CN208507582U - A kind of relay and its degausser - Google Patents
A kind of relay and its degausser Download PDFInfo
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- CN208507582U CN208507582U CN201821177808.7U CN201821177808U CN208507582U CN 208507582 U CN208507582 U CN 208507582U CN 201821177808 U CN201821177808 U CN 201821177808U CN 208507582 U CN208507582 U CN 208507582U
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- relay
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- degaussing
- degausser
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Abstract
The utility model discloses a kind of relay and its degaussers, wherein degausser includes degaussing branch, dump load and switching device.Degaussing branch circuit parallel connection in the coil both ends of relay, can in demagnetization process absorbing coil remanent magnetism energy.When needing degaussing, by the shutdown of switching device so that the current supply circuit where coil disconnects, then the remanent magnetism at coil both ends is absorbed by above-mentioned degaussing branch.Due to joined accumulation energy type component capacitance in degausser, capacitor is enabled to store remanent magnetism energy, degaussing voltage is the sum of the voltage at capacitor both ends and the forward conduction voltage of backward dioded at this time, therefore, for the forward conduction voltage for being only backward dioded, can quick demagnetization, so as to by eliminate relay rebound phenomenon.In addition, the circuit structure is simple, at low cost, application scenarios are extensive.
Description
Technical field
The utility model relates to relay technical fields, more particularly to a kind of relay and its degausser.
Background technique
The relay that the utility model is mentioned is mechanical structure relay (band push rod), during movement and opening
Generate the build-in attribute that rebound is relay.Why generation rebound is because of following reasons: the elastic slice of substantially relay is
A kind of springs, and usually select the stronger material of elasticity with guarantee can spring plate there is certain restoring force so that
After coil blackout sound contact can quick disjunction quickly moved by push rod band spring plate, when movable touching when the coil is energized
Point generates violent collision when reaching stationary contact, and speed drops to zero within a very short time, generates great opposition, anti-to make
Firmly make elastic slice counter motion and separate moving contact again with stationary contact, generates primary rebound.At this point, due to follow current
In the presence of, can still keep " remanent magnetism " after coil blackout, when this remanent magnetism and coil are powered as, the suction for generating coil is deposited always
The rapid closing again after, sound contact separates, and coil suction is much larger than the restoring force of elastic slice, under static after repeatedly
Come, rebound phenomenon stops.
In some circuits, this rebound phenomenon can make the sound contact of relay generate electric arc or even be bonded together,
Relay and place circuit is caused to generate serious consequence.
In the prior art, in order to overcome this disadvantage, be typically employed in coil a both ends backward dioded in parallel or
Coil both ends one backward dioded of parallel connection and zener diode (backward dioded and zener diode be cascaded structure).Fig. 1
For a kind of degausser for relay that the prior art provides.As shown in Figure 1, one reversed two in parallel at the both ends of coil RLY
Pole pipe D1 increases a triode Q1 between coil RLY and ground, by the base stage input control signal to triode Q1, from
And control the conducting and disconnection of triode.When triode Q1 is disconnected, the inverse electromotive force clamper that the both ends coil RLY generate is in anti-
To the forward conduction voltage of diode D1, thus the problem of inhibiting rebound.But due to using backward dioded D1 as degaussing
When circuit, degaussing voltage is the forward conduction voltage of backward dioded D1, and degaussing voltage is low, and degaussing is slow.
It can be seen that how to accelerate the degaussing speed of coil, so that overcoming the problems, such as that relay knock-ons is art technology
Personnel's urgent problem to be solved.
Utility model content
The purpose of the utility model is to provide a kind of degaussers of relay, for accelerating the degaussing speed of coil, from
And overcomes the problems, such as relay and knock-on.In addition, the utility model also provides a kind of relay comprising the degausser.
In order to solve the above technical problems, the utility model provides a kind of degausser of relay, including it is parallel to relay
The degaussing branch at the coil both ends of device, dump load and switching device, the degaussing branch include the capacitor being connected in series and anti-
To diode, the dump load is parallel to the both ends of the capacitor, for absorbing the electric energy of the capacitor release, the switch
Device is set to the current supply circuit where the coil, for being turned on or off the current supply circuit according to switching signal.
