CN106252158A - A kind of electromagnetic relay circuit - Google Patents
A kind of electromagnetic relay circuit Download PDFInfo
- Publication number
- CN106252158A CN106252158A CN201610832259.1A CN201610832259A CN106252158A CN 106252158 A CN106252158 A CN 106252158A CN 201610832259 A CN201610832259 A CN 201610832259A CN 106252158 A CN106252158 A CN 106252158A
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- China
- Prior art keywords
- transistor
- electrode
- solenoid
- zener diode
- voltage
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Classifications
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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
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- Relay Circuits (AREA)
Abstract
The present invention provides a kind of electromagnetic relay circuit, including: solenoid, the first end of solenoid is connected with supply voltage by the first resistance；Transistor, first electrode of described transistor is connected with the second end of described solenoid, second electrode ground connection of described transistor, the 3rd electrode of described transistor is connected with control signal by the second resistance, and described control signal is for controlling the on or off of described transistor；And, the degausser being connected in parallel with solenoid, degausser includes clamp diode and the Zener diode being connected in series.The embodiment of the present invention is by increasing Zener diode in the degausser of solenoid, make the voltage that degaussing voltage is Zener diode and the voltage sum of clamp diode of solenoid, such that it is able to effectively accelerate relay coil degaussing speed, reduce contact by adhesive to the working time opened；This circuit structure is simple, reliable and low cost, it is possible to meet the QA application scenario of needs relay.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of electromagnetic relay circuit.
Background technology
In prior art, power supply and other electric equipments generally use DC coil electromagnetic relay.This DC coil electromagnetism
The operation principle of relay is mainly: as long as at coil two ends plus certain voltage, will pass through certain electric current in coil,
Thus producing galvanomagnetic-effect, internal switch contact under the effect of electromagnetic force, will overcome the pulling force of spring, carries out adhesive or releases
The action put.When, after coil blackout, coil current is zero, electromagnetic force disappears, and contact can recover original position under the action of the spring
Put.
Relay contact switching time, need certain movement time, the control signal of foregoing circuit be high level adhesive,
Low level discharges.Relay contact from adhesive to release process, required time is longer, it is impossible to apply be switched fast at needs dynamic
The occasion made.
Summary of the invention
It is an object of the invention to provide a kind of electromagnetic relay circuit, solve prior art repeat circuit contact from suction
The problem that time required during closing release is longer.
In order to achieve the above object, the embodiment of the present invention provides a kind of electromagnetic relay circuit, including:
Solenoid, the first end of described solenoid is connected with supply voltage by the first resistance；
Transistor, described transistor includes the first electrode, the second electrode and the 3rd electrode；First electrode of described transistor
Being connected with the second end of described solenoid, the second electrode ground connection of described transistor, the 3rd electrode of described transistor passes through
Second resistance and a control signal connect, and described control signal is for controlling the on or off of described transistor；And,
The degausser being connected in parallel with described solenoid, described degausser includes the clamp diode being connected in series
And Zener diode；
Wherein, the positive pole of described clamp diode is connected with the positive pole of Zener diode, the negative pole of clamp diode and electricity
First end of magnetic coil connects, and the negative pole of Zener diode is connected with the second end of solenoid；Or,
The negative pole of described clamp diode is connected with the negative pole of Zener diode, the positive pole of clamp diode and solenoid
Second end connect, the positive pole of Zener diode is connected with the first end of solenoid.
Wherein, described transistor is bipolar transistor or field-effect transistor；
When transistor is bipolar transistor, the first electrode of described transistor is colelctor electrode, the of described transistor
Two electrodes are emitter stage, and the 3rd electrode of described transistor is base stage；Wherein, described colelctor electrode and the second of described solenoid
End connects, described grounded emitter, and described base stage is connected with described control signal by the second resistance；
When transistor is field-effect transistor, the first electrode of described transistor is drain electrode, the second of described transistor
Electrode is source electrode, and the 3rd electrode of described transistor is grid；Wherein, described drain electrode connects with the second end of described solenoid
Connecing, described source ground, described grid is connected with described control signal by the second resistance.
