CN205900443U - Electromagnetic relay - Google Patents
Electromagnetic relay Download PDFInfo
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- CN205900443U CN205900443U CN201620666865.6U CN201620666865U CN205900443U CN 205900443 U CN205900443 U CN 205900443U CN 201620666865 U CN201620666865 U CN 201620666865U CN 205900443 U CN205900443 U CN 205900443U
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- relay
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Abstract
The utility model relates to an electromagnetic relay, including resistance R1, R2, triode S8050, inductance L1, relay, switch K, zener diode, the relay includes switch K and inductance L1, and switch K is the contact of relay promptly, resistance R1 termination input vi, the base of a termination triode, resistance R2 meets between the base and projecting pole of triode emitter ground, a relay inductance L1 termination voltage vcc, the other end links to each other with the collecting electrode of triode, the zener diode reversion connects the both ends at relay inductance L1. The utility model discloses a design has not only been played original circuit protection triode and has been avoided the effect that damages, and the opening time of the relay that has significantly reduced has moreover reduced the influence of diode afterflow to the circuit to control circuit better, this has just played effect of optimizing to the circuit.
Description
Technical field
This utility model is related to a kind of relay, more particularly, to a kind of electromagnetic relay.
Background technology
Electromagnetic relay is a kind of electronic control device, has control system and by control system, is commonly used to automatically
In control circuit.Its actually a kind of less electric current, relatively low voltage removes to control larger current, higher voltage
" automatic switch ", thus play in circuit automatically adjust, safeguard protection, the effect such as change-over circuit.
Make on-off circuit in general audion to drive in relay coil circuit, Chang Qi two ends simultaneously connect diode, that is,
Fly-wheel diode, primarily to protect audion not breakdown.When input voltage is for 0v, audion ends, relay line
Circle no current flows through, then relay release；When input voltage is+vcc, triode ON, have corresponding in relay coil
Electric current flow through, then relay adhesive.However, when input voltage is changed into 0v from+vcc, audion is changed into ending from saturation, this
Electric current in sample relay coil just loses suddenly circulation circuit.Now, if no fly-wheel diode in circuit, will be in relay
Coil two ends produce larger inverse electromotive force, and magnitude of voltage lies prostrate up to 100 more, and this voltage is added in audion plus supply voltage
On, audion will certainly be damaged.Therefore, the effect of fly-wheel diode is that inverse electromotive force is discharged by direction as shown,
To play the effect of protection audion.However, this process makes the turn-off time of relay, greatly delayed.Because afterflow
The afterflow effect of diode, when so that relay is disconnected, produces hysteresis effect.
Utility model content
Provide a kind of electromagnetic relay shortening the stagnant time in order to solve problem above this utility model.
For achieving the above object, this utility model provide following technical scheme: a kind of electromagnetic relay, including resistance r1,
R2, audion s8050, inductance l1, relay, switch k, Zener diode；Relay includes switching k and inductance l1, and switch k is
Contact for relay；Resistance r1 mono- termination input vi, the base stage of a termination audion, resistance r2 is attempted by the base stage of audion
And emitter stage between, transistor emitter is grounded；The current collection of relay inductance l1 mono- termination voltage vcc, the other end and audion
Extremely connected；Zener diode is reversely attempted by the two ends of relay inductance l1.
Design of the present utility model has not only acted as the effect of original circuit protection audion against damages, and significantly subtracts
Lack the turn-off time of relay, reduce the impact to circuit for the diode continuousing flow such that it is able to better control over circuit, this is just
Circuit is served with the effect of optimization.
Brief description
Fig. 1 is the circuit diagram of this electromagnetic relay.
Specific embodiment
The utility model is described in more detail below in conjunction with the accompanying drawings.
As shown in figure 1, this utility model provides a kind of electromagnetic relay, including resistance r1, r2, audion s8050, electricity
Sense l1, relay, switch k, Zener diode；Relay includes switching k and inductance l1, and switch k is the contact of relay；Electricity
Resistance r1 mono- termination input vi, the base stage of a termination audion, resistance r2 is attempted by between the base stage of audion and emitter stage, three poles
Pipe grounded emitter；Relay inductance l1 mono- termination voltage vcc, the other end is connected with the colelctor electrode of audion；Zener diode
Reversely it is attempted by the two ends of relay inductance l1.
Design of the present utility model makes audion become the moment of cut-off by saturation, produces induced current in relay coil,
With primary current in the same direction, relay coil two ends produce larger inverse electromotive force.Due to and connect Zener diode, backward voltage
By Zener diode reverse breakdown.The closed-loop path constituting through Zener diode and relay coil, induced current is in the loop
Gradually weaken, electromagnetic attraction also gradually weakens.Voltage due to Zener diode two ends is much larger than general-purpose diode both end voltage
(silicone tube is about 0.7v), electric current is certain, and according to p=ui, the power consumption of Zener diode can be more much larger than general-purpose diode.With
When, in coil, the energy of abrupt release is constant again.Accordingly, it is capable to amount runs out of the time required in the loop will significantly subtract
Little, thus being also greatly reduced the turn-off time of relay, this has been considerably improved the work efficiency of circuit.
The foregoing is only preferred embodiment of the present utility model, be not restricted to this utility model, for ability
For the technical staff in domain, this utility model can have various modifications and variations.All of the present utility model spirit and principle it
Interior, any modification, equivalent substitution and improvement made etc., should be included within right of the present utility model.
Claims (1)
1. a kind of electromagnetic relay is it is characterised in that include resistance r1, r2, audion s8050, inductance l1, relay, switch
K, Zener diode；Relay includes switching k and inductance l1, and switch k is the contact of relay；Resistance r1 mono- termination input
Vi, the base stage of a termination audion, resistance r2 is attempted by between the base stage of audion and emitter stage, and transistor emitter is grounded；
Relay inductance l1 mono- termination voltage vcc, the other end is connected with the colelctor electrode of audion；Zener diode is reversely attempted by relay
The two ends of device inductance l1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620666865.6U CN205900443U (en) | 2016-06-29 | 2016-06-29 | Electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620666865.6U CN205900443U (en) | 2016-06-29 | 2016-06-29 | Electromagnetic relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205900443U true CN205900443U (en) | 2017-01-18 |
Family
ID=57769393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620666865.6U Active CN205900443U (en) | 2016-06-29 | 2016-06-29 | Electromagnetic relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205900443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107784820A (en) * | 2017-11-28 | 2018-03-09 | 天津七六四通信导航技术有限公司 | A kind of telecommunication control device based on WIFI network |
-
2016
- 2016-06-29 CN CN201620666865.6U patent/CN205900443U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107784820A (en) * | 2017-11-28 | 2018-03-09 | 天津七六四通信导航技术有限公司 | A kind of telecommunication control device based on WIFI network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |