CN207426980U - A kind of ON-OFF control circuit - Google Patents
A kind of ON-OFF control circuit Download PDFInfo
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- CN207426980U CN207426980U CN201720716986.1U CN201720716986U CN207426980U CN 207426980 U CN207426980 U CN 207426980U CN 201720716986 U CN201720716986 U CN 201720716986U CN 207426980 U CN207426980 U CN 207426980U
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- relay
- resistance
- control circuit
- access interface
- dry
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Abstract
The utility model provides a kind of ON-OFF control circuit, can realize opening and turning off for single channel and the dry and hard point control circuit of multichannel, realize the time-sharing multiplex to same DC power supply.When there is the dry and hard point control circuit of more than two-way, the wherein access interface conducting of dry and hard point control circuit all the way, the access interface shut-off of other dry and hard point control circuits, the relay being then connected with the dry and hard point control circuit of conducting is closed, and DC level is exported by the relay of the closure to load port；When the access interface of the dry and hard point control circuit of multichannel all simultaneously turns on, according to the relation mutually restricted between dry and hard point control circuit, with being turned off per passive node control circuit all the way, the relay being attached thereto all is constantly in off state, and DC level can not be exported by relay to load port.
Description
Technical field
The utility model is related to a kind of control circuit, more particularly to a kind of ON-OFF control circuit.
Background technology
High-voltage suppling power is a kind of switch converters, for for photovoltaic solar, wind-power electricity generation, SVG, central air-conditioning etc.
Control system, heating system provide stable, reliable DC voltage.At present, more high input voltage requirement, more wide input voltage model
The PV power supply requirements enclosed increase severely, and industry development is rapid.And a visible trend of the sector development is that application scenario thousand becomes ten thousand
Change, output power is increasing, working environment is more and more stringenter.
Passive node signal is common in the fields such as industry control, electric power.Itself the uncharged idle contact referred to, which is that one kind is passive, to be opened
It closes, has and be closed and switch two states, there is no polarity between two contact points.
The application scenarios such as high voltage power supply at present, generally use passive node, relay or other control switches export it
The load end power supply or require to realize timesharing to a DC power supply that DC voltage switches to more than different two-way or two-way
Multiplexing.
The prior art is typically to control single channel passive node signal, for passive node signal and passive node signal more than two-way
Between control logic, there are no the preferable solutions of simple possible.
Utility model content
Have in view of that, in order to solve the problems in the existing technology, the utility model provides a kind of ON-OFF control circuit,
Opening and turning off for dry and hard point control circuit more than single channel, two-way and two-way can be realized, so as to fulfill direct current will be exported
Crush-cutting shifts to load end power supply more than different two-way or two-way.
The purpose of this utility model is achieved through the following technical solutions：A kind of ON-OFF control circuit, it is dry including first
Node control circuit, to be switched DC level Vo+ and Vo-, relay DC power supply VDD, the first relay driving electricity
Road, load port A2+.
First dry and hard point control circuit includes passive node access interface A2, passive node access interface B2, resistance R21, resistance
R22, resistance R23, resistance R24 and triode Q22；
One end of passive node access interface A2 and one end of passive node access interface B2 connect external control signal respectively, control
Passive node access interface A2's and B2 processed turns on and off；One end connection relay DC power supply VDD of resistance R21, electricity
The other end of resistance R21 connects one end of resistance R22 and the emitter of triode Q22 respectively；The other end connection electricity of resistance R22
Hinder one end of R23 and the base stage of triode Q22；The other end of the other end connection passive node access interface A2 of resistance R23；Three poles
One end of the collector connection resistance R24 of pipe Q22, the other end of resistance R24 are grounded with the other end of passive node access interface B2.
First relay drive circuit includes relay K2, diode D21, NPN type triode Q21, load Z2；Relay
K2 ports 1 connect to be switched DC level Vo+, and relay K2 ports 2 connect load port A2+, and relay K2 ports 3 connect
The collector of triode Q21 and the anode of diode D21；The emitter ground connection of triode Q21, the base stage connection of triode Q21
The collector of triode Q22；Relay K2 ports 4 connect diode D21 cathodes and relay DC power supply VDD, load
Z2 mono- terminates load port A2+, other end ground connection.