Preferably, the dump load is specially bleeder resistance.
Preferably, the switching device is specially triode.
Preferably, the triode is specially NPN type triode, and the base stage of the NPN type triode is as the switch
The public affairs of the anode of the input terminal of signal, the collector of the NPN type triode and the coil and backward dioded composition
End connection altogether, the emitter ground connection of the NPN type triode.
Preferably, further include current-limiting resistance, the current-limiting resistance be set to the front end of the base stage of the NPN type triode with
Input terminal as the switching signal.
It preferably, further include divider resistance, one end of the divider resistance is connect with the base stage of the NPN type triode,
The other end of the divider resistance is connect with the emitter of the NPN type triode.
In order to solve the above technical problems, the utility model also provides a kind of relay, including relay ontology, further include on
State the degausser.
Degausser provided by the utility model, including degaussing branch, dump load and switching device, wherein degaussing
Branch circuit parallel connection in the coil both ends of relay, can in demagnetization process absorbing coil remanent magnetism energy.When needing degaussing, lead to
The shutdown of switching device is crossed so that the current supply circuit where coil disconnects, then the remanent magnetism at coil both ends is inhaled by above-mentioned degaussing branch
It receives.Due to joined accumulation energy type component capacitance in degausser, capacitor is enabled to store remanent magnetism energy, degaussing voltage is at this time
The sum of the voltage and the forward conduction voltage of backward dioded at capacitor both ends, therefore, compared to the forward direction for being only backward dioded
For conducting voltage, can quick demagnetization, so as to by eliminate relay rebound phenomenon.In addition, the circuit structure is simple, cost
Low, application scenarios are extensive.Finally, relay provided by the utility model, similarly has above-mentioned beneficial effect.
Detailed description of the invention
In order to illustrate more clearly of the utility model embodiment, letter will be done to attached drawing needed in the embodiment below
Single introduction, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of degausser for relay that the prior art provides；
Fig. 2 is a kind of circuit diagram of the degausser of relay provided by the embodiment of the utility model；
Fig. 3 is the circuit diagram of the degausser of another relay provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than all real
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art without making creative work, institute
The every other embodiment obtained, belongs to scope of protection of the utility model.
The core of the utility model is to provide a kind of degausser of relay, for accelerating the degaussing speed of coil, from
And overcomes the problems, such as relay and knock-on.In addition, the utility model also provides a kind of relay comprising the degausser.
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation
The utility model is described in further detail for mode.
Fig. 2 is a kind of circuit diagram of the degausser of relay provided by the embodiment of the utility model.As shown in Fig. 2, should
Degausser includes the degaussing branch for being parallel to the both ends coil RLY of relay, and dump load (passes through bleeder resistance R1 in Fig. 2
Realize) and switching device (being realized in Fig. 2 by triode Q1), degaussing branch include series connection capacitor C1 and reversed two pole
Pipe D1, dump load are parallel to the both ends of capacitor C1, and for the electric energy of Absorption Capacitance C1 release, switching device is set to coil
Current supply circuit where RLY, for being turned on or off current supply circuit according to switching signal.
It should be noted that the dump load in the present embodiment is all devices for referring to the electric energy of absorbing coil RLY,
For example, it may be resistance, in order to be distinguished with other resistance, also referred to as bleeder resistance R1.It releases it is understood that resistance is used as
Load, it is not only at low cost, and also response speed is also fast.It is understood that other kinds of device can also other than resistance
As dump load, this embodiment is not repeated.
