, the 4th ends diode D4, AC1, the ends AC2, DC1
End, the ends DC2 constitute the bridge circuit 104 of the present embodiment 1；Wherein, the cathode of the first diode D1, the second diode D2 be just
Extremely it is connected with the ends AC1；The anode of third diode D3, the positive of the first diode D1 are connected with the ends DC2；Two or two
The cathode of pole pipe D2, the 4th diode D4 cathode be connected with the ends DC1；Cathode, the 4th diode of third diode D3
The anode of D4 is connected with the ends AC2.
In the present embodiment 1, the first diode D1, the second diode D2, third diode D3, the 4th diode
D4, using integrated rectified current raise.
Second capacitance C2,7 ends constitute the reduction voltage circuit 105 of the present embodiment 1；Wherein, the second described one end capacitance C2
It is connected with 7 ends, the other end is connected with the ends P2 of AC voltages.
In conjunction with Fig. 3, Fig. 4 a, Fig. 4 b：
When t=t1, AC Voltage On states, 101 output dc voltage Vcc of AC-DC conversion circuits.At this point, the first both ends capacitance C1
2 feet of voltage, that is, time-base integrated circuit IC, the 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 domains, the D/C voltage Vcc of the AC-DC conversion circuits 101 output passes through R1 pairs of first resistor the
One capacitance C1 charges, and the voltage Vi on the first capacitance C1 constantly rises.
When to t=t3, the voltage Vi ＞ 2/ on 6 feet of voltage, that is, time-base integrated circuit IC on the first capacitance C1,2 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 6 feet of voltage, that is, time-base integrated circuit IC in t3~t4 time domains, the first capacitance C1,2 feet is still
For Vi ＞ 2/3Vcc ＞ 1/3Vcc states, the voltage V3 on 3 feet of time-base integrated circuit IC is still low level, remains as V3 ≈ 0
State.
From the analysis above, we can see that：Voltage V3 on 3 feet of time-base integrated circuit IC is：T1~t3 time domains, for pulse account for when
Domain is high level；T3~t4 time domains are the time domain of pulse sky, are low level.Its impulse waveform is indicated by Fig. 4 b.
According to above analysis, in conjunction with Fig. 3, Fig. 4 a, Fig. 4 b, in the following, illustrating the course of work of the present embodiment 1：
1, it is attracted：
When t=t1, AC Voltage On states, the V3 is high level, and field-effect tube is triggered after 3rd resistor R3 partial pressures
FET is connected.AC voltages are that the present embodiment 1 provides " being attracted power " by field-effect tube FET.
P1 be just, P2 be negative AC voltage positive half cycles, the electric current i in magnet exciting coil L is along the ends P1-AC1-D2-
The path of the ends the DC1-A1-magnet exciting coil L-A2-ends DC2-6 ends-D5-field-effect tube FET-P2 is circulated, and described encourages
Magnetic coil L charging energy-storings.
Dynamic iron core M is started " be attracted and start " by the effect of electromagnetic force caused by magnet exciting coil L.
P1 be bear, P2 is positive AC voltage negative half periods, the 5th diode D5 cut-offs.Due in the magnet exciting coil L
Electric current i cannot be mutated, will continue to circulate along following two paths --- claim " afterflow " or magnet exciting coil L electric discharge to release
Energy：First paths：A1-magnet exciting coil L-A2-the ends the DC2-ends the D1-AC1-ends D2-DC1-A1；Second paths：
A1-magnet exciting coil L-A2-the ends the DC2-ends the D3-AC2-ends D4-DC1-A1.Dynamic iron core M is produced by " afterflow " electric current
The action of " be attracted and start " is done in the effect of raw electromagnetic force and continuing.
When t=t2, dynamic iron core M is closed with static iron core G, described " and the pulse ac contactor of transient voltage can be restrained
Device " completes attracting process and enters the sticking stage.
2, sticking：
In t2~t3 time domains, V3 is still high level, and the field-effect tube FET continues to be connected；When to t=t3, V3 becomes
For low level, the field-effect tube FET shutdowns.The electric current i of this t2~t3 time domain plays " simultaneous to restrain wink described in consolidation
The effect of the pulse A.C. contactor of time variant voltage " attracting state.
