CN106816344B - A kind of electronic type intermediate relay - Google Patents
A kind of electronic type intermediate relay Download PDFInfo
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- CN106816344B CN106816344B CN201710166516.7A CN201710166516A CN106816344B CN 106816344 B CN106816344 B CN 106816344B CN 201710166516 A CN201710166516 A CN 201710166516A CN 106816344 B CN106816344 B CN 106816344B
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- normally
- contact
- control module
- normally opened
- closed
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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
-
- 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
- H01H47/002—Monitoring or fail-safe circuits
- H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
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- Relay Circuits (AREA)
- Keying Circuit Devices (AREA)
Abstract
A kind of electronic type intermediate relay, belongs to relay technical field.Including trigger signal input terminal and by trigger signal drive actions contact, it is characterised in that：The contact is provided with multigroup, each group includes a normally opened contact and a normally-closed contact, normally opened contact and normally-closed contact include the controllable type power electronic devices or/and circuit for being provided with control terminal, it is additionally provided with normally opened contact control module and normally-closed contact control module, the trigger signal input terminal connects the input terminal of normally opened contact control module and normally-closed contact control module simultaneously, and the output end of normally opened contact control module and normally-closed contact control module is separately connected the control terminal of normally opened contact and normally-closed contact.In this electronic type intermediate relay, realize in contact and contact to include normally opened contact and normally-closed contact simultaneously by electronic circuit.
Description
Technical field
A kind of electronic type intermediate relay, belongs to relay technical field.
Background technology
Intermediate relay is the common electrical components of industry spot, and main function is to be with automatically controlling in relay protection
In system, to increase the quantity of contact, capacity and for transmitting M signal in control circuit.It is intermediate in the prior art after
Electric appliance is generally conventional mechanical structure, mainly by secured core, dynamic iron core, spring, movable contact, stationary contact, coil, wiring
The part such as terminal and shell forms, and main operational principle is：When the making alive on relay coil, and equal to or more than action
When voltage, armature is just sucked against by electromagnetic attraction on iron core, and contact chip is under the promotion of armature top plate, contacting, disconnection
Or conversion, by control circuit, when relay coil is powered down or voltage drop is low to less than return voltage, armature is in contact chip
Effect is lower to return to origin-location.
Due to mainly realizing its action by mechanical structure inside intermediate relay in the prior art, deposit when in use
In power attenuation, and when coil is run, there is noise generation, and noise bigger when armature has dirt.When load current is larger
It is easy to burn contact so that contact can not discharge in time.When main contacts band, which carries, to be discharged, electric arc sparking is easy tod produce, together
When mechanical structure intermediate relay service life it is shorter.
In the prior art, as electronic technology is especially silicon-controlled continuous development, also occur some profits on the market
The product that contact opening and closing function is completed in similar intermediate relay is realized with electronic circuit, wherein more mature product has solid-state
Relay, Contactless contactor etc..Its basic principle is：Utilize electronic component（Such as switching transistor, bidirectional triode thyristor is partly led
Body device）Switching characteristic, with achieving the purpose that contactless no-spark make-and-break contact, to play similar " electronics
The left and right of switch ".But the product generally existing of " electronic switch " class has following defect in the prior art：Existing " electronic cutting
There are one universal of pass " class products（Or one group）Normally opened contact, i.e., after the voltage of input terminal reaches trigger condition, output
The on off state at end becomes closed state from on-state, therefore can not be used under the operating mode for needing normally-closed contact.It is existing simultaneously
" electronic switch " the class product having is larger by electric current because of to carry, therefore volume is larger, even if not needing normally closed touch
In the case of point, can not also conventional intermediate mechanical relay be replaced to use.
Invention content
The technical problem to be solved by the present invention is to：A kind of realized by electronic circuit is overcome the deficiencies of the prior art and provide to touch
Include the electronic type intermediate relay of normally opened contact and normally-closed contact in point and contact simultaneously.
The technical solution adopted by the present invention to solve the technical problems is：The electronic type intermediate relay, including triggering letter
Number input terminal and the contact by trigger signal drive actions, it is characterised in that：The contact is provided with multigroup, each group of packet
A normally opened contact and a normally-closed contact are included, normally opened contact and normally-closed contact include the controllable type electric power for being provided with control terminal
Electronic device or/and circuit are additionally provided with normally opened contact control module and normally-closed contact control module, the trigger signal
Input terminal connects the input terminal of normally opened contact control module and normally-closed contact control module simultaneously, normally opened contact control module with
And the output end of normally-closed contact control module is separately connected the control terminal of normally opened contact and normally-closed contact.