Preferably, the connection relation of resistance R22 and resistance R23 can be adjusted to：Electricity described in one end connection of resistance R22
The other end of R21 is hindered, the base stage of the triode Q22 described in one end connection of the resistance R23, the resistance R22's is another
One end is connected the passive node access interface A2 simultaneously with the other end of the resistance R23.
Preferably, a kind of ON-OFF control circuit includes the second dry and hard point control circuit and the second relay drive circuit；The
Two dry and hard point control circuits include passive node access interface A3, passive node access interface B3, resistance R31, resistance R32, resistance
R33, resistance R34 and triode Q31；
One end of passive node access interface A3 and one end of passive node access interface B3 connect external control signal respectively, control
Passive node access interface A3's and B3 processed turns on and off；One end connection relay DC power supply VDD of resistance R31, electricity
The other end of resistance R31 connects one end of resistance R32 and the emitter of triode Q32 respectively；The other end connection electricity of resistance R32
Hinder one end of R33 and the base stage of triode Q32；The other end of the other end connection passive node access interface A3 of resistance R33；Three
One end of the collector connection resistance R34 of pole pipe Q32, the other end of resistance R34 and another termination of passive node access interface B3
Ground.
Second relay drive circuit includes relay K3, diode D11, NPN type triode Q31, load Z3.Relay
K3 ports 1 and relay K3 ports 2 are a pair of of mechanical contacts of relay K3, and relay K3 ports 3 and relay K3 ports 4 are
Control signal input mouth；Relay K3 ports 1 connect to be switched DC level Vo+, and relay K3 ports 2 connect load port
The collector of 3 connecting triode Q31 of A3+, relay K3 port and the anode of diode D11；The emitter of triode Q31 connects
Ground, the collector of the base stage connecting triode Q32 of triode Q31；Relay K3 ports 4 connect diode D11 cathodes and relay
Device DC power supply VDD, load Z3 mono- terminate load port A3+, other end ground connection.
Preferably, the connection relation of resistance R32 and resistance R33 can be adjusted to：One end connection resistance R31 of resistance R32
The other end, the base stage of one end connecting triode Q32 of resistance R33, the other end of the other end and resistance R33 of resistance R32 is same
When connect passive node access interface A3.
Preferably, the connection between the first dry and hard point control circuit and the described second dry and hard point control circuit is closed
System can be adjusted to：The other end of passive node access interface A2 is connected to the base stage of Q31；The other end of passive node access interface A3
It is connected to the base stage of Q21.
Connection relation between the first dry and hard point control circuit and the described second dry and hard point control circuit may be used also
To be adjusted to：The other end of passive node access interface A2 is connected to the base stage of Q31；The other end connection of passive node access interface A3
To the emitter of Q22.
Preferably, when no control signal or control signal are low level, relay K2 a pair of mechanical contact and relay K3
A pair of of mechanical contact be normally open.
The thinking of the utility model is：External control signal is inputted to passive node access interface A1 and A2, controls passive node
On, off, when passive node access interface turns on, dry and hard point control circuit is also switched on, so drive relay or similar
The control switch control side conducting of function, meanwhile, relay mechanical contact is closed；To be switched DC level passes through relay
It is closed contact and forms circuit, export to load port；When passive node disconnects, the branch being connected with passive node also disconnects, relay
The control switch control side of device or similar functions disconnects, meanwhile, relay mechanical contact disconnects.To be switched DC level cannot
By the break contact of relay, no DC level is transmitted to load port.The control logic of the utility model see the table below 1：
| First dry and hard point control circuit | Second dry and hard point control circuit | The first via exports | Second tunnel exports |
| 0 | 0 | OFF | OFF |
| 0 | 1 | OFF | ON |
| 1 | 0 | ON | OFF |
| 1 | 1 | OFF | OFF |
Table 1
Remarks：1 represents dry and hard point control circuit access, and 0 represents dry and hard point control circuit open circuit；ON represents that road output is logical
Road, OFF represent road output open circuit.