As shown in Fig. 2, the both ends of coil RLY are respectively defined as first end and second end, first end and positive pole+VCC
Connection, second end is grounded by switching device, and when switch device conductive, the current supply circuit of coil RLY is conducting, works as switch
When device disconnects, the current supply circuit of coil RLY is to disconnect.When coil RLY current supply circuit conducting when, coil RLY obtain it is electric, this
When, if disconnecting current supply circuit, the counter electromotive force at the both ends coil RLY can be discharged by degaussing branch, this is with the prior art
It is identical.However, degaussing branch is unlike the prior art in the present embodiment.In addition to backward dioded D1 is (anti-in degaussing branch
It is connect to the anode of diode D1 with the second end of coil RLY, the cathode of backward dioded D1 is connect with one end of capacitor C1, electricity
The other end for holding C1 is connect with the first end of coil RLY), it further include a capacitor C1, the effect of capacitor C1 is for quickly inhaling
Energy that the remanent magnetism of take-up circle RLY generates and preservation, i.e., first charge, then released by dump load, i.e., discharge again, specific mistake
Journey is as follows:
Demagnetization process:
When needing the contact disjunction of relay sound, to switching device cut-off signals switching device is disconnected, at this point, line
It encloses RLY and generates inverse electromotive force and give capacitor C1 charging by backward dioded D1, it, can be with by remanent magnetism energy storage on capacitor C1
Understand, with the continuous transfer of remanent magnetism energy, the voltage of capacitor C1 can gradually rise, and coil RLY removes magnetoelectricity at this time
Pressure is the forward conduction voltage of backward dioded D1 and the sum of the voltage of capacitor C1, so as to effectively accelerate coil RLY degaussing
Speed avoids relay from knock-oning.In terms of existing technologies, the degaussing voltage of the coil RLY in the present embodiment is reversed two
On the basis of the forward conduction voltage of pole pipe D1, the voltage of capacitor C1 is increased, therefore, degaussing can be fast implemented.
Magnetization process:
When needing relay sound contact to be attracted, make switch device conductive to switch device conductive signal at this point, line
Enclose the current supply circuit conducting where RLY, there is electric current to pass through on coil RLY, and capacitor C1 is by dump load electric discharge, make its two
Side pressure difference is reduced to zero, guarantees in next degaussing, can continue to absorb remanent magnetism energy.
Degausser provided in this embodiment, including degaussing branch, dump load and switching device, wherein degaussing branch
Be parallel to the coil both ends of relay, can in demagnetization process absorbing coil remanent magnetism energy.When needing degaussing, by opening
The shutdown of device is closed so that the current supply circuit where coil disconnects, then the remanent magnetism at coil both ends is absorbed by above-mentioned degaussing branch.
Due to joined accumulation energy type component capacitance in degausser, capacitor is enabled to store remanent magnetism energy, degaussing voltage is electricity at this time
The sum of voltage and the forward conduction voltage of backward dioded for holding both ends, therefore, compared to the positive guide for being only backward dioded
Be powered pressure for, can quick demagnetization, so as to by elimination relay rebound phenomenon.In addition, the circuit structure is simple, cost
Low, application scenarios are extensive.
It is preferably carried out mode as one kind, the switching device in above-described embodiment is specially triode Q1.
It is understood that the switching tubes such as metal-oxide-semiconductor can also be used as switching device other than triode Q1.Relative to
For other devices, cost is relatively low by triode Q1, has Current amplifier effect.Conducting of the switching signal as control switch device
With the signal of shutdown, be need according to switching device type and determination, particular content those skilled in the art can know,
Repeats no more herein.
It is preferably carried out mode as one kind, triode Q1 is specially NPN type triode, and the base stage of NPN type triode is made
For the input terminal of switching signal, collector and the anode of coil RLY and backward dioded D1 of NPN type triode form public
End connection, the emitter ground connection of NPN type triode.
As shown in Fig. 2, triode Q1 is specially NPN type triode, then corresponding switching signal is low level or high level,
Specifically, switching signal is low level when degaussing, NPN type triode is turned off at this time, and when magnetizing, switching signal is high electricity
Flat, NPN type triode is connected at this time.