Preferably, the normally-closed contact control module uses output end to be realized for the closed type optocoupler of closed state.
Preferably, the normally opened contact control module uses output end to be realized for the open type optocoupler of off-state.
Preferably, it is provided with the forced resetting module that the manually implemented normally opened contact and normally-closed contact reset, is forced multiple
The output end in the normally opened contact control module and normally-closed contact control module is arranged in position module.
Preferably, the forced resetting module is one group of linked switch manually controlled, normally opened tactile in linked switch
Point is connected in parallel between two terminals of normally-closed contact control module output end, and the normally-closed contact in linked switch is connected on normally opened
At any one terminals of contact control module output end.
Preferably, the output end in closed state is connected in parallel on the two of normally-closed contact in the normally-closed contact control module
It between terminals and is formed into a loop, the control terminal of the normally-closed contact is connected in parallel in the circuit simultaneously.
Preferably, the output end being off in the normally opened contact control module is connected in parallel on the two of normally opened contact
It between terminals and is formed into a loop, the control terminal of the normally opened contact is connected in parallel in the circuit simultaneously.
Preferably, it is additionally provided with Power Entry Module, the trigger signal of DC form is directly accessed power input mould
The input terminal of block, the trigger signal of form of communication is by being arranged the rectification circuit access electricity in Power Entry Module input terminal
The output end of the input terminal of source input module, Power Entry Module connects normally opened contact control module and normally-closed contact control simultaneously
The input terminal of molding block.
Preferably, it is provided with for normally opened contact control module and often in the output end of the Power Entry Module
The input of closed contact control module stablizes the regulator circuit of trigger signal and is used to indicate the instruction electricity that trigger signal is sent into state
Road.
Compared with prior art, advantageous effect possessed by the present invention is：
1, in this electronic type intermediate relay, by electronic circuit realize in contact and contact simultaneously including normally opened contact and
Normally-closed contact.Since this electronic type intermediate relay all realizes the basic function of intermediate relay by electronic component, because
This completely avoid existing intermediate mechanical relay using when there are power attenuation, and when coil is run, has noise to generate
Defect, what is more important substantially prolong service life due to no mechanical construction of switch.
2, in this electronic type intermediate relay, while the function of normally opened contact and normally-closed contact is realized, fundamentally solved
The drawbacks of having determined in the prior art similar to cannot achieve normally-closed contact in the product of " electronic switch ", therefore can substitute completely existing
There is the intermediate mechanical relay in technology.It simultaneously can be in parallel simultaneously multigroup identical tactile at the both ends of trigger signal input terminal
Power Generation Road, to realize the break-make of multigroup contact.
3, in the circuit of this electronic type intermediate relay, circuit structure is simple, therefore can be substantially reduced actual product
Volume is advantageously implemented this electronic type intermediate relay to contribute to the size according to conventional intermediate relay to be realized
With the direct replacement of conventional mechanical formula intermediate relay.
4, by the way that forced resetting module is arranged, when its contact is not normally multiple after trigger signal disappears for intermediate relay
Position, can make the contact not resetted in intermediate relay return to reset condition by force by stirring the poke rod of forced resetting.
5, by setting Power Entry Module, it can be adapted for the occasion that trigger signal is direct current signal and AC signal,
Application range is wider.
Description of the drawings
Fig. 1 is electronic type intermediate relay functional-block diagram.
Fig. 2 is 1 electronic type intermediate relay circuit diagram of embodiment.
Fig. 3 is 2 electronic type intermediate relay circuit diagram of embodiment.
Fig. 4 is 3 electronic type intermediate relay circuit diagram of embodiment.
Fig. 5 is 4 electronic type intermediate relay circuit diagram of embodiment.
Specific implementation mode
Fig. 1 ~ 2 are highly preferred embodiment of the present invention, and 1 ~ 5 the present invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in Figure 1, a kind of electronic type intermediate relay, including it is Power Entry Module, normally opened contact control module, normally closed
Contact control module, normally opened contact module and normally-closed contact module, power input simultaneously with normally opened contact control module and
The input terminal of normally-closed contact control module is connected, the output end of normally opened contact control module and normally-closed contact control module respectively with
Normally opened contact module is connected with the input terminal of normally-closed contact module.
