CN106158510A - A kind of control relay circuit - Google Patents
A kind of control relay circuit Download PDFInfo
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- CN106158510A CN106158510A CN201510194346.4A CN201510194346A CN106158510A CN 106158510 A CN106158510 A CN 106158510A CN 201510194346 A CN201510194346 A CN 201510194346A CN 106158510 A CN106158510 A CN 106158510A
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- resistance
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- relay
- electric capacity
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Abstract
The invention discloses a kind of control relay circuit, including resistance R1, resistance R2, electric capacity C1, audion VT1, diode D1 and relay K.The present invention utilizes the half of the holding voltage ratio pick-up voltage of relay also low, in the moment that relay is triggered, a sufficiently high instantaneous voltage is provided at the two ends of its control coil, so that it reliablely and stablely works in the case of low supply voltage is powered, save cost, be suitable for promoting the use of.
Description
Technical field
The present invention relates to a kind of control circuit, specifically a kind of control relay circuit.
Background technology
Relay usually requires that the control voltage being added on its coil can reliablely and stablely work higher than its pick-up voltage, because of
This, in the control relay circuit that low supply voltage is powered, limit the use of high pick-up voltage relay, then,
Additionally have to individually add one group of high-voltage power supply for relay control circuit, to meet the requirement of relay pick-up voltage, so
Volume and cost can be increased.
Summary of the invention
It is an object of the invention to provide the control relay circuit under a kind of low-voltage, to solve above-mentioned background technology proposes
Problem.
For achieving the above object, the present invention provides following technical scheme:
A kind of control relay circuit, including resistance R1, resistance R2, electric capacity C1, audion VT1, diode D1 with continue
Electrical equipment K, described resistance R1 one end connect input signal Ui, the resistance R1 other end connect respectively resistance R2, resistance R3 and
Ground capacity C1, the resistance R2 other end connects resistance R4, resistance R6, resistance R7, switch S and audion VT4 respectively
Emitter stage, described resistance R3 other end connecting triode VT1 base stage, it is another that audion VT1 colelctor electrode connects resistance R4 respectively
One end and audion VT2 base stage, audion VT1 emitter stage connects earth resistance R5 and audion VT2 emitter stage respectively,
Audion VT2 colelctor electrode connects the resistance R6 other end and diode D1 negative pole, diode D1 positive pole connecting triode respectively
VT3 base stage, audion VT3 grounded emitter, audion VT3 colelctor electrode connects the resistance R7 other end, electric capacity C2 respectively
With resistance R8, the electric capacity C2 other end connects relay K coil and ground connection diode D2 positive pole respectively, and relay K coil is another
One end connecting triode VT4 colelctor electrode, audion VT4 base stage connects the resistance R8 other end, and the described switch S other end is even
Meet power supply VCC.
As the present invention further scheme: described power supply VCC voltage is 12V.
Compared with prior art, the invention has the beneficial effects as follows: the present invention utilizes the holding voltage ratio pick-up voltage of relay
Half is also low, in the moment that relay is triggered, provides a sufficiently high instantaneous voltage at the two ends of its control coil,
So that it reliablely and stablely works in the case of low supply voltage is powered, save cost, be suitable for promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of control relay circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of protection of the invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of control relay circuit, including resistance R1, resistance R2, electric capacity
C1, audion VT1, diode D1 and relay K, resistance R1 one end connects input signal Ui, and the resistance R1 other end divides
Not Lian Jie resistance R2, resistance R3 and ground capacity C1, the resistance R2 other end connects resistance R4, resistance R6, resistance respectively
R7, switch S and audion VT4 emitter stage, described resistance R3 other end connecting triode VT1 base stage, audion VT1
Colelctor electrode connects the resistance R4 other end and audion VT2 base stage respectively, and audion VT1 emitter stage connects earth resistance respectively
R5 and audion VT2 emitter stage, audion VT2 colelctor electrode connects the resistance R6 other end and diode D1 negative pole respectively, and two
Pole pipe D1 positive pole connecting triode VT3 base stage, audion VT3 grounded emitter, audion VT3 colelctor electrode connects respectively
The resistance R7 other end, electric capacity C2 and resistance R8, the electric capacity C2 other end connects relay K coil and ground connection diode respectively
D2 positive pole, relay K coil other end connecting triode VT4 colelctor electrode, audion VT4 base stage connect resistance R8 another
End, the described switch S other end connects power supply VCC.
Power supply VCC voltage is 12V.
