CN209461382U - A kind of power cut off delay time relay - Google Patents
A kind of power cut off delay time relay Download PDFInfo
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- CN209461382U CN209461382U CN201822254120.0U CN201822254120U CN209461382U CN 209461382 U CN209461382 U CN 209461382U CN 201822254120 U CN201822254120 U CN 201822254120U CN 209461382 U CN209461382 U CN 209461382U
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Abstract
A kind of power cut off delay time relay of the utility model, including electric power loop, timing circuit, output loop, the tank circuit being connect with timing circuit；Electric power loop is depressured 220V alternating current, output 24V DC voltage supplies subsequent timing circuit after rectification and filtering, output loop and tank circuit, the timing circuit uses integrated circuit CD4541, different delay times is realized by the way that the level of the side a and b of integrated circuit CD4541 is carried out different combinations, so as to provide the long delay of needs for the power cut off delay time relay, after power-off, capacitor C7 and capacitor C8 is delay circuit power supply, after delay reaches, capacitor C10 powers to the resetting coil R of magnetic latching relay in tank circuit, the delays time to control part of the time delay relay of the utility model is made of programmable Timer integrated circuit, therefore stability is high, delay is accurate, it is able to achieve longer delay time.
Description
Technical field
The utility model relates to a kind of relay, especially a kind of power cut off delay time relay.
Background technique
The power cut off delay time relay is exactly the trigger movement after the operating voltage of the time relay disconnects, work
Process is as follows: inside magnetic latching relay is converted to normally opened contact from normally-closed contact and keeps after the time relay is powered；With
Time relay trigger after time relay power supply is closed at family, contact continues to maintain a normally open state at this time；Time relay
The delay duration of device reaches back contact and converts back the normally closed and delay of waiting next time from normally opened.In order to allow time relay after power-off
Device can be delayed well, so the IC of power-off delay relay must be along low power consumption integrated circuit be used, inside has needed big electricity
Hold and is used as voltage accumulation of energy.Internal on the whole that two capacitors is needed to do accumulation of energy work, the electric energy of a capacitor institute accumulation of energy needs
Supplying intergrated circuit with electricity simultaneously needs to provide enough electric energy, and otherwise integrated circuit reaches not yet in timing time and just loses electric energy
And it stopped timework and purpose set by user be just not achieved；Another capacitor provides magnetic latching relay and is receiving collection
At circuit because the control signal exported after delay time arrival is to drive magnetic latching relay that can revert to original state.
The control section of the power cut off delay time relay of present all big enterprises' production mostly uses the dedicated of domestic production
Chip, the chip yield is low, temperature characterisitic is poor, delay precision is low, interference free performance is poor and the delay time that is able to achieve is short.
Summary of the invention
The purpose of the utility model is to provide a kind of delays that delays time to control part is made of programmable Timer integrated circuit
The time relay, including electric power loop, timing circuit, output loop, the tank circuit being connect with timing circuit；The delay
Circuit includes programmable Timer integrated circuit CD4541, resistance R2, potentiometer DW1, capacitor C3, capacitor C4, capacitor C5, capacitor C6
With potentiometer DW2.It is connect after potentiometer DW1 and resistance R2 series connection with 1 foot of integrated circuit CD4541, capacitor C5 and integrated circuit
2 feet of CD4541 connect, and capacitor C6 is connected in parallel with capacitor C5, the other end of potentiometer DW1, the other end of capacitor C5, capacitor
The other end of C6 is connect with 3 feet of integrated circuit CD4541, potentiometer DW2 connect with two capacitor C3, C4 in parallel after with
3 feet of integrated circuit CD4541 connect, 9 feet of another termination VSS of potentiometer DW2, integrated circuit CD4541,10 feet, 11 feet,
12 feet and 13 feet are connect with VSS, and 14 feet and 8 feet of integrated circuit CD4541 are connect with tank circuit respectively；The output
Circuit includes magnetic latching relay, diode D1, diode D2 and diode D8, includes setting inside the magnetic latching relay
Bit line circle S and resetting coil R, diode D2 connect the output end being followed by power supply output loop with set coil S, diode
The anode of D2 is connect with the anode of power supply output loop output end, and diode D1 is in parallel with set coil S, the cathode of diode D1
The cathode of diode D2 is connect, diode D8 is in parallel with resetting coil R.