When the dry and hard point control circuit of single channel, concrete operating principle is as follows：When dry and hard point control circuit, which is closed, to be turned on, after
Electric appliance DC power supply VDD connects with the passive node access interface A2 compositions of resistance R21, resistance R22, resistance R23 and closure
Bleeder circuit, triode Q22 is PNP type triode, after triode Q22 emitter junction forward bias, the conducting of Q22 collector junctions, after
Electric appliance DC power supply VDD forms bleeder circuit of connecting with resistance R21, triode Q22 collector junctions and resistance R24；Three poles
Pipe Q21 is NPN type triode, after Q21 emitter junction forward bias, the conducting of Q21 collector junctions, relay DC power supply VDD with
Into closed circuit, attracting electric relay mechanical contact is closed conducting, to be switched for relay driving winding, triode Q21 current collectings
DC level circuit is formed by the closure contact of relay, export to load port.When dry and hard point control circuit disconnects,
Triode Q21, Q22 are disconnected, and relay mechanical contact disconnects, and to be switched DC level cannot be transmitted to load port.
Further, if to realize the time-sharing multiplex to same DC power supply, external control signal control is needed
The on, off of the dry and hard point control circuit of two-way.When the first dry and hard point control circuit conducting, the second dry and hard point control circuit shut-off
When, the first relay drive circuit conducting, the second relay drive circuit shut-off drives relay K2 mechanical contacts to be closed, treats
The DC level of switching forms circuit by the closure contact of driven relay K2, exports to load port A2+；
When the second dry and hard point control circuit conducting, the first dry and hard point control circuit shut-off, the second relay drive circuit
Conducting, the shut-off of the first relay drive circuit, driving relay K3 mechanical contacts are closed, and to be switched DC level is by being driven
The closure contact of dynamic relay K3 forms circuit, exports to load port A3+；
When the dry and hard point control circuit of two-way all turns on, relay K2 and K3 mechanical contact disconnects, to be switched direct current
Level cannot be exported to any one load end；
The course of work is as follows：For the dry and hard point control circuit of two-way, with the dry and hard point control circuit of single channel difference lies in：
The first via passive node input port A2, B2 are closed conducting simultaneously, drag down triode Q32 and emit electrode potential to zero electricity
Flat, triode Q32 is PNP type triode, turns off triode Q32, so as to turn off the second dry and hard point control circuit, further turns off
Second relay drive circuit, relay K3 mechanical contacts maintain a normally open state, and to be switched DC level cannot be transmitted to negative
Load port A3+.
When second passive node input port A3, B3, which is closed, to be turned on, similarly, drags down triode Q22 and emit electrode potential to zero
Level turns off triode Q22, so as to turn off the first dry and hard point control circuit, further turns off first after electric drive circuit, relay
Device K2 mechanical contacts maintain a normally open state, and to be switched DC level cannot be transmitted to load port A2+.
Can also by dragging down the base current of triode Q21 and Q31, so as to turn off the mode of triode Q21 and Q31,
To obtain the effect of identical.
Particularly, the dry and hard point control circuit design of the two-way of the utility model is very flexible, for single channel passive node
Port, use can be directly realized by break-make control；For two-way passive node port, only with four switching tubes, you can realize exclusive or
Door control logic, circuit are simple, reliable.
Compared with prior art, the utility model has the advantages that：
1) this programme can be directly realized by break-make control for single channel passive node port, use；It is easily designed, convenient for debugging.
2) this programme is for two-way passive node port, only with four switching tubes, you can realizes XOR gate control logic, electricity
Road is simple, reliable.
3) this programme circuit structure is simple, and component number is few, flexible design, cost advantage.
Description of the drawings
Fig. 1 is the utility model first embodiment schematic diagram；
Fig. 2 is the utility model second embodiment schematic diagram；
Fig. 3 is the utility model 3rd embodiment schematic diagram；
Fig. 4 is the utility model fourth embodiment schematic diagram；
Fig. 5 is the 5th embodiment schematic diagram of the utility model；
Fig. 6 is the utility model sixth embodiment schematic diagram；
Fig. 7 is the utility model sixth embodiment schematic diagram；
Fig. 8 is the utility model sixth embodiment schematic diagram；
Fig. 9 is the utility model sixth embodiment schematic diagram；
Figure 10 is the utility model sixth embodiment schematic diagram.
Specific embodiment
First embodiment
Fig. 1 shows the utility model first embodiment circuit diagram, and a kind of ON-OFF control circuit is dry and hard including first
Point control circuit, to be switched DC level Vo+ and Vo-, relay DC power supply VDD, the first relay drive circuit,
Load port A2+.