Wherein, described Zener diode is a target Zener diode；Or,
Described Zener diode is made up of the discrete Zener diode of multiple series connection；Wherein,
The voltage stabilizing value of target Zener diode is equal with the voltage stabilizing value sum of the multiple discrete Zener diode of series connection.
Wherein, the voltage stabilizing value of described target Zener diode less than described transistor the first electrode to the second electrode
Big reversely blanking voltage；Or,
The voltage stabilizing value sum of the multiple discrete Zener diode of series connection is electric to second less than the first electrode of described transistor
The maximum reverse blanking voltage of pole.
Wherein, when described control signal is low level signal, described transistor turns off；When described control signal is high electricity
During ordinary mail, described transistor turns.
Wherein, described electromagnetic relay circuit also includes:
Electric capacity with the first resistor coupled in parallel；When it is turned on, described capacitive charge storage；When described transistor
During shutoff, the electric capacity of described electric capacity release storage.
Wherein, described solenoid includes: coil, spring and contact；Wherein,
Coil electricity produce electromagnetic force when it is turned on, under the effect of electromagnetic force, described contact overcomes institute
The pulling force stating spring jumps to the second position from primary importance；When described transistor turns off, coil blackout and electromagnetic force disappear,
Described contact returns to primary importance under the effect of described spring.
Wherein, when described transistor turns off, the polarity of voltage of described solenoid occurs to change generation inverse electromotive force,
Puncture described Zener diode；And the sense of current of described solenoid is constant, the reverse degaussing voltage of the most described solenoid
Magnitude of voltage and the magnitude of voltage sum of described Zener diode for described clamp diode.
The technique scheme of the present invention at least has the advantages that
In the electromagnetic relay circuit of the embodiment of the present invention, by increasing voltage stabilizing two pole in the degausser of solenoid
Pipe so that the voltage that degaussing voltage is Zener diode of solenoid and the voltage sum of clamp diode, such that it is able to have
Effect accelerates relay coil degaussing speed, reduces contact by adhesive to the working time opened；This circuit structure simple, reliable and
Low cost, it is possible to meet the QA application scenario of needs relay.
Accompanying drawing explanation
Fig. 1 represents one of electrical block diagram of electromagnetic relay circuit that the embodiment of the present invention provides；
Fig. 2 represents the two of the electrical block diagram of the electromagnetic relay circuit that the embodiment of the present invention provides.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
As shown in Figure 1 and Figure 2, the embodiment of the present invention provides a kind of electromagnetic relay circuit, including:
Solenoid L, first end of described solenoid L is connected with supply voltage+V by the first resistance R1；
Transistor Q1, described transistor Q1 include three electrodes, the respectively first electrode, the second electrode and the 3rd electrode；
First electrode of described transistor Q1 is connected with second end of described solenoid L, the second electrode ground connection of described transistor Q1,
3rd electrode of described transistor Q1 is connected by the second resistance R2 and a control signal, described in described control signal is used for controlling
The on or off of transistor Q1；And,
The degausser being connected in parallel with described solenoid L, described degausser includes clamper two pole being connected in series
Pipe D1 and Zener diode Z1.
As shown in Figures 1 and 2, the concrete annexation of degausser is: the positive pole of clamp diode D1 and voltage stabilizing two pole
The positive pole of pipe Z1 connects, and the negative pole of clamp diode D1 is connected with first end of solenoid L, the negative pole of Zener diode Z1 and
Second end of solenoid L connects.
Or, the concrete annexation of degausser is: the negative pole of clamp diode D1 and the negative pole of Zener diode Z1
Connecting, the positive pole of clamp diode D1 is connected with second end of solenoid L, the positive pole of Zener diode Z1 and solenoid L
First end connect.This kind of connected mode is the most not shown.In short, clamp diode D1 and voltage stabilizing two in Fig. 1 and Fig. 2
The position of pole pipe Z1 can exchange, a kind of connected mode being not limited in Fig. 1 and Fig. 2.