Further, the tank circuit include resistance R3, resistance R4, triode T2, diode D6, voltage-stabiliser tube D7,
Capacitor C7, capacitor C8, diode D9, diode D8, triode T3, resistance R5, capacitor C9 and capacitor C10, one end of resistance R3
It is connect with the anode of power supply output loop output end, other end connecting triode T2 collector, resistance R4 is connected to triode T2
Collector and base stage between, the anode of triode T2 emitter and diode D6 connects, the cathode and capacitor C8 of diode D6
Anode connection, the cathode of capacitor C8 meets VSS, and 14 feet of integrated circuit CD4541 are connect with the anode of capacitor C8, capacitor C7 with
Capacitor C8 is in parallel, and triode T2 base stage is connect with the cathode of zener diode D7, and the anode of zener diode D7 meets VSS；Two poles
Pipe D9 is connected to the output end of electric power loop after connecting with capacitor C10, the anode and electric power loop output end of diode D9 is just
Pole connection, the resetting coil R connection of the cathode and magnetic latching relay of diode D9, the resetting coil R's of magnetic latching relay
The other end is connect with the collector of triode T3, and the resetting coil R of diode D8 and magnetic latching relay is connected in parallel, triode
It is connect after the base stage connecting resistance R5 of T3 with 8 feet of integrated circuit CD4541,8 feet of integrated circuit CD4541 and triode T3's
Capacitor C9 is connected between emitter, the emitter of triode T3 meets VSS.
Further, the electric power loop includes transformer T1, rectifier bridge B1, capacitor C1, voltage-stabiliser tube D3, voltage-stabiliser tube
D4 and capacitor C2, alternating current 220V input power circuit are exchange 24V voltage by transformer T1 decompression, and rectifier bridge B1 is to exchange
24V voltage is rectified, and capacitor C1 is connected in parallel between the output end of rectifier bridge B1, voltage-stabiliser tube D3 and voltage-stabiliser tube D4 series connection after with electricity
It is parallel with one another to hold C1, capacitor C2, it is that subsequent timing circuit and tank circuit are powered that electric power loop, which exports 24V DC voltage,.
Further, the timing circuit further includes resistance R1 and LED light D5, is connected after resistance R1 and LED light D5 series connection
It connects between electric power loop output end.Power cut off delay time relay working indicating is constituted, when power cut off delay time relay
When device is powered, light emitting diode D5 is lit.
The utility model has the advantages that
The delays time to control part of the time delay relay of the utility model is made of programmable Timer integrated circuit, therefore
Stability is high, delay is accurate, is able to achieve longer delay time.
Detailed description of the invention
Fig. 1 is the module diagram of the utility model power cut off delay time relay；
Fig. 2 is the circuit diagram of the utility model power cut off delay time relay；
Fig. 3 is the circuit diagram of the utility model electric power loop and output loop；
Fig. 4 is the circuit diagram of the utility model tank circuit and output loop；
Fig. 5 is the circuit diagram of the utility model timing circuit.
Specific embodiment
A kind of power cut off delay time relay, including electric power loop 100, timing circuit 200, output loop 300 and delay
The tank circuit 400 that circuit 200 connects.
The alternating current 220V voltage of input for being depressured, being rectified, being filtered into direct current 24V by the electric power loop 100
Voltage is that the timing circuit 200 of the power cut off delay time relay, the power supply of tank circuit 400 and output loop 300 are powered.Described
Electric power loop 100 includes that transformer T1, rectifier bridge B1, capacitor C1, voltage-stabiliser tube D3, voltage-stabiliser tube D4 and capacitor C2, alternating current 220V are defeated
Enter electric power loop 100, be exchange 24V voltage by transformer T1 decompression, rectifier bridge rectifies exchange 24V voltage, capacitor
C1 is connected in parallel between the output end of rectifier bridge B1, and capacitor C1 is to the voltage filter after rectification, voltage-stabiliser tube D3 and voltage-stabiliser tube D4 series connection
Parallel with one another with capacitor C1, capacitor C2 afterwards, voltage-stabiliser tube D3 and voltage-stabiliser tube D4 carry out pressure stabilizing to DC voltage, filter using capacitor C2
It is that subsequent timing circuit 200 and tank circuit 400 are powered that 24V DC voltage is exported after wave.
The timing circuit 200 includes programmable Timer integrated circuit CD4541, resistance R2, potentiometer DW1, capacitor
C3, capacitor C4, capacitor C5, capacitor C6 and potentiometer DW2.Potentiometer DW1 and resistance R2 series connection after with integrated circuit CD4541 1
Foot connection, capacitor C5 are connect with 2 feet of integrated circuit CD4541, and capacitor C6 is connected in parallel with capacitor C5, and potentiometer DW1's is another
End, the other end of capacitor C5, capacitor C6 the other end connect with 3 feet of integrated circuit CD4541, potentiometer DW2 and two
It is connect after capacitor C3, C4 series connection in parallel with 3 feet of integrated circuit CD4541, another termination VSS of potentiometer DW2 integrates electricity
9 feet, 10 feet, 11 feet, 12 feet and 13 feet of road CD4541 are connect with VSS, 14 feet of integrated circuit CD4541 and 8 feet difference
It is connect with tank circuit 400.