First dry and hard point control circuit includes passive node access interface A2, passive node access interface B2, resistance R21, resistance
R22, resistance R23, resistance R24 and triode Q22；
One end of passive node access interface A2 and one end of B2 connect external control signal respectively, and control A2's and B2 is open-minded
And shut-off；One end connection VDD of R21, the other end of R21 connect one end of R22 and the emitter of Q22 respectively；The other end of R22
Connect one end of R23 and the base stage of Q22；The other end connection A2's of R23；One end of the collector connection R24 of Q22, R24's
The other end of the other end and B2 are grounded.
First relay drive circuit includes relay K2, diode D21, NPN type triode Q21, load Z2.K2 ports
1 and K2 ports 2 are mechanical contacts, and K2 ports 3 and K2 ports 4 are control signal input mouths；K2 ports 1 connect Vo+, K2 ends
Mouth 2 connects A2+, and K2 ports 3 connect the collector of Q21 and the anode of D21；The emitter ground connection of Q21, the base stage connection Q22 of Q21
Collector；K2 ports 4 connect D21 cathodes and VDD, Z2 mono- terminates A2+, other end ground connection.
Embodiment one belongs to the dry and hard point control circuit of single channel, and the connection relation of circuit shown in Figure 1 tells about this reality
With the operation principle of new-type circuit：
When A2, B2, which are closed, to be turned on, VDD and resistance R21, R22, R23 are made up of A2, B2 and earth signal GND to connect point
Volt circuit, Q22 are PNP type triode, after Q22 emitter junction forward bias, the conducting of Q22 collector junctions, and VDD and resistance R21, Q22
Collector junction and R24 form series connection bleeder circuit；Meanwhile after triode Q21 emitter junction forward bias, the conducting of Q21 collector junctions, three
Pole pipe Q21 is NPN type triode, and the driving winding, Q21 current collectings in VDD and K2 are into closed circuit, attracting electric relay K2 machines
Tool contact turns on, and to be switched DC level VO+, VO- forms circuit by the closure contact of K2 and load port A2+.
When A2, B2 are disconnected, relay DC power supply VDD cannot pass through the dry of disconnection with resistance R21, R22, R23
Node A2, B2 form bleeder circuit of connecting with earth signal GND, and Q21, Q22 emitter junction, collector junction disconnect, relay K2 machineries
Contact disconnects, and to be switched DC level VO+, VO- cannot form closed circuit with load access interface.At this time DC level without
Method gives load Z2 power supplies.
For relay K2 when no drive signal or drive signal are low level, its mechanical contact is normally open.
Relay K2 can be switched to replace with the control of identity function.
Second embodiment
Fig. 2 shows the utility model second embodiment circuit diagram, unlike first embodiment：Second implements
Example includes the second dry and hard point control circuit and the second relay drive circuit, and phase between the dry and hard point control circuit of this two-way
The time-sharing multiplex to same DC power supply is realized in interaction.
Second dry and hard point control circuit includes passive node access interface A3, passive node access interface B3, resistance R31, resistance
R32, resistance R33, resistance R34 and triode Q31；One end of passive node access interface A3 and one end of passive node access interface B3
External control signal is connected respectively, and control passive node access interface A3's and B3 turns on and off；Resistance R31 one end connection after
The other end of electric appliance DC power supply VDD, resistance R31 connect one end of resistance R32 and the emitter of triode Q32 respectively；
One end of other end connection resistance R33 of resistance R32 and the base stage of triode Q32；The other end connection passive node of resistance R33 connects
The other end of inbound port A3；One end of the collector connection resistance R34 of triode Q32, the other end and the passive node of resistance R34 connect
The other end ground connection of inbound port B3.
Connection relation between second dry and hard point control circuit and the first dry and hard point control circuit is：First passive node controls
The other end of passive node access interface A2 in circuit is connected to the emitter of Q32；It is dry and hard in second dry and hard point control circuit
The other end of point access interface A3 is connected to the emitter of Q22.
