CN209169053U - A kind of twin coil control relay circuit - Google Patents
A kind of twin coil control relay circuit Download PDFInfo
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- CN209169053U CN209169053U CN201822131699.1U CN201822131699U CN209169053U CN 209169053 U CN209169053 U CN 209169053U CN 201822131699 U CN201822131699 U CN 201822131699U CN 209169053 U CN209169053 U CN 209169053U
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Abstract
The utility model discloses a kind of twin coil control relay circuits comprising electrode input end IN+, negative input IN-, RC differential circuit D, metal-oxide-semiconductor switching circuit M, double-wound relay J and two-way Transient Suppression Diode TVS1；The one end two-way Transient Suppression Diode TVS1 is connected with the metal-oxide-semiconductor Q1 source electrode of metal-oxide-semiconductor switching circuit M, and the two-way Transient Suppression Diode TVS1 other end is connected with the metal-oxide-semiconductor Q1 of metal-oxide-semiconductor switching circuit M drain electrode.The utility model is avoided that metal-oxide-semiconductor Q1 is breakdown in a kind of twin coil control relay circuit switching electric moment and damages.
Description
Technical field
The utility model relates to relay fields, particularly relate to a kind of twin coil control relay circuit.
Background technique
In order to reduce the energy consumption of relay, general control relay circuit is all first attracted using high current trigger relay,
Then the attracting state of relay is maintained with low current.Wherein double-wound relay using the trigger winding of a small resistance value come
Trigger relay is attracted, and maintains relay to be attracted with the maintenance coil of one big resistance value；Cooperate shown in Fig. 1, at present twin coil
Control relay circuit includes electrode input end IN+ ', negative input IN- ', RC differential circuit D ' and metal-oxide-semiconductor switching circuit M '
With double-wound relay J '；Wherein double-wound relay J ' has trigger winding Rt ', maintains coil Rh ', public foot COM ', touching
It sends out foot TC ', maintain foot HC ', output contact A ' and output contact B ', output contact A ' and output contact B ' by trigger winding Rt '
With maintenance coil Rh ' control；Public foot COM ' is connected with the one end trigger winding Rt ' and maintenance one end coil Rh ', triggers foot TC '
It is connected with the trigger winding Rt ' other end, foot HC ' is maintained to be connected with the coil Rh ' other end is maintained；Electrode input end IN+ ' and cathode
Input terminal IN- ' is for accessing DC power supply；RC differential circuit D ' includes capacitor C1 ' and resistance R1 ', metal-oxide-semiconductor switching circuit
M ' includes resistance R2 ' and metal-oxide-semiconductor Q1 '；Electrode input end IN+ ' is connected with the one end capacitor C1 ' and public foot COM ', the anode
Input terminal IN+ ' can be connected by diode D1 ' with the common end of capacitor C1 ' and public foot COM ', diode D1 ' anode with
Electrode input end IN+ ' is connected, and the cathode of diode D1 ' is connected with the common end of capacitor C1 ' and public foot COM '；Capacitor C1 ' is another
One end is connected with the one end resistance R1 ' and the one end resistance R2 ', negative input IN- ' and the resistance R1 ' other end, metal-oxide-semiconductor Q1 ' source electrode
It is connected with maintenance foot HC ', the resistance R2 ' other end is connected with metal-oxide-semiconductor Q1 ' grid, and metal-oxide-semiconductor Q1 ' drain electrode is connected with triggering foot TC '.
In this way when the moment of electrode input end IN+ ' and negative input IN- ' access DC power supply, both current this twin coil
Control relay circuit is powered moment, and coil Rh ' is maintained to be powered on, capacitor C1 ' metal-oxide-semiconductor to metal-oxide-semiconductor Q1 ' gate charges
Q1 ' conducting, due to the presence of resistance R1 ', so that metal-oxide-semiconductor Q1 ' grid voltage declines always, when metal-oxide-semiconductor Q1 ' grid voltage declines
To before being insufficient to allow metal-oxide-semiconductor Q1 ' to be connected, metal-oxide-semiconductor Q1 ' is connected and trigger winding Rt ' is powered on；In trigger winding
Under Rt ' and maintenance coil Rh ' collective effect, output contact A ' and output contact B ' are attracted；When metal-oxide-semiconductor Q1 ' grid voltage declines
To when metal-oxide-semiconductor Q1 ' being insufficient to allow to be connected, metal-oxide-semiconductor Q1 ' is disconnected, and trigger winding Rt ' is powered off and stopped working, and maintains coil at this time
Rh ' is still powered on work, and in the case where maintaining coil Rh ' effect, double-wound relay J ' keeps attracting state；After this, two-wire
Circle control relay circuit power-off then maintains coil Rh ' to power off and stop working, output contact A ' and output contact B ' release.