After trigger signal is sent into Power Entry Module, trigger signal is sent into normally opened contact by Power Entry Module respectively
The input terminal of control module and normally-closed contact control module, when normally opened contact control module receives Power Entry Module feeding
After trigger signal, state output terminal changes, and further the on-state of driving normally opened contact changes, at this time
The on off state of normally opened contact module changes from disconnected to closed；The control signal of Power Entry Module output is sent into normally closed touch simultaneously
Point control module, after normally-closed contact control module receives the trigger signal of Power Entry Module feeding, output end shape
State changes, and further the on-state of driving normally-closed contact module changes, at this time the on off state of normally-closed contact
It is gone off by closure.
In the control circuit of this electronic type intermediate relay as shown in Figure 2, terminal V+ and terminal V- are respectively to trigger
The input anode of signal and input cathode, cathode, the integrated chip U1 of shunt regulator tube D1 respectively after terminal V+ series resistances R5
Input anode and resistance R6 one end, the plus earth of voltage-stabiliser tube D1, the other end series connection light emitting diode D2 of resistance R6
After be grounded.One end of the anode and resistance R7 of the input cathode of integrated chip U1 while integrated chip U2 in parallel, resistance R7's
The input cathode of the other end and integrated chip U2 are grounded simultaneously.
The output cathode of integrated chip U1 while one end of parallel connection bidirectional thyristor W1 and capacitance C1, capacitance C1's is another
Hold after series resistance R1 one end of the other end of bidirectional thyristor W1 in parallel and resistance R2 simultaneously, the other end of resistance R2 with
And the control terminal of bidirectional thyristor W1 connects the output negative pole of integrated chip U1 simultaneously.The output cathode of integrated chip U2 is simultaneously simultaneously
Join one end of bidirectional thyristor W2 and capacitance C2, bidirectional thyristor in parallel simultaneously after the other end series resistance R3 of capacitance C2
The other end of W2 and one end of resistance R4, the other end of resistance R4 and the control terminal of bidirectional thyristor W2 connect integrated simultaneously
The output negative pole of chip U3.
Resistance R5 ~ R6, voltage-stabiliser tube D1 and light emitting diode D2 form above-mentioned Power Entry Module, when its input terminal has
When trigger signal inputs, trigger signal is through driving light emitting diode D2 to shine after voltage-stabiliser tube D1 voltage stabilizings, while to integrated chip
The input terminal of U1 ~ U2 inputs trigger signal.Integrated chip U1 and integrated chip U2 is respectively above-mentioned normally opened contact control module
With normally-closed contact control module, wherein integrated chip U1 is realized using commercially available common open type photoelectrical coupler, such as model
The chip of the models such as moc3063, moc3083, TLP160J, integrated chip U2 use commercially available common closed type photoelectrical coupler
Realize, such as model TLP4227G, PS7241E, 410EH model chip.Light emitting diode D2 can be used as indicator light setting
On the shell of actual product, the conducting state to this electronic type intermediate relay is contributed to show.
Resistance R1 ~ R2, capacitance C1 and bidirectional thyristor W1 form above-mentioned normally opened contact module, resistance R3 ~ R4, capacitance
C2 and bidirectional thyristor W2 forms above-mentioned normally-closed contact module.From the double-end terminals A1 and B1 of bidirectional thyristor W1
It is the terminals of the normally opened contact of this electronic type intermediate relay, is from the double-end terminals A2 and B2 of bidirectional thyristor W2
The terminals of the normally-closed contact of this electronic type intermediate relay.
Specific work process and operation principle are as follows：
When not loading trigger signal between terminal V+ and terminal V-, at this time if normally opened contact（Terminals A1 and B1）It
Between be loaded with load, load power source signal flows through resistance R2 through terminals A1 and enters the output end of integrated chip U1, due to collection
It is open type optocoupler at chip U1, therefore is off-state between its output end, so access is not formed in terminals A1 and B1,
At this time since the control terminal of bidirectional thyristor W1 does not input trigger signal, bidirectional thyristor W1 is cut-off state, so logical
Crossing bidirectional thyristor W1 realizes the function of this electronic type intermediate relay normally opened contact.