In the above embodiment of the present invention, on the clamp diode D1 of solenoid L, increase stabilivolt Z1 and go here and there with it
Connection；When transistor Q1 disconnects, owing to coil is inductive element, its electric current can not suddenly change, and still maintains primary current direction, but coil
Polarity of voltage can change, and becomes the backward voltage in opposite direction with supply voltage and (occurs as shown in Figures 1 and 2 to turn
Voltage after change is into lower just upper negative).When backward voltage reaches the voltage of Zener diode, then can puncture Zener diode, this
Time coil reverse degaussing voltage be VZ1+VD1, i.e. degaussing voltage increases, then reduction relay release time.
Concrete, as it is shown in figure 1, during the normal adhesive of relay, flow through solenoid and audion Q1 electric current be stable state electricity
Stream I1, coil voltage is upper just lower negative.Relay release moment, relay coil produces inverse electromotive force, punctures voltage stabilizing two pole
Pipe Z1, the sense of current is identical, and flowing through coil, zener diode Z1 and diode D1 electric current is I2；Now by VZ1+VD1Voltage
Degaussing, quick release coil energy, degaussing voltage is the highest, can substantially accelerate relay rate of release.
It should be noted that described transistor is bipolar transistor or field-effect transistor；Wherein, bipolar transistor
Three electrodes of pipe are colelctor electrode, base electrode and emitter stage；Three electrodes of field-effect transistor are source electrode, grid and drain electrode.
Specifically, bipolar transistor is audion, and field-effect transistor is metal-oxide-semiconductor.The most above-mentioned transistor Q1 be audion or
Field effect transistor M osfet.
Concrete, as shown in Figures 1 and 2, when transistor is bipolar transistor, the first electrode of described transistor is
Colelctor electrode c, the second electrode of described transistor is emitter e, and the 3rd electrode of described transistor is base stage b；Wherein, described collection
Electrode c is connected with the second end of described solenoid, described emitter e ground connection, and described base stage b passes through the second resistance R2 with described
Control signal connects.
The (not shown) when transistor is field-effect transistor, the first electrode of described transistor is drain electrode d, described
Second electrode of transistor is source electrode s, and the 3rd electrode of described transistor is grid g；Wherein, described drain electrode d and described electromagnetism
Second end of coil connects, described source electrode s ground connection, and described grid g is connected with described control signal by the second resistance R2.
It should be noted that Zener diode Z1 can also be by identical electric pressure, unipolarity TVS (transient supression two pole
Pipe) substitute.
Concrete, Zener diode described in the above embodiment of the present invention is a target Zener diode；Or,
Described Zener diode is made up of the discrete Zener diode of multiple series connection；Wherein,
The voltage stabilizing value of target Zener diode is equal with the voltage stabilizing value sum of the multiple discrete Zener diode of series connection.
Zener diode in the above-mentioned electromagnetic relay circuit that the embodiment of the present invention provides can use a diode,
Can also ensure that total voltage uses multiple discrete Zener diode to connect in the case of constant；It is not especially limited at this.
In order to ensure will not to destroy audion Q1 when audion Q1 turns off, cause the damage of audion Q1.Although it is therefore steady
The voltage that pressure diode Z1 chooses is the highest, and relay is the shortest for release time, but target voltage stabilizing described in the embodiment of the present invention two
The voltage stabilizing value of pole pipe is less than the maximum reverse blanking voltage of first electrode to the second electrode of described transistor；Or, series connection
The voltage stabilizing value sum of multiple discrete Zener diodes is cut less than the maximum reverse of first electrode to the second electrode of described transistor
Only voltage.
Specifically, when transistor is audion, the voltage stabilizing value of described target Zener diode is less than described audion
The maximum reverse blanking voltage of current collection best emitter stage；Or, the voltage stabilizing value sum of the multiple discrete Zener diode of series connection
Maximum reverse blanking voltage less than the current collection best emitter stage of described audion.I.e. when audion Q1 turns off, audion c-e
End maximum reverse blanking voltage not can exceed that specification maximum；The i.e. total voltage of the Zener diode in this electromagnetic relay circuit
Can not be more than the Vc-emax of audion.