But this double-wound relay control circuit has the following problems at present:
This double-wound relay control circuit maintains coil Rh ' and trigger winding Rt ' to be powered and produce in the moment that is powered
Raw inverse electromotive force, so that triggering foot TC ' and maintenance foot HC ' moment form high pressure, the drain electrode and source electrode due to metal-oxide-semiconductor Q1 ' point
It is not connected with triggering foot TC ' and maintenance foot HC ', at this time trigger winding Rt ' and the reversed electricity for maintaining coil Rh ' energization moment to generate
It is breakdown and damage that kinetic potential may cause metal-oxide-semiconductor Q1 '；And it is maintained in this double-wound relay control circuit in shutdown transient
Coil Rh ' is powered off and is generated inverse electromotive force, so that foot HC ' moment is maintained to form high pressure, maintains coil Rh ' shutdown transient at this time
The inverse electromotive force of generation may also cause metal-oxide-semiconductor Q1 ' breakdown and damage.Thus this double-wound relay control circuit is deposited
It may cause that metal-oxide-semiconductor Q1 ' is breakdown and the risk damaged in switching electric moment.
Utility model content
The purpose of this utility model is to provide a kind of twin coil control relay circuits, are avoided that metal-oxide-semiconductor Q1
It is breakdown in twin coil control relay circuit switching electric moment and damage.
In order to achieve the above objectives, the solution of the utility model is:
A kind of twin coil control relay circuit comprising electrode input end IN+, negative input IN-, RC differential
Circuit D, metal-oxide-semiconductor switching circuit M and double-wound relay J；Wherein double-wound relay J has trigger winding Rt, maintains coil
Rh, public foot COM, triggering foot TC, maintain foot HC, output contact A and output contact B, output contact A and output contact B by touching
Hair line circle Rt and maintenance coil Rh control, public foot COM are connected with the one end trigger winding Rt and maintenance one end coil Rh, trigger foot
TC is connected with the trigger winding Rt other end, and foot HC is maintained to be connected with the coil Rh other end is maintained；RC differential circuit D includes capacitor C1
With resistance R1, metal-oxide-semiconductor switching circuit M includes resistance R2 and metal-oxide-semiconductor Q1；Electrode input end IN+ and the one end capacitor C1 and public foot
COM is connected, and the capacitor C1 other end is connected with the one end resistance R1 and the one end resistance R2, negative input IN- and the resistance R1 other end,
Metal-oxide-semiconductor Q1 source electrode is connected with maintenance foot HC, and the resistance R2 other end is connected with metal-oxide-semiconductor Q1 grid, metal-oxide-semiconductor Q1 drain electrode and triggering foot TC
It is connected；Wherein a kind of twin coil control relay circuit further includes two-way Transient Suppression Diode TVS1, described
The one end two-way Transient Suppression Diode TVS1 is connected with metal-oxide-semiconductor Q1 source electrode, the two-way Transient Suppression Diode TVS1 other end and MOS
Pipe Q1 drain electrode is connected.
A kind of twin coil control relay circuit further includes two-way Transient Suppression Diode TVS2, two-way wink
State inhibits the one end diode TVS2 to be connected with the drain electrode of metal-oxide-semiconductor Q1, the two-way Transient Suppression Diode TVS2 other end and public foot
COM is connected.
The drain electrode of the metal-oxide-semiconductor Q1 is connected by diode D2 with triggering foot TC, anode and the triggering foot TC of diode D2
It is connected, the cathode of diode D2 is connected with the drain electrode of metal-oxide-semiconductor Q1.
A kind of twin coil control relay circuit further includes zener diode ZD1 and capacitor C2, pressure stabilizing two
Pole pipe ZD1 cathode is connected with the one end capacitor C2 and metal-oxide-semiconductor Q1 grid, zener diode ZD1 anode and the capacitor C2 other end and MOS
Pipe Q1 source electrode is connected.
After adopting the above scheme, when a kind of twin coil control relay circuit is in the moment that is powered, maintenance line
Circle Rh and trigger winding Rt is powered and generates inverse electromotive force, so that triggering foot TC and maintenance foot HC moment form high pressure, this
Shi Shuanxiang Transient Suppression Diode TVS1 can drain to metal-oxide-semiconductor Q1 and source voltage carries out clamper, so that metal-oxide-semiconductor Q1 be avoided to be touched
Hair line circle Rt and the inverse electromotive force breakdown for maintaining coil Rh energization moment to generate；When a kind of twin coil relay
Control circuit powers off in shutdown transient, the maintenance coil Rh and generates inverse electromotive force, so that foot HC moment is maintained to be formed
High pressure, two-way Transient Suppression Diode TVS1 can drain to metal-oxide-semiconductor Q1 at this time and source voltage carries out clamper, to avoid MOS
Pipe Q1 is maintained the inverse electromotive force breakdown of coil Rh shutdown transient generation；Thus the utility model is avoided that metal-oxide-semiconductor Q1 in institute
A kind of twin coil control relay circuit switching stated electric moment is breakdown and damages.