Second relay drive circuit includes relay K3, diode D11, NPN type triode Q31, load Z3.Relay
K3 ports 1 and relay K3 ports 2 are mechanical contacts, and relay K3 ports 3 and relay K3 ports 4 are control signal inputs
Mouthful；Relay K3 ports 1 connect to be switched DC level Vo+, and relay K3 ports 2 connect load port A3+, relay K3 ends
The mouth collector of 3 connecting triode Q31 and the anode of diode D11, the emitter ground connection of Q31, the base stage connection second of Q31 are dry
The collector of Q32 in node control circuit；Relay K3 ports 4 connect diode D11 cathodes and relay DC power supply
VDD, load Z3 mono- terminate load port A3+, other end ground connection.
The connection relation of circuit shown in Figure 2 tells about the operation principle of the utility model circuit：Second passive node
The operation principle of control circuit is identical with the operation principle of the first dry and hard point control circuit, and details are not described herein, two-way passive node
Interaction and operation principle between control circuit are described as follows：
With the dry and hard point control circuit of single channel shown in Fig. 1 difference lies in；
It is turned on when passive node access interface A2, B2 are closed, when passive node access interface A3, B3 are disconnected, the first passive node control
Circuit turn-on processed, the conducting of the first relay drive circuit, attracting electric relay machine K2 tool contact closures, to be switched DC level VO
+ exported by relay K2 to load Z2；Similarly, turned on when passive node access interface A3, B3 are closed, passive node access interface
When A2, B2 are disconnected, the second dry and hard point control circuit conducting, the second relay drive circuit turns on, and attracting electric relay machine K3 tools touch
Point is closed, and to be switched DC level VO+ is exported by relay K3 to load Z3.
If passive node access interface A2 and B2, A3 and B3 are closed at turning on, the dry and hard point control circuit of two-way is simultaneously
Shut-off, two-way relay drive circuit are turned off, and no DC level is transmitted to load port, and concrete principle is as follows：
Passive node access interface A2, B2 are closed conducting simultaneously, drag down triode Q32 and emit electrode potential to zero level, shut-off
Triode Q32 so as to turn off the second dry and hard point control circuit, further turns off the second relay drive circuit, relay K3 machines
Tool contact maintains a normally open state, and load Z3 both ends to be powered potential difference is zero.
Passive node access interface A3, B3 are closed conducting, similarly, drag down triode Q22 and emit electrode potential to zero level, shut-off
Triode Q22 so as to turn off the first dry and hard point control circuit, further turns off first after electric drive circuit, relay K2 machineries
Contact maintains a normally open state, and load Z2 both ends to be powered potential difference is zero.
So when two-way passive node access interface is all closed at conducting, the dry and hard point control circuit of two-way simultaneously turns off,
Load port is exported without DC level.
If passive node access interface A2 and B2, A3 and B3 are simultaneously switched off, the dry and hard point control circuit of two-way is same straight
It is off state.
3rd embodiment
Fig. 3 shows the utility model 3rd embodiment functional block diagram, with single channel passive node shown in Fig. 1 in first embodiment
Difference lies in the connection relations having adjusted between resistance R22, resistance R23 and triode Q22 for port controlling：One end of resistance R22
Connect the other end of resistance R21, the base stage of one end connecting triode Q22 of resistance R23, the other end of R22 and the other end of R23
Connect passive node access interface A2 simultaneously.The effect of its operation principle and realization, is identical with first embodiment, and details are not described herein.
Fourth embodiment
Fig. 4 shows the utility model fourth embodiment functional block diagram, and fourth embodiment is will be in two-way 3rd embodiment
The dry and hard point control circuit of the single channel is combined, and becomes the dry and hard point control circuit of two-way.The tune unlike embodiment two
The connection relation of resistance in whole each dry and hard point control circuit：The other end of one end connection resistance R21 of resistance R22, electricity
The base stage of one end connecting triode Q22 of R23 is hindered, the other end of R22 and the other end of R23 connect passive node access interface simultaneously
A2；The other end of one end connection resistance R31 of resistance R32, the base stage of one end connecting triode Q32 of resistance R33, resistance R32
The other end be connected passive node access interface A3 simultaneously with the other end of resistance R33.
The effect of connection relation between the dry and hard point control circuit of two-way is consistent with second embodiment, operation principle and realization
Identical with second embodiment, details are not described herein.