When transistor is metal-oxide-semiconductor, the voltage stabilizing value of described target Zener diode draining to source electrode less than this metal-oxide-semiconductor
Maximum reverse blanking voltage；Or, the voltage stabilizing value sum of the multiple discrete Zener diode of series connection is less than the drain electrode of this metal-oxide-semiconductor extremely
The maximum reverse blanking voltage of source electrode.
Concrete, the shutoff of transistor Q1 or conducting, by control signal control, are i.e. low level letter when described control signal
Number time, described transistor Q1 turn off；When described control signal is high level signal, described transistor Q1 turns on.
Further, electromagnetic relay circuit described in the embodiment of the present invention also includes:
The electric capacity (not shown) in parallel for resistance R1 with first；When described transistor Q1 turns on, described electric capacity stores
Electric charge；When described transistor Q1 turns off, the electric capacity of described electric capacity release storage.
The embodiment of the present invention is current-limiting resistor voltage divider R1 shunt capacitance, on the basis of ensureing effective adhesive, can drop
When low Q1 opens, reduce the supply current of relay steady operation, reduce idling consumption.
It is also preferred that the left solenoid L described in the above embodiment of the present invention includes: coil, spring and contact；Wherein,
Coil electricity produce electromagnetic force when it is turned on, under the effect of electromagnetic force, described contact overcomes institute
The pulling force stating spring jumps to the second position from primary importance；When described transistor turns off, coil blackout and electromagnetic force disappear,
Described contact returns to primary importance under the effect of described spring.
Concrete, in the above embodiment of the present invention when described transistor turns off, the polarity of voltage of described solenoid
Occur to change and produce inverse electromotive force, puncture described Zener diode；And the sense of current of described solenoid is constant, then described
The magnitude of voltage that reverse degaussing voltage is described clamp diode of solenoid and the magnitude of voltage sum of described Zener diode.
To sum up, the embodiment of the present invention, by increasing the degaussing voltage of relay coil, increases degaussing speed, reduces contact
Time required for release.When i.e. Q1 turns off, by relay coil inverse electromotive force, puncture stabilivolt, relay coil
Voltage clamp adds diode drop to stabilivolt voltage, by the demagnetization quick to coil of this voltage, accelerates relay contact
Rate of release.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of without departing from principle of the present invention, it is also possible to make some improvements and modifications, these improvements and modifications are also
Should be regarded as protection scope of the present invention.
Claims (8)
1. an electromagnetic relay circuit, it is characterised in that including:
Solenoid, the first end of described solenoid is connected with supply voltage by the first resistance；
Transistor, described transistor includes the first electrode, the second electrode and the 3rd electrode；First electrode of described transistor and institute
The second end stating solenoid connects, the second electrode ground connection of described transistor, and the 3rd electrode of described transistor passes through second
Resistance and a control signal connect, and described control signal is for controlling the on or off of described transistor；And,
The degausser being connected in parallel with described solenoid, described degausser includes that the clamp diode being connected in series is with steady
Pressure diode；
Wherein, the positive pole of described clamp diode is connected with the positive pole of Zener diode, the negative pole of clamp diode and electromagnetic wire
First end of circle connects, and the negative pole of Zener diode is connected with the second end of solenoid；Or, bearing of described clamp diode
Pole is connected with the negative pole of Zener diode, and the positive pole of clamp diode is connected with the second end of solenoid, Zener diode
Positive pole is connected with the first end of solenoid.