Detailed description of the invention
Fig. 1 is the schematic diagram of existing double-wound relay control circuit；
Fig. 2 is the principles of the present invention figure.
Specific embodiment
In order to which the technical solution of the utility model is explained further, below by specific embodiment come to the utility model into
Row elaborates.
As shown in Fig. 2, the utility model discloses a kind of twin coil control relay circuit comprising anode input
Hold IN+, negative input IN-, RC differential circuit D, metal-oxide-semiconductor switching circuit M and double-wound relay J；Wherein twin coil relay
Device J has trigger winding Rt, maintains coil Rh, public foot COM, triggering foot TC, maintains foot HC, output contact A and output contact
B, output contact A and output contact B are by trigger winding Rt and maintain coil Rh control, public foot COM and the one end trigger winding Rt
It is connected with maintenance one end coil Rh, triggering foot TC is connected with the trigger winding Rt other end, maintains foot HC and maintains coil Rh another
End is connected；Electrode input end IN+ and negative input IN- is for accessing DC power supply；RC differential circuit D includes capacitor C1
With resistance R1, metal-oxide-semiconductor switching circuit M includes resistance R2 and metal-oxide-semiconductor Q1；Electrode input end IN+ and the one end capacitor C1 and public foot
COM is connected, and the capacitor C1 other end is connected with the one end resistance R1 and the one end resistance R2, negative input IN- and the resistance R1 other end,
Metal-oxide-semiconductor Q1 source electrode is connected with maintenance foot HC, and the resistance R2 other end is connected with metal-oxide-semiconductor Q1 grid, metal-oxide-semiconductor Q1 drain electrode and triggering foot TC
It is connected.Wherein the electrode input end IN+ is connected by diode D1 with the common end of capacitor C1 and public foot COM, diode
The anode of D1 is connected with electrode input end IN+, and the cathode of diode D1 is connected with the common end of capacitor C1 and public foot COM.
The key of the utility model is: a kind of twin coil control relay circuit further includes two-way transient state
Inhibit diode TVS1, described one end two-way Transient Suppression Diode TVS1 is connected with metal-oxide-semiconductor Q1 source electrode, and two-way transient state inhibits two
The pole pipe TVS1 other end is connected with metal-oxide-semiconductor Q1 drain electrode.In this way when a kind of twin coil control relay circuit is logical
Electric moment maintains coil Rh and trigger winding Rt to be powered and generate inverse electromotive force, so that triggering foot TC and maintenance foot HC wink
Between form high pressure, at this time two-way Transient Suppression Diode TVS1 can to metal-oxide-semiconductor Q1 drain and source voltage carry out clamper, to keep away
Exempt from metal-oxide-semiconductor Q1 be triggered coil Rt and maintain coil Rh be powered moment generate inverse electromotive force breakdown；When described one kind is new
Type double-wound relay control circuit powers off in shutdown transient, the maintenance coil Rh and generates inverse electromotive force, so that dimension
Holding foot HC moment forms high pressure, and two-way Transient Suppression Diode TVS1 can drain to metal-oxide-semiconductor Q1 at this time and source voltage clamp
Position, so that the inverse electromotive force for avoiding metal-oxide-semiconductor Q1 from being maintained the generation of coil Rh shutdown transient punctures；Thus the utility model can be kept away
It is breakdown in a kind of twin coil control relay circuit switching electric moment and damage to exempt from metal-oxide-semiconductor Q1.
Further, a kind of twin coil control relay circuit further includes two-way Transient Suppression Diode
TVS2, the one end two-way Transient Suppression Diode TVS2 are connected with the drain electrode of metal-oxide-semiconductor Q1, and two-way Transient Suppression Diode TVS2 is another
End is connected with public foot COM；Transient Suppression Diode TVS2 two-way in this way can carry out clamper to metal-oxide-semiconductor Q1 drain voltage, thus
Avoid metal-oxide-semiconductor Q1 be triggered coil Rt be powered moment generate inverse electromotive force breakdown.
Further, a kind of twin coil control relay circuit further includes zener diode ZD1 and capacitor C2,
Zener diode ZD1 cathode is connected with the one end capacitor C2 and metal-oxide-semiconductor Q1 grid, and zener diode ZD1 anode and capacitor C2 are another
End is connected with metal-oxide-semiconductor Q1 source electrode；Just metal-oxide-semiconductor Q1 grid voltage can be clamped by zener diode ZD1 and capacitor C2 in this way
Position and protect metal-oxide-semiconductor Q1.