5th embodiment
5th embodiment is to do the dry and hard point control circuit of single channel in first embodiment with the single channel in 3rd embodiment
Node control circuit is combined, and is become the dry and hard point control circuit of two-way, as shown in figure 5, compared with second embodiment, is simply adjusted
The whole wherein resistance connection relation of dry and hard point control circuit all the way：The other end of one end connection resistance R31 of resistance R32, electricity
The base stage of one end connecting triode Q32 of R33 is hindered, the other end of resistance R32 is connected dry and hard simultaneously with the other end of resistance R33
Point access interface A3.
Connection relation between the dry and hard point control circuit of two-way is consistent with second embodiment, operation principle and the work(realized
Effect is also identical with second embodiment.
Sixth embodiment
As shown in fig. 6, sixth embodiment is also to develop according to second embodiment, unlike second embodiment：
Connection relation between the dry and hard point control circuit of two-way adjusts, the passive node access interface in the first dry and hard point control circuit
The other end of A2 is connected to the base stage of Q31；The other end connection of passive node access interface A3 in second dry and hard point control circuit
To the base stage of Q21.
Its operation principle is slightly different with second embodiment：
When passive node access interface A2 and B2, A3 and B3 are closed at turning on, the dry and hard point control circuit of two-way closes simultaneously
Disconnected, two-way relay drive circuit is turned off, and no DC level is transmitted to load port, and concrete principle is as follows：
Passive node access interface A2, B2 are closed conducting simultaneously, drag down triode Q31 base potentials to zero level, shut-off three
Pole pipe Q31 so as to turn off the second dry and hard point control circuit, further turns off the second relay drive circuit, relay K3 machineries
Contact maintains a normally open state, and load Z3 both ends to be powered potential difference is zero.
Passive node access interface A3, B3 are closed conducting, similarly, drag down triode Q21 base potentials to zero level, shut-off three
Pole pipe Q21 so as to turn off the first dry and hard point control circuit, further turns off first after electric drive circuit, relay K2 machineries touch
Point maintains a normally open state, and load Z2 both ends to be powered potential difference is zero.
Other operation principles are identical with second embodiment, and details are not described herein.
7th embodiment
As shown in fig. 7, the 7th embodiment unlike sixth embodiment, is had adjusted in each dry and hard point control circuit
The connection relation of resistance：The other end of one end connection resistance R21 of resistance R22, one end connecting triode Q22's of resistance R23
Base stage, the other end of R22 and the other end of R23 connect passive node access interface A2 simultaneously；One end connection resistance of resistance R32
The other end of R31, the base stage of one end connecting triode Q32 of resistance R33, the other end of resistance R32 are another with resistance R33's
End connects passive node access interface A3 simultaneously.
Operation principle is identical with sixth embodiment.
8th embodiment
As shown in figure 8, the 8th embodiment unlike sixth embodiment, has adjusted one of them dry and hard point control circuit
In resistance connection relation：The other end of one end connection resistance R31 of resistance R32, one end connecting triode of resistance R33
The base stage of Q32, the other end of resistance R32 are connected passive node access interface A3 simultaneously with the other end of resistance R33.
Operation principle is identical with sixth embodiment.
9th embodiment
As shown in figure 9, the 9th embodiment unlike the 5th embodiment to the company between the dry and hard point control circuit of two-way
The relation of connecing adjusts：The other end of passive node access interface A2 in first dry and hard point control circuit is connected to the transmitting of Q32
Pole；The other end of passive node access interface A3 in second dry and hard point control circuit is connected to the base stage of Q21.
Operation principle difference is：Passive node access interface A2, B2 are closed conducting simultaneously, drag down triode Q32 emitters
Current potential turns off triode Q32, so as to turn off the second dry and hard point control circuit, further turns off the drive of the second relay to zero level
Dynamic circuit, relay K3 mechanical contacts maintain a normally open state, and load Z3 both ends to be powered potential difference is zero.
Passive node access interface A3, B3 are closed conducting, similarly, drag down triode Q21 base potentials to zero level, shut-off three
Pole pipe Q21 so as to turn off the first dry and hard point control circuit, further turns off first after electric drive circuit, relay K2 machineries touch
Point maintains a normally open state, and load Z2 both ends to be powered potential difference is zero.