In conjunction with Fig. 3, after the field-effect tube FET is turned off in t=t3, AC voltages are after the second capacitance C2 decompressions
Described " and can restrain the pulse A.C. contactor of transient voltage " provides holding power.
In t3~t4 time domains：
When AC voltages be P1 be just, P2 be negative positive half cycle when, " holding current " i in magnet exciting coil L is along P1-AC1
End-the ends the D2-DC1-ends the DC2-- A1-magnet exciting coil L-A2 end-second of the ends D3-AC2-7 capacitance C2 (decompression)-P2
Path circulation；
When AC voltages be P1 be bear, P2 is positive negative half period when, " holding current " i in magnet exciting coil L is along P2-
Two capacitance C2 (the decompression)-ends the 7 ends-AC2-ends the D4-DC1-A1-magnet exciting coil L-A2-ends DC2-ends D1-AC1-
It circulates in the path of P1.
The value of the second capacitance C2 need only be adjusted, so that it may " holding current " or " holding power " is adjusted, with two under reaching
Purpose：
(1), make described " and the pulse A.C. contactor of transient voltage can be restrained " the reliable sticking；
(2), above-mentioned first purpose is realized with alap " holding power ".
3, it resets
When t=t4, AC voltages turn off, and " holding current " i in magnet exciting coil L is along A1-magnet exciting coil L-A2-DC2
End-the ends the D1-AC1-ends the D2-DC1-A1 and A1-magnet exciting coil L-A2-ends the DC2-ends D3-AC2-D4-DC1
Bis- paths of end-A1 " afterflow " are simultaneously gradually reduced to zero, described " and can restrain the pulse A.C. contactor of transient voltage "
It resets.
When t=t5, AC voltages reclose, and the present embodiment 1 is signified " and can be restrained the pulse exchange of transient voltage and connect
Tentaculum " is once again powered up, reenter " actuation ", " sticking ", Reset work period in.
Known in summary：
1, the operating characteristic that circuit 102 occurs for the single pulse is：The A.C. contactor actuation, sticking,
In the work period of reset, single pulse is only exported, also, the working condition of the A.C. contactor is by " the list
Pulse " controls：It is attracted the stage in the A.C. contactor, 3 feet of the time-base integrated circuit IC export high level, for institute
The time domain of the single pulse stated its " accounting for "；In the A.C. contactor sticking stage, 3 feet of the time-base integrated circuit IC
Low level is exported, is the time domain of the single pulse its " sky ".
2, the bridge circuit 104 has both two kinds of functions in the present invention, and first, rectification function：It will be in magnet exciting coil L
Current rectification become direct current；Second, afterflow function：" afterflow " path is provided for the electric current in magnet exciting coil L.
In conjunction with Fig. 2, Fig. 3：One of feature of present invention is：It is equipped with transient voltage suppressor in the input terminal of AC voltages
TVS.The transient voltage suppressor TVS plays the role of inhibiting external " transient voltage ".If by being generated when being struck by lightning
Transient voltage or A.C. contactor load such as motor start-up, shutdown when self induction electromotive force generate transient voltage alter
In the electronic unit 100 for entering the present invention, device such as time-base integrated circuit IC, field-effect among the electronic unit 100
Pipe FET may breakdown damage.After the input terminal setting transient voltage suppressor TVS of AC voltages, when outside is scurried into
" transient voltage " voltage value be higher than the transient voltage suppressor TVS breakdown voltage when, be equivalent to short circuit,
The electronic unit 100 of the present invention is just protected.
Technical scheme of the present invention is explained above, all do not depart from the replacement of the essence of technical scheme of the present invention, all
It should be in the scope of the claims of the present invention.