The operation principle of the present invention is: refer to Fig. 1, resistance R1～R6, electric capacity C1, audion VT1 and audion VT2
Composition Schmidt trigger testing circuit, for the various control signal shapings by input, produces the height of a rapid rising
Level signal, resistance R7, audion VT5 and audion VT3 form an electrical switch, resistance R8, electric capacity C2, three
Pole pipe VT6 and audion VT4 forms the drive circuit of high pick-up voltage relay, when the moment that switch S switches on power, electricity
Hold C1 to be charged by resistance R2, owing to electric capacity C1 both end voltage can not be suddenlyd change so that audion VT1 connects because base stage is instantaneous
Ground and end, audion VT2 turn on, audion VT3 is in cut-off state, then, electric capacity C2 pass through resistance R7 and three
Pole pipe VT2 quick charge ends to supply voltage, audion VT4, and relay K coil no current passes through, as electric capacity C1
When charging to triggering level (the about 3.67V) of Schmidt trigger, audion VT1 turns on, and audion VT2 ends, three poles
The colelctor electrode of pipe VT2 exports the high level signal voltage that a forward position is precipitous, punctures audion VT5, makes audion VT3 fast
Speed saturation conduction, the base stage of audion VT4 to ground, makes three poles by the CE knot near short circuit of resistance R8 and audion VT3
Pipe VT4 saturation conduction, its collector voltage is close to supply voltage, and meanwhile, the positive pole of electrochemical capacitor C2 is also by audion
The CE knot near short circuit of VT3 is to ground.Owing to having been charged with the supply voltage of positive polarity on electric capacity C2, so time its negative pole on
Current potential is nagative potential, and the voltage being therefore added to relay K coil two ends is approximately equal to the supply voltage of twice (about about 24V),
So that relay K reliably adhesive.Subsequently, electric capacity C2 is discharged to zero by the CE knot of audion VT3, and circuit is started shooting
After Wen Ding, voltage about about the 12V being added on relay K coil two ends, make relay K keep attracting state, when being subject to
Audion VT1 is made to end by R1 to Schmidt trigger testing circuit one negative voltage of input during control circuit malfunctions,
Audion VT2 turns on, and audion VT3 ends, and electric capacity C2 is electric to power supply by resistance R7 and audion VT6 quick charge
Pressure, audion VT4 ends, and relay K coil losing electricity, the action of relay K contact makes controlled circuit be protected.When
After controlled circuit fault is eliminated, audion VT1 turns on, and audion VT2 ends, and audion VT3 and audion VT4 leads
Logical, relay K obtains electric adhesive, and relay contact makes controlled circuit recover normal operating conditions.
Claims (2)
1. a control relay circuit, including resistance R1, resistance R2, electric capacity C1, audion VT1, diode D1 and
Relay K, it is characterised in that described resistance R1 one end connects input signal Ui, and the resistance R1 other end connects resistance respectively
R2, resistance R3 and ground capacity C1, the resistance R2 other end connects resistance R4, resistance R6, resistance R7, switch S respectively
With audion VT4 emitter stage, described resistance R3 other end connecting triode VT1 base stage, audion VT1 colelctor electrode is respectively
Connecting the resistance R4 other end and audion VT2 base stage, audion VT1 emitter stage connects earth resistance R5 and audion respectively
VT2 emitter stage, audion VT2 colelctor electrode connects the resistance R6 other end and diode D1 negative pole, diode D1 positive pole respectively
Connecting triode VT3 base stage, audion VT3 grounded emitter, audion VT3 colelctor electrode connect respectively resistance R7 another
End, electric capacity C2 and resistance R8, the electric capacity C2 other end connects relay K coil and ground connection diode D2 positive pole respectively, continues
Electrical equipment K coil other end connecting triode VT4 colelctor electrode, audion VT4 base stage connect the resistance R8 other end, described in open
Close the S other end and connect power supply VCC.
Control relay circuit the most according to claim 1, it is characterised in that described power supply VCC voltage is 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194346.4A CN106158510A (en) | 2015-04-22 | 2015-04-22 | A kind of control relay circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194346.4A CN106158510A (en) | 2015-04-22 | 2015-04-22 | A kind of control relay circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106158510A true CN106158510A (en) | 2016-11-23 |
Family
ID=57346346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510194346.4A Pending CN106158510A (en) | 2015-04-22 | 2015-04-22 | A kind of control relay circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106158510A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411128A (en) * | 2016-11-24 | 2017-02-15 | 郑州艾莫弗信息技术有限公司 | Switch power supply control circuit |
| CN107479456A (en) * | 2017-10-21 | 2017-12-15 | 河南寰球航空装备科技有限公司 | A kind of intelligent driven controlling system |
| CN107591886A (en) * | 2017-10-21 | 2018-01-16 | 河南寰球航空装备科技有限公司 | A kind of robot power control module |
-
2015
- 2015-04-22 CN CN201510194346.4A patent/CN106158510A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411128A (en) * | 2016-11-24 | 2017-02-15 | 郑州艾莫弗信息技术有限公司 | Switch power supply control circuit |
| CN106411128B (en) * | 2016-11-24 | 2018-08-03 | 乌鲁木齐市英格科技开发有限公司 | A kind of switching power source control circuit |
| CN107479456A (en) * | 2017-10-21 | 2017-12-15 | 河南寰球航空装备科技有限公司 | A kind of intelligent driven controlling system |
| CN107591886A (en) * | 2017-10-21 | 2018-01-16 | 河南寰球航空装备科技有限公司 | A kind of robot power control module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |
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| WD01 | Invention patent application deemed withdrawn after publication |