Tenth embodiment
As shown in Figure 10, the tenth embodiment is similar with the 9th embodiment and to two-way passive node control in the 5th embodiment
Connection relation between circuit processed adjusts：The other end of passive node access interface A2 in first dry and hard point control circuit connects
It is connected to the base stage of Q31；The other end of passive node access interface A3 in second dry and hard point control circuit is connected to the transmitting of Q22
Pole.
Operation principle difference is：Passive node access interface A2, B2 are closed conducting simultaneously, drag down triode Q31 base stages electricity
Position turns off triode Q31, so as to turn off the second dry and hard point control circuit, further turns off the second relay driving to zero level
Circuit, relay K3 mechanical contacts maintain a normally open state, and load Z3 both ends to be powered potential difference is zero.
Passive node access interface A3, B3 are closed conducting, similarly, drag down triode Q22 and emit electrode potential to zero level, shut-off
Triode Q22 so as to turn off the first dry and hard point control circuit, further turns off first after electric drive circuit, relay K2 machineries
Contact maintains a normally open state, and load Z2 both ends to be powered potential difference is zero.
It the above is only the preferred embodiment of the utility model, it is noted that above-mentioned preferred embodiment should not regard
For the limitation to the utility model, for those skilled in the art, the essence of the utility model is not being departed from
In god and scope, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection model of the utility model
It encloses, is no longer repeated here with embodiment, the scope of protection of the utility model should be subject to claim limited range.
Claims (10)
1. a kind of ON-OFF control circuit including to be switched DC level Vo+ and Vo-, relay DC power supply VDD, is born
Load port A2+, it is characterised in that：Further include the first dry and hard point control circuit and the first relay drive circuit；
The first dry and hard point control circuit includes passive node access interface A2, passive node access interface B2, resistance R21, electricity
Hinder R22, resistance R23, resistance R24 and triode Q22；One end of passive node access interface A2 and the one of passive node access interface B2
End connects external control signal respectively；One end connection relay DC power supply VDD of resistance R21, the other end of resistance R21
One end of resistance R22 and the emitter of triode Q22 are connected respectively；One end and three of the other end connection resistance R23 of resistance R22
The base stage of pole pipe Q22；The other end of the other end connection passive node access interface A2 of resistance R23；The collector of triode Q22 connects
One end of connecting resistance R24, the other end of resistance R24 are grounded with the other end of passive node access interface B2；
First relay drive circuit includes relay K2, diode D21, NPN type triode Q21, load Z2；Relay
Device K2 ports 1 connect to be switched DC level Vo+, and relay K2 ports 2 connect load port A2+, and relay K2 ports 3 connect
The collector of triode Q21 and the anode of diode D21；The emitter ground connection of triode Q21, the base stage connection of triode Q21
The collector of triode Q22；Relay K2 ports 4 connect diode D21 cathodes and relay DC power supply VDD, load
Z2 mono- terminates load port A2+, other end ground connection.
2. a kind of ON-OFF control circuit according to claim 1, it is characterised in that：The resistance R22 and the electricity
The connection relation of resistance R23 is adjusted to：The other end of resistance R21 described in one end connection of the resistance R22, the resistance
The base stage of triode Q22 described in one end connection of R23, the other end of the resistance R22 are another with the resistance R23's
End connects the passive node access interface A2 simultaneously.
3. a kind of ON-OFF control circuit according to claim 1 or 2, it is characterised in that：The ON-OFF control circuit is also
Including load port A3+, the second dry and hard point control circuit and the second relay drive circuit；
The second dry and hard point control circuit includes passive node access interface A3, passive node access interface B3, resistance R31, electricity
Hinder R32, resistance R33, resistance R34 and triode Q31；One end of passive node access interface A3 and the one of passive node access interface B3
End connects external control signal respectively；One end connection relay DC power supply VDD of resistance R31, the other end of resistance R31
One end of resistance R32 and the emitter of triode Q32 are connected respectively；One end and three of the other end connection resistance R33 of resistance R32
The base stage of pole pipe Q32；The other end of the other end connection passive node access interface A3 of resistance R33；The collector of triode Q32 connects
One end of connecting resistance R34, the other end of resistance R34 are grounded with the other end of passive node access interface B3；
Connection relation between the first dry and hard point control circuit and the described second dry and hard point control circuit is：Passive node
The other end of access interface A2 is connected to the emitter of Q32；The other end of passive node access interface A3 is connected to the transmitting of Q22
Pole；
Second relay drive circuit includes relay K3, diode D11, NPN type triode Q31, load Z3；Relay
Device K3 ports 1 and relay K3 ports 2 are a pair of of mechanical contact of relay K3, relay K3 ports 3 and relay K3 ports 4
It is control signal input mouth；Relay K3 ports 1 connect to be switched DC level Vo+, and relay K3 ports 2 connect load end
Mouth A3+, the collector of 3 connecting triode Q31 of relay K3 ports and the anode of diode D11；The emitter of triode Q31 connects
Ground, the collector of the base stage connecting triode Q32 of triode Q31；Relay K3 ports 4 connect diode D11 cathodes and relay
Device DC power supply VDD, load Z3 mono- terminate load port A3+, other end ground connection.