At this time if normally-closed contact（Terminals A2 and B2）Between be loaded with load, load power source signal is flowed through terminals A2
Through resistance R4 and enter the output end of integrated chip U2, since integrated chip U2 is closed type optocoupler, between output end
For closed state, so load power source signal passes through the output end of resistance R4 and integrated chip U2 from terminals successively at this time
B2 flows out, therefore forms access in terminals A2 and B2, forms the load power source signal of access while being sent into as trigger signal
The control terminal of bidirectional thyristor W2, therefore bidirectional thyristor W2 conductings, so realizing this electronic type by bidirectional thyristor W1
The function of intermediate relay normally-closed contact.
After loading trigger signal between terminal V+ and terminal V-, trigger signal simultaneously triggers integrated chip U1 ~ U2, this
When integrated chip U1 two output ends closed state is become from off-state, load power source signal flows through electricity through terminals A1 at this time
It hinders R2 and enters the output end of integrated chip U1, due to becoming conducting state between two output ends of integrated chip U1, bear
It carries power supply signal to flow out from terminals B1 by the output end of resistance R2 and integrated chip U1 successively, therefore in terminals A1
Access is formed with B1, form the load power source signal of access while being sent into the control terminal of bidirectional thyristor W1 as trigger signal,
Therefore bidirectional thyristor W1 conductings, so becoming closed state from normally open by the state of bidirectional thyristor W1.
Two output ends of integrated chip U2 go off state by closed state at this time, and load power source signal is through wiring at this time
End A2 flows through resistance R4 and enters the output end of integrated chip U2, due to becoming closed form between two output ends of integrated chip U2
State, therefore disconnected in the formed access of terminals A2 and B2, therefore bidirectional thyristor W1 cut-offs, so passing through bidirectional thyristor W2
State conducting state is become from normally off.
In this electronic type intermediate relay, the basic function of intermediate relay is all realized by electronic component, because
This completely avoid existing intermediate mechanical relay using when there are power attenuation, and when coil is run, has noise to generate
Defect, what is more important substantially prolong service life due to no mechanical construction of switch.
In this electronic type intermediate relay, while the function of normally opened contact and normally-closed contact is realized, fundamentally solved
The drawbacks of cannot achieve normally-closed contact in the product of similar " electronic switch " in the prior art, therefore can substitute completely existing
Intermediate mechanical relay in technology.It simultaneously can be in the multigroup identical triggering in parallel simultaneously of the both ends of trigger signal input terminal
Circuit, to realize the break-make of multigroup contact.
In the circuit of this electronic type intermediate relay, circuit structure is simple, therefore can be substantially reduced the body of actual product
Product, to contribute to the size according to conventional intermediate relay to be realized, be advantageously implemented this electronic type intermediate relay with
The direct replacement of conventional mechanical formula intermediate relay.
Embodiment 2：
As shown in Fig. 2, the present embodiment and embodiment 1 difference lies in：The output of integrated chip U1 ~ U2 in the present embodiment
The contact of one group of linkage is provided at end, specific installation position is：Normally opened contact T1 ' is connected in parallel on integrated chip U2 output ends
Between two pins, any one output end of integrated chip U1 is connected on the normally-closed contact T1 of normally opened contact T1 ' linkages
At pin.
On conventional intermediate mechanical relay, be provided with the poke rod of forced resetting, intermediate relay receive it is tactile
It signals to trigger normal work, once intermediate relay non-normal reset in its contact after trigger signal disappearance, it can be by dialling
The poke rod of dynamic forced resetting makes the contact not resetted in intermediate relay return to reset condition by force.In the present embodiment, lead to
The contact for crossing setting linkage, realizes the function of forced resetting in conventional intermediate relay.Linked switch can be from actual product
Shell on expose, facilitate realization forced resetting.
Its specific work process and operation principle are as follows：
After loading trigger signal between terminal V+ and terminal V-, bidirectional thyristor W1 is become that shape is connected from cut-off state
State, bidirectional thyristor W2 become closed state from conducting state, after trigger signal disappears, once because abnormal cause causes to collect
At chip U1 or/and integrated chip U2 failures cause bidirectional thyristor W1 or/and bidirectional thyristor W2 can not normal reset when, behaviour
Linked switch can be pressed by making personnel, at this time normally opened contact T1 ' be closed, by the output terminal shortcircuit of integrated chip U2, at this time if
Load is connected between terminals A2 and B2, the power supply of load passes through normally opened contact T1 ' and terminals B1 after terminals A1
Between form access, and bidirectional thyristor W2 is connected simultaneously, realizes the normally-closed contact for not restoring closed state as requested
Forced closed.