Fig. 3 is the circuit diagram of the degausser of another relay provided by the embodiment of the utility model.As shown in figure 3,
Degausser further includes current-limiting resistance R2, and current-limiting resistance R2 is set to the front end of the base stage of NPN type triode to believe as switch
Number input terminal.It is preferably carried out mode as one kind, further includes divider resistance R3, one end of divider resistance R3 and NPN type three
The base stage of pole pipe connects, and the other end of divider resistance R3 and the emitter of NPN type triode connect.
It needs to be selected according to circuit actual parameter it is understood that the resistance value of current-limiting resistance R2 and divider resistance R3 are chosen
It takes, this embodiment is not repeated.
Above-described embodiment of degausser in to(for) relay is described in detail.The utility model also provides a kind of packet
Relay containing the degausser.It is understood that the structure of relay ontology does not need to do any improvement, it therefore, can
Referring to the prior art.
Relay provided in this embodiment is released negative due to including degausser, degausser, including degaussing branch
Carry and switching device, wherein degaussing branch circuit parallel connection in the coil both ends of relay, can in demagnetization process absorbing coil it is surplus
Magnetic energy.When needing degaussing, by the shutdown of switching device so that the current supply circuit where coil disconnects, then coil both ends
Remanent magnetism is absorbed by above-mentioned degaussing branch.Due to joined accumulation energy type component capacitance in degausser, capacitor is stored
Remanent magnetism energy, degaussing voltage is the sum of the voltage at capacitor both ends and the forward conduction voltage of backward dioded at this time, therefore, is compared
For being only the forward conduction voltage of backward dioded, can quick demagnetization, so as to by eliminating relay rebound phenomenon.
Above to relay provided by the utility model and its degausser.In addition, the utility model also provides one kind
Relay comprising the degausser is described in detail.Each embodiment is described in a progressive manner in specification, often
What a embodiment stressed is the difference from other embodiments, the mutual coherent of the same or similar parts in each embodiment
See.For the device disclosed in the embodiment, since it is corresponded to the methods disclosed in the examples, so the comparison of description
Simply, reference may be made to the description of the method.It should be pointed out that for those skilled in the art,
Without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, these improvement
It is also fallen into the protection scope of the utility model claims with modification.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (7)
1. a kind of degausser of relay, which is characterized in that the degaussing branch including being parallel to the coil both ends of relay is let out
Load and switching device are put, the degaussing branch includes the capacitor and backward dioded being connected in series, and the dump load is in parallel
In the both ends of the capacitor, for absorbing the electric energy of the capacitor release, the switching device is set to where the coil
Current supply circuit, for being turned on or off the current supply circuit according to switching signal.
2. degausser according to claim 1, which is characterized in that the dump load is specially bleeder resistance.
3. degausser according to claim 1, which is characterized in that the switching device is specially triode.
4. degausser according to claim 3, which is characterized in that the triode is specially NPN type triode, described
Input terminal of the base stage of NPN type triode as the switching signal, the collector of the NPN type triode and the coil and
The common end connection of the anode composition of the backward dioded, the emitter ground connection of the NPN type triode.
5. degausser according to claim 4, which is characterized in that it further include current-limiting resistance, the current-limiting resistance setting
In the NPN type triode base stage front end using the input terminal as the switching signal.
6. degausser according to claim 5, which is characterized in that it further include divider resistance, the one of the divider resistance
End is connect with the base stage of the NPN type triode, and the emitter of the other end of the divider resistance and the NPN type triode connects
It connects.
7. a kind of relay, including relay ontology, which is characterized in that further include as claimed in any one of claims 1 to 6 go
Magnetic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821177808.7U CN208507582U (en) | 2018-07-24 | 2018-07-24 | A kind of relay and its degausser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821177808.7U CN208507582U (en) | 2018-07-24 | 2018-07-24 | A kind of relay and its degausser |
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| Publication Number | Publication Date |
|---|---|
| CN208507582U true CN208507582U (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821177808.7U Active CN208507582U (en) | 2018-07-24 | 2018-07-24 | A kind of relay and its degausser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2018
- 2018-07-24 CN CN201821177808.7U patent/CN208507582U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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