Claims (2)
1. a kind of and the pulse A.C. contactor of transient voltage can be restrained, including by movable contact, normally-closed contact, normally opened contact,
Two part of regular alternating current contactor and electronic unit that dynamic iron core, static iron core, resetting spring, magnet exciting coil are formed, feature
It is：By transient voltage suppressor, AC-DC conversion circuits, single pulse circuit, switch occur for the electronic unit
Circuit, bridge circuit, reduction voltage circuit composition；Wherein, the transient voltage suppressor and the AC-DC conversion electricity
Road is in parallel, one end is connected with the ends P1 of AC voltages, the other end is connected with the ends P2 of AC voltages；The AC-DC conversions
The D/C voltage of circuit output is Vcc；3 ends that circuit occurs for the single pulse are connected with the anode of Vcc voltage, 4 ends with
5 ends of switching circuit are connected；6 ends of the switching circuit are connected with the ends DC2 of bridge circuit；The bridge circuit
The ends AC1 be connected with the ends P1 of AC voltages, the ends DC1 are connected with the ends A1 of the magnet exciting coil, the ends DC2 are encouraged with described
The ends A2 of magnetic coil are connected；7 ends of the reduction voltage circuit are connected with the ends AC2 of the bridge circuit；Described
It is respective that circuit, switching circuit, reduction voltage circuit occur for the negative terminal and single pulse of the D/C voltage Vcc of AC-DC conversion circuits output
One end is connected with the ends P2 of AC voltages；
Circuit occurs for the single pulse by first resistor, second resistance, the first capacitance, time-base integrated circuit, 3 ends, 4 end groups
At；Wherein, the anode for the D/C voltage Vcc that 3 ends are exported with the AC-DC conversion circuits is connected；One end of first resistor with
3 ends are connected, and the other end is connected with one end of the first capacitance, one end of second resistance, 6 feet of time-base integrated circuit, 2 feet
It connects；8 feet, 4 feet of time-base integrated circuit are connected with 3 ends, 3 feet are connected with 4 ends；The other end of first capacitance,
The other end of second resistance, 1 foot of time-base integrated circuit are connected with the ends P2 of AC voltages；
The switching circuit is made of 3rd resistor, the 5th diode, field-effect tube, 5 ends, 6 ends；Wherein, the third
Resistance one end is connected with 5 ends, and the other end is connected with the gate of the field-effect tube；Field-effect tube drain electrode with it is described
The cathode of 5th diode is connected, source electrode is connected with the ends P2 of AC voltages；The anode of 5th diode is connected with 6 ends；
The bridge circuit by the first diode, the second diode, third diode, the 4th diode, the ends AC1, the ends AC2,
The ends DC1, the ends DC2 composition, wherein the cathode of the first diode, the positive of the second diode are connected with the ends AC1；Three or two
The anode of pole pipe, the positive of the first diode are connected with the ends DC2；The cathode of the cathode of second diode, the 4th diode
It is connected with the ends DC1；The cathode of third diode, the positive of the 4th diode are connected with the ends AC2；
The reduction voltage circuit is made of the second capacitance, 7 ends；Also, the second described capacitance one end is connected with 7 ends
It connects, the other end is connected with the ends P2 of AC voltages；
Wherein, the power consumption of pulse A.C. contactor that is described and can restraining transient voltage is 0.3W, and electric energy is
93.6%.
2. pulse A.C. contactor according to claim 1 and that transient voltage can be restrained, it is characterised in that：Described
Time-base integrated circuit selects 555 time-base integrated circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610497451.XA CN106098472B (en) | 2016-06-25 | 2016-06-25 | And the pulse A.C. contactor of transient voltage can be restrained |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN106098472B true CN106098472B (en) | 2018-09-14 |
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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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| CN106098472A (en) | 2016-11-09 |
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Address after: 315200 Huatai Lou 112, Miao Po Road, zhenbaoshan street, Zhenhai District, Ningbo, Zhejiang, 4B Applicant after: Ningbo City Zhenghai Hua Tai Electrical Appliances Co.,Ltd. Address before: 315200 Huatai Lou 112, Miao Po Road, zhenbaoshan street, Zhenhai District, Ningbo, Zhejiang, 4B Applicant before: NINGBO ZHENHAI HUATAI ELECTRIC APPLIANCE FACTORY |
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Effective date of registration: 20221202 Address after: No. 109, Jiajia South Road, Pukou Street, Shengzhou City, Shaoxing City, Zhejiang Province 312499 Patentee after: Zhejiang Daqi Electronics Co.,Ltd. Address before: 315200 Huatai Lou 112, Miao Po Road, zhenbaoshan street, Zhenhai District, Ningbo, Zhejiang, 4B Patentee before: Ningbo City Zhenghai Hua Tai Electrical Appliances Co.,Ltd. |