Normally opened contact T1 is disconnected while normally opened contact T1 ' is closed, at this time if connecting load between terminals A1 and B1,
The circuit that load power source triggers bidirectional thyristor W1 has then been cut off by force, is realized and is not restored the normal of off-state as requested
The pressure for opening contact disconnects.
Embodiment 1 is suitable for the occasion of DC controling ac with embodiment 2, i.e. trigger signal is direct current signal, and load exists
The circuit at normally opened contact both ends is the occasion of ac circuit.
Embodiment 3：
The present embodiment is suitable for the occasion of DC control direct current, and difference lies in normally opened for the present embodiment and embodiment 1 specific
The control loop of contact modules and normally-closed contact module changes, as shown in figure 4, in normally opened contact module, terminals A1
Collector, the emitter of triode Q1 and the output cathode of integrated chip U1 of triode Q2 in parallel simultaneously, triode Q2's
One end of the collector emitter of triode Q1 in parallel and resistance R10 simultaneously, the other end of resistance R10 and triode Q1's
The emitter of base stage while connecting triode Q3.The collector of triode Q3 while the emitter and resistance of connecting triode Q2
The base stage and integrated chip U1 output negative poles of one end of R8 ~ R9, the other end of resistance R9 while triode Q3 in parallel.Resistance R8
The other end be terminals B1, terminals A1 and B1 be normally opened contact two terminals.Resistance R8 indicates external loading, and
Do not limit is resistive load.
In normally-closed contact module, terminals A2 simultaneously the collector of triode Q5 in parallel, triode Q4 emitter with
And the output cathode of integrated chip U2, the emitter and resistance R13 of the collector of triode Q5 while triode Q4 in parallel
The emitter of one end, the other end of resistance R13 and the base stage of triode Q4 while connecting triode Q6.The current collection of triode Q6
Pole while the emitter of connecting triode Q5 and one end of resistance R11 ~ R12, the other end of resistance R12 while triode in parallel
The base stage and integrated chip U2 output negative poles of Q6.The other end of resistance R11 is terminals B2, and terminals A2 and B2 are normally opened touch
Two terminals of point.Resistance R11 indicates external loading, and it is resistive load not limit.
The operation principle of the present embodiment is similar to the operation principle of embodiment 1, and details are not described herein.
Embodiment 4：
As shown in figure 5, the present embodiment and embodiment 3 difference lies in：It adds in the present embodiment and plays forced resetting
The linked switch of effect, identical as the set-up mode of embodiment 2, normally opened contact T1 ' is connected in parallel on the two of integrated chip U2 output ends
Between a pin, drawing for any one output end of integrated chip U1 is connected on the normally-closed contact T1 of normally opened contact T1 ' linkages
At foot.Realize that the process of contact forced resetting and principle have had a detailed description in example 2 by linked switch, herein no longer
It is repeated.
Embodiment 5：
Embodiment 5 and embodiment 1 difference lies in：It in the present embodiment, can be in the input terminal of trigger signal（Terminal V+ and
Terminal V-）Place's setting rectification circuit and corresponding filter circuit, so as to realize, it is AC signal to meet trigger signal
The application of occasion.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, according to the technical essence of the invention to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (9)
1. a kind of electronic type intermediate relay, including trigger signal input terminal and the contact by trigger signal drive actions,
It is characterized in that：The contact be provided with it is multigroup, each group include a normally opened contact and a normally-closed contact, normally opened contact and
Normally-closed contact includes the controllable type power electronic devices or/and circuit for being provided with control terminal, is additionally provided with normally opened contact control
Module and normally-closed contact control module, the trigger signal input terminal connect normally opened contact control module and normally closed simultaneously
The output end of the input terminal of contact control module, normally opened contact control module and normally-closed contact control module is separately connected normally opened
The control terminal of contact and normally-closed contact.
2. electronic type intermediate relay according to claim 1, it is characterised in that：The normally-closed contact control module is adopted
It is realized with the closed type optocoupler that output end is closed state.
3. electronic type intermediate relay according to claim 1, it is characterised in that：The normally opened contact control module is adopted
It is realized with the open type optocoupler that output end is off-state.
