CN207651425U - A kind of relay drive circuit with delay function - Google Patents
A kind of relay drive circuit with delay function Download PDFInfo
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- CN207651425U CN207651425U CN201721791860.7U CN201721791860U CN207651425U CN 207651425 U CN207651425 U CN 207651425U CN 201721791860 U CN201721791860 U CN 201721791860U CN 207651425 U CN207651425 U CN 207651425U
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- relay
- delay function
- triode
- drive circuit
- capacitance
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Abstract
The utility model discloses a kind of relay drive circuits with delay function, including button K1, resistance R1, capacitance C1, triode Q1, relay J1；First reference voltage of termination of button K1, the anode of another termination capacitor C1, the cathode ground connection of capacitance C1；The base stage of a termination triode Q1 of resistance R1, the anode of another termination capacitor；The emitter of triode Q1 is grounded, one end of the collector connecting relay J1 of triode Q1；The relay drive circuit with delay function is free of internal processes, and delay function is realized by hardware completely；Simple in structure, reliability is high.
Description
Technical field
The utility model is related to delay technique field, more particularly to a kind of relay drive circuit with delay function.
Background technology
Relay circuit widely is gone to use in electronic system, and the general relay circuit with delay function is past
Toward being to remove control delay function by SCM system, drive signal is then sent out by SCM system after waiting delay, to
Control the actuating of relay.
But require reliability higher at some, and simultaneously for the place that delay function is of less demanding, above-mentioned microcontroller
The relay circuit of control can not be received by user, require a kind of relay that can have delay function in this way
Device driving circuit, and this circuit is necessary for pure electronic circuit, can not contain the electronic chip of program store function.
Utility model content
The purpose of this utility model is to provide a kind of relay drive circuit with delay function.
For this purpose, technical solutions of the utility model are as follows：
A kind of relay drive circuit with delay function, including button K1, resistance R1, capacitance C1, triode Q1, after
Electric appliance J1；First reference voltage of termination of button K1, the anode of another termination capacitor C1, the cathode ground connection of capacitance C1；Resistance
The base stage of a termination triode Q1 of R1, the anode of another termination capacitor；The emitter of triode Q1 is grounded, the collection of triode Q1
One end of electrode contact relay J1, the second reference voltage of another termination of relay J1.
Further, first reference voltage is+3.3V；Second reference voltage is+24V.
Compared with prior art, the relay drive circuit with delay function is somebody's turn to do with following advantage：
The relay drive circuit with delay function is free of internal processes, and delay function is realized by hardware completely；
Simple in structure, reliability is high.
Description of the drawings
Fig. 1 is the relay drive circuit figure provided by the utility model with delay function.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment is described further the utility model, but following embodiments are right absolutely not
The utility model has any restrictions.
Embodiment 1：
A kind of relay drive circuit with delay function, as shown in Figure 1, including button K1, resistance R1, capacitance C1,
Triode Q1, relay J1；First reference voltage of termination of button K1, the anode of another termination capacitor C1, capacitance C1's is negative
Pole is grounded；The base stage of a termination triode Q1 of resistance R1, the anode of another termination capacitor；The emitter of triode Q1 is grounded,
One end of the collector connecting relay J1 of triode Q1, the second reference voltage of another termination of relay J1；Wherein, the first reference
Voltage is+3.3V；Second reference voltage is+24V.
The course of work of relay drive circuit provided by the utility model with delay function is as follows：
When button K1 is pressed, the base voltage of triode Q1 becomes the first reference voltage 3.3V, at this point, three poles
The emitter voltage of pipe Q1 is 0V, and the pressure difference between triode Q1 base stages and emitter is more than 0, therefore, triode Q1 collectors
Circuit turn-on between emitter, and relay J1 is driven to be attracted so that 3,4,5 pin status of relay J1 change,
During this, capacitance C1 constantly charges；When button K1 is released, since capacitance C1 is stored for energy, still
It can so ensure that the pressure difference between triode Q1 base stages and emitter is more than 0, so relay J1 remains able to maintain conducting
State, until the energy in capacitance C1 is consumed and finishes.
Capacitance size by adjusting capacitance C1 can be adjusted after button K1 is released, and relay continuation of insurance is held
Time.
Simultaneously as capacitance C1 charging current very littles, it is possible to avoid because being caused by high current in button K1, button
The problem of K1 adhesions.
Claims (2)
1. a kind of relay drive circuit with delay function, which is characterized in that including button K1, resistance R1, capacitance C1, three
Pole pipe Q1, relay J1；First reference voltage of termination of button K1, the anode of another termination capacitor C1, the cathode of capacitance C1
Ground connection；The base stage of a termination triode Q1 of resistance R1, the anode of another termination capacitor；The emitter of triode Q1 is grounded, and three
One end of the collector connecting relay J1 of pole pipe Q1, the second reference voltage of another termination of relay J1.
2. the relay drive circuit according to claim 1 with delay function, which is characterized in that first ginseng
It is+3.3V to examine voltage；Second reference voltage is+24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721791860.7U CN207651425U (en) | 2017-12-20 | 2017-12-20 | A kind of relay drive circuit with delay function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721791860.7U CN207651425U (en) | 2017-12-20 | 2017-12-20 | A kind of relay drive circuit with delay function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207651425U true CN207651425U (en) | 2018-07-24 |
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ID=62877724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721791860.7U Active CN207651425U (en) | 2017-12-20 | 2017-12-20 | A kind of relay drive circuit with delay function |
Country Status (1)
| Country | Link |
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| CN (1) | CN207651425U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036963A (en) * | 2018-08-02 | 2018-12-18 | 欣旺达电动汽车电池有限公司 | A kind of contactor control circuit |
| CN110211827A (en) * | 2019-05-15 | 2019-09-06 | 杭州天马时控科技股份有限公司 | A kind of processing method reducing the nigrescence carbonization of timer contact |
-
2017
- 2017-12-20 CN CN201721791860.7U patent/CN207651425U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036963A (en) * | 2018-08-02 | 2018-12-18 | 欣旺达电动汽车电池有限公司 | A kind of contactor control circuit |
| CN110211827A (en) * | 2019-05-15 | 2019-09-06 | 杭州天马时控科技股份有限公司 | A kind of processing method reducing the nigrescence carbonization of timer contact |
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| GR01 | Patent grant |