4. a kind of ON-OFF control circuit according to claim 3, it is characterised in that：The resistance R32 and the electricity
The connection relation of resistance R33 is adjusted to：The other end of resistance R31 described in one end connection of the resistance R32, the resistance
The base stage of triode Q32 described in one end connection of R33, the other end of the resistance R32 are another with the resistance R33's
End connects passive node access interface A3 simultaneously.
5. a kind of ON-OFF control circuit according to claim 3, it is characterised in that：The first dry and hard point control circuit
Connection relation between the second dry and hard point control circuit is adjusted to：The other end of passive node access interface A2 is connected to
The base stage of Q31；The other end of passive node access interface A3 is connected to the base stage of Q21.
6. a kind of ON-OFF control circuit according to claim 4, it is characterised in that：The first dry and hard point control circuit
Connection relation between the second dry and hard point control circuit is adjusted to：The other end of passive node access interface A2 is connected to
The base stage of Q31；The other end of passive node access interface A3 is connected to the base stage of Q21.
7. a kind of ON-OFF control circuit according to claim 3, it is characterised in that：The first dry and hard point control circuit
Connection relation between the second dry and hard point control circuit is adjusted to：The other end of passive node access interface A2 is connected to
The base stage of Q31；The other end of passive node access interface A3 is connected to the emitter of Q22.
8. a kind of ON-OFF control circuit according to claim 4, it is characterised in that：The first dry and hard point control circuit
Connection relation between the second dry and hard point control circuit is adjusted to：The other end of passive node access interface A2 is connected to
The base stage of Q31；The other end of passive node access interface A3 is connected to the emitter of Q22.
9. a kind of ON-OFF control circuit according to claim 5 to 8 any one, it is characterised in that：The relay
K2 ports 1 and the relay K2 ports 2 are a pair of of mechanical contact of relay K2, the relay K2 ports 3 and institute
The relay K2 ports 4 stated are control signal input mouths；
The relay K3 ports 1 and the relay K3 ports 2 are a pair of of mechanical contacts of relay K3, it is described after
Electric appliance K3 ports 3 and the relay K3 ports 4 are control signal input mouths.
10. a kind of ON-OFF control circuit according to claim 9, it is characterised in that：A pair of of machine of the relay K2
Tool contact and a pair of of mechanical contact of the relay K3 are normally opened when no control signal or control signal are low level
State.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720716986.1U CN207426980U (en) | 2017-06-19 | 2017-06-19 | A kind of ON-OFF control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720716986.1U CN207426980U (en) | 2017-06-19 | 2017-06-19 | A kind of ON-OFF control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207426980U true CN207426980U (en) | 2018-05-29 |
Family
ID=62399064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720716986.1U Withdrawn - After Issue CN207426980U (en) | 2017-06-19 | 2017-06-19 | A kind of ON-OFF control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN207426980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171560A (en) * | 2017-06-19 | 2017-09-15 | 广州金升阳科技有限公司 | A kind of ON-OFF control circuit |
-
2017
- 2017-06-19 CN CN201720716986.1U patent/CN207426980U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171560A (en) * | 2017-06-19 | 2017-09-15 | 广州金升阳科技有限公司 | A kind of ON-OFF control circuit |
| WO2018233423A1 (en) * | 2017-06-19 | 2018-12-27 | 广州金升阳科技有限公司 | On-off control circuit |
| CN107171560B (en) * | 2017-06-19 | 2019-06-25 | 广州金升阳科技有限公司 | A kind of ON-OFF control circuit |
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