Electromagnetic relay circuit the most according to claim 1, it is characterised in that described transistor be bipolar transistor or
Person's field-effect transistor；
When transistor is bipolar transistor, the first electrode of described transistor is colelctor electrode, the second electricity of described transistor
Extremely emitter stage, the 3rd electrode of described transistor is base stage；Wherein, described colelctor electrode connects with the second end of described solenoid
Connecing, described grounded emitter, described base stage is connected with described control signal by the second resistance；
When transistor is field-effect transistor, the first electrode of described transistor is drain electrode, the second electrode of described transistor
For source electrode, the 3rd electrode of described transistor is grid；Wherein, described drain electrode is connected with the second end of described solenoid, institute
Stating source ground, described grid is connected with described control signal by the second resistance.
Electromagnetic relay circuit the most according to claim 1, it is characterised in that described Zener diode is that a target is steady
Pressure diode；Or,
Described Zener diode is made up of the discrete Zener diode of multiple series connection；Wherein,
The voltage stabilizing value of target Zener diode is equal with the voltage stabilizing value sum of the multiple discrete Zener diode of series connection.
Electromagnetic relay circuit the most according to claim 3, it is characterised in that the voltage stabilizing value of described target Zener diode
Maximum reverse blanking voltage less than first electrode to the second electrode of described transistor；Or,
The voltage stabilizing value sum of the multiple discrete Zener diode of series connection is less than the first electrode of described transistor to the second electrode
Maximum reverse blanking voltage.
Electromagnetic relay circuit the most according to claim 1, it is characterised in that when described control signal is low level signal
Time, described transistor turns off；When described control signal is high level signal, described transistor turns.
Electromagnetic relay circuit the most according to claim 1, it is characterised in that described electromagnetic relay circuit also includes:
Electric capacity with the first resistor coupled in parallel；When it is turned on, described capacitive charge storage；When described transistor turns off
Time, the electric capacity of described electric capacity release storage.
Electromagnetic relay circuit the most according to claim 1, it is characterised in that described solenoid includes: coil, spring
And contact；Wherein,
Coil electricity produce electromagnetic force when it is turned on, under the effect of electromagnetic force, described contact overcomes described bullet
The pulling force of spring jumps to the second position from primary importance；When described transistor turns off, coil blackout and electromagnetic force disappear, described
Contact returns to primary importance under the effect of described spring.
Electromagnetic relay circuit the most according to claim 1, it is characterised in that when described transistor turns off, described electricity
The polarity of voltage of magnetic coil occurs to change generation inverse electromotive force, punctures described Zener diode；And the electricity of described solenoid
Flow path direction is constant, the magnitude of voltage that reverse degaussing voltage is described clamp diode of the most described solenoid and described voltage stabilizing two pole
The magnitude of voltage sum of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610832259.1A CN106252158A (en) | 2016-09-19 | 2016-09-19 | A kind of electromagnetic relay circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610832259.1A CN106252158A (en) | 2016-09-19 | 2016-09-19 | A kind of electromagnetic relay circuit |
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| CN106252158A true CN106252158A (en) | 2016-12-21 |
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| CN201610832259.1A Pending CN106252158A (en) | 2016-09-19 | 2016-09-19 | A kind of electromagnetic relay circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134391A (en) * | 2017-06-07 | 2017-09-05 | 北京新能源汽车股份有限公司 | A kind of control relay circuit and automobile |
| CN107473031A (en) * | 2017-07-17 | 2017-12-15 | 江苏科技大学 | A kind of gateway doorway machine, which is swiped the card, opens the door and calls the circuit and implementation method of elevator |
| CN109036960A (en) * | 2018-08-08 | 2018-12-18 | 江苏固德威电源科技股份有限公司 | A kind of relay driving control circuit |
| CN109130858A (en) * | 2018-09-25 | 2019-01-04 | 北京新能源汽车股份有限公司 | A kind of the DC to DC converter starting control circuit and automobile of electric car |
| CN110265262A (en) * | 2019-05-31 | 2019-09-20 | 昂宝电子（上海）有限公司 | Driving circuit and quick demagnetizing method for inductive relay |
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| CN107134391A (en) * | 2017-06-07 | 2017-09-05 | 北京新能源汽车股份有限公司 | A kind of control relay circuit and automobile |
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