4. electronic type intermediate relay according to claim 1, it is characterised in that：It is provided with manually implemented described normally opened tactile
The forced resetting module that point and normally-closed contact reset, forced resetting module are arranged in the normally opened contact control module and often
The output end of closed contact control module.
5. electronic type intermediate relay according to claim 4, it is characterised in that：The forced resetting module is linkage
Switch, interior linked switch includes one group of contact manually control, linkage：Contact in normally open（T1’）With in normal
The contact of closed state（T1）, the contact of normally open is in linked switch（T1’）It is connected in parallel on the output of normally-closed contact control module
Between two terminals at end, the contact of normally off is in linked switch（T1）It is connected on the output of normally opened contact control module
At any one terminals at end.
6. electronic type intermediate relay according to claim 1 or 2, it is characterised in that：The normally-closed contact controls mould
The output end in closed state is connected in parallel between two terminals of normally-closed contact and is formed into a loop in block, the normally-closed contact
Control terminal simultaneously be connected in parallel in the circuit.
7. electronic type intermediate relay according to claim 1 or 3, it is characterised in that：The normally opened contact controls mould
The output end being off in block is connected in parallel between two terminals of normally opened contact and is formed into a loop, the normally opened contact
Control terminal simultaneously be connected in parallel in the circuit.
8. electronic type intermediate relay according to claim 1, it is characterised in that：It is additionally provided with Power Entry Module, directly
The trigger signal of manifold formula is directly accessed the input terminal of Power Entry Module, and the trigger signal of form of communication is by setting
Set the input terminal in the rectification circuit access Power Entry Module of Power Entry Module input terminal, the output end of Power Entry Module
The input terminal of normally opened contact control module and normally-closed contact control module is connected simultaneously.
9. electronic type intermediate relay according to claim 8, it is characterised in that：In the defeated of the Power Entry Module
Outlet is provided with the voltage stabilizing electricity for stablizing trigger signal to normally opened contact control module and the input of normally-closed contact control module
Road and the indicating circuit for being used to indicate trigger signal feeding state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166516.7A CN106816344B (en) | 2017-03-20 | 2017-03-20 | A kind of electronic type intermediate relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166516.7A CN106816344B (en) | 2017-03-20 | 2017-03-20 | A kind of electronic type intermediate relay |
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| Publication Number | Publication Date |
|---|---|
| CN106816344A CN106816344A (en) | 2017-06-09 |
| CN106816344B true CN106816344B (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710166516.7A Active CN106816344B (en) | 2017-03-20 | 2017-03-20 | A kind of electronic type intermediate relay |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10271083A (en) * | 1997-03-25 | 1998-10-09 | Nec Corp | Channel quality monitor system |
| JP2003114791A (en) * | 2001-10-05 | 2003-04-18 | Seiko Epson Corp | Main board of printer controller, and relay device |
| CN2842707Y (en) * | 2005-11-25 | 2006-11-29 | 上海嘉定区华通电器厂 | A kind of auxiliary relay |
| CN102436971A (en) * | 2011-04-27 | 2012-05-02 | 上海市电力公司 | Remote control on-off reclosing relay |
| CN103023044A (en) * | 2012-11-27 | 2013-04-03 | 常州市宏大电气有限公司 | Combination switch with intelligent zero-crossing switching function |
| CN205911182U (en) * | 2016-06-30 | 2017-01-25 | 北京京港地铁有限公司 | A relay set for safety door of subway |
-
2017
- 2017-03-20 CN CN201710166516.7A patent/CN106816344B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10271083A (en) * | 1997-03-25 | 1998-10-09 | Nec Corp | Channel quality monitor system |
| JP2003114791A (en) * | 2001-10-05 | 2003-04-18 | Seiko Epson Corp | Main board of printer controller, and relay device |
| CN2842707Y (en) * | 2005-11-25 | 2006-11-29 | 上海嘉定区华通电器厂 | A kind of auxiliary relay |
| CN102436971A (en) * | 2011-04-27 | 2012-05-02 | 上海市电力公司 | Remote control on-off reclosing relay |
| CN103023044A (en) * | 2012-11-27 | 2013-04-03 | 常州市宏大电气有限公司 | Combination switch with intelligent zero-crossing switching function |
| CN205911182U (en) * | 2016-06-30 | 2017-01-25 | 北京京港地铁有限公司 | A relay set for safety door of subway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106816344A (en) | 2017-06-09 |
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