Further, the drain electrode of the metal-oxide-semiconductor Q1 is connected by diode D2 with triggering foot TC, anode and the touching of diode D2
It sends out foot TC to be connected, the cathode of diode D2 is connected with the drain electrode of metal-oxide-semiconductor Q1；In this way when metal-oxide-semiconductor Q1 is used with parasitic diode
When metal-oxide-semiconductor, diode D2 can end the inverse electromotive force for maintaining coil Rh shutdown transient to generate by metal-oxide-semiconductor Q1 to trigger winding
Rt and maintenance coil Rh charging, so as to shorten the release time of double-wound relay J.
The product form and style of above-described embodiment and schema and non-limiting the utility model, any technical field
The appropriate changes or modifications that those of ordinary skill does it all should be regarded as the patent category for not departing from the utility model.
Claims (4)
1. a kind of twin coil control relay circuit comprising electrode input end IN+, negative input IN-, RC differential electricity
Road D, metal-oxide-semiconductor switching circuit M and double-wound relay J；Wherein double-wound relay J have trigger winding Rt, maintain coil Rh,
Public foot COM, triggering foot TC, maintain foot HC, output contact A and output contact B, output contact A and output contact B by firing line
Enclose Rt and maintain coil Rh control, public foot COM and the one end trigger winding Rt and the one end coil Rh is maintained to be connected, trigger foot TC and
The trigger winding Rt other end is connected, and foot HC is maintained to be connected with the coil Rh other end is maintained；RC differential circuit D includes capacitor C1 and electricity
R1 is hindered, metal-oxide-semiconductor switching circuit M includes resistance R2 and metal-oxide-semiconductor Q1；Electrode input end IN+ and the one end capacitor C1 and public foot COM phase
Even, the capacitor C1 other end is connected with the one end resistance R1 and the one end resistance R2, negative input IN- and the resistance R1 other end, metal-oxide-semiconductor
Q1 source electrode is connected with maintenance foot HC, and the resistance R2 other end is connected with metal-oxide-semiconductor Q1 grid, and metal-oxide-semiconductor Q1 drain electrode is connected with triggering foot TC；
It is characterized by: a kind of twin coil control relay circuit further includes two-way Transient Suppression Diode TVS1, institute
The one end two-way Transient Suppression Diode TVS1 is stated to be connected with metal-oxide-semiconductor Q1 source electrode, the two-way Transient Suppression Diode TVS1 other end with
Metal-oxide-semiconductor Q1 drain electrode is connected.
2. a kind of twin coil control relay circuit as described in claim 1, it is characterised in that: further include two-way transient state
Inhibit diode TVS2, the one end two-way Transient Suppression Diode TVS2 is connected with the drain electrode of metal-oxide-semiconductor Q1, and two-way transient state inhibits two poles
The pipe TVS2 other end is connected with public foot COM.
3. a kind of twin coil control relay circuit as claimed in claim 1 or 2, it is characterised in that: the metal-oxide-semiconductor Q1
Drain electrode be connected by diode D2 with triggering foot TC, diode D2 it is positive with trigger foot TC and be connected, the cathode of diode D2
It is connected with the drain electrode of metal-oxide-semiconductor Q1.
4. a kind of twin coil control relay circuit as described in claim 1, it is characterised in that: further include two pole of pressure stabilizing
Pipe ZD1 and capacitor C2, zener diode ZD1 cathode are connected with the one end capacitor C2 and metal-oxide-semiconductor Q1 grid, and zener diode ZD1 is just
Pole is connected with the capacitor C2 other end and metal-oxide-semiconductor Q1 source electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822131699.1U CN209169053U (en) | 2018-12-18 | 2018-12-18 | A kind of twin coil control relay circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822131699.1U CN209169053U (en) | 2018-12-18 | 2018-12-18 | A kind of twin coil control relay circuit |
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| Publication Number | Publication Date |
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| CN209169053U true CN209169053U (en) | 2019-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822131699.1U Active CN209169053U (en) | 2018-12-18 | 2018-12-18 | A kind of twin coil control relay circuit |
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| CN (1) | CN209169053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114220624A (en) * | 2021-12-28 | 2022-03-22 | 安阳凯地磁力科技股份有限公司 | Quick-response low-temperature-rise explosion-proof electromagnet control circuit |
-
2018
- 2018-12-18 CN CN201822131699.1U patent/CN209169053U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114220624A (en) * | 2021-12-28 | 2022-03-22 | 安阳凯地磁力科技股份有限公司 | Quick-response low-temperature-rise explosion-proof electromagnet control circuit |
| CN114220624B (en) * | 2021-12-28 | 2023-10-27 | 安阳凯地磁力科技股份有限公司 | Quick response, low temperature rise explosion-proof electromagnet control circuit |
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