The timing circuit 200 further includes resistance R1 and light emitting diode D5, and resistance R1 and light emitting diode D5 connect
The output end for being connected in parallel on electric power loop 100 afterwards constitutes power cut off delay time relay working indicating, when the power cut off delay time
When relay power, light emitting diode D5 is lit.
Potentiometer DW1, resistance R2, capacitor C5 and C6 constitute delay time and circuit are arranged, and are set by adjusting potentiometer DW1
Set delay time required for user；Potentiometer DW2, capacitor C3 and C4 constitute internal delay time time fine tuning circuit, pass through fine tuning
Potentiometer DW2 adjusts a reference value of delay time.
Integrated circuit CD4541 internal circuit mainly by oscillator, programmable 16 grades of two-dividers, automatically and manually reset
Circuit, counter, logic control circuit of output state etc. form.12 ends foot A and 13 ends foot B are frequency divider programming inputs,
As A=0, B=0, count value 2n=8192；As A=0, B=1, count value 2n=1024；As A=1, B=0, count
Value 2n=256；As A=1, B=0, count value 2n=65536, by by the level of side a and b carry out different combinations come
Different delay times is realized, so as to provide the long delay of needs for the power cut off delay time relay.
Output loop 300 includes that magnetic latching relay, diode D1, diode D2 and diode D8, the magnetic are kept
Include set coil S and resetting coil R inside relay, is a kind of can stay set for or the closedown structure of reset state
Relay.When the both ends set coil S are powered, the contact of magnetic latching relay is attracted, if magnetic latching relay powers off at this time,
Under the magneticaction of permanent magnet, the contact of magnetic latching relay keeps attracting state；When the both ends resetting coil R are powered, magnetic is protected
Hold the contact release of relay.Diode D2 connects the output end being followed by power supply output loop 300 with set coil S, two poles
The anode of pipe D2 is connect with the anode of the output end of power supply output loop 300, and diode D1 is in parallel with set coil S, diode
The cathode of D1 connects the cathode of diode D2, and diode D8 is in parallel with resetting coil R.The effect of diode D1 is to eliminate magnetic to keep
The self-excitation voltage of relay plays the role of protecting magnetic latching relay, and diode D2 is magnetic when preventing down circuitry
The self-excitation voltage of guard relay is played a reversed role into other circuits.
The tank circuit 400 include resistance R3, resistance R4, triode T2, diode D6, voltage-stabiliser tube D7, capacitor C7,
Capacitor C8, diode D9, diode D8, triode T3, resistance R5, capacitor C9 and capacitor C10, one end of resistance R3 and power supply
The anode connection of 300 output end of output loop, other end connecting triode T2 collector, resistance R4 are connected to the collection of triode T2
Between electrode and base stage, triode T2 emitter is connect with the anode of diode D6, and the cathode and capacitor C8 of diode D6 is just
Pole connection, the cathode of capacitor C8 meet VSS, and 14 feet of integrated circuit CD4541 are connect with the anode of capacitor C8, capacitor C7 and capacitor
C8 is in parallel, and triode T2 base stage is connect with the cathode of zener diode D7, and the anode of zener diode D7 meets VSS；Diode D9
The output end of electric power loop 100, anode and 100 output end of electric power loop of diode D9 are connected to after connecting with capacitor C10
Anode connection, the resetting coil R connection of the cathode and magnetic latching relay of diode D9, the effect of diode D9 is to prevent circuit
The voltage of capacitor C10 is played a reversed role into other circuits after power-off, while the self-excitation voltage of magnetic latching relay is played a reversed role when being also prevented from power-off
Enter other circuits, the other end of the resetting coil R of magnetic latching relay is connect with the collector of triode T3, diode D8 and magnetic
The resetting coil R of guard relay is connected in parallel, 8 feet after the base stage connecting resistance R5 of triode T3 with integrated circuit CD4541
Connection, is connected with capacitor C9, the emitter of triode T3 connects between 8 feet of integrated circuit CD4541 and the emitter of triode T3
VSS。
Working principle: after circuit powers on, light emitting diode D5 is bright, indicates that electric power loop 100 is started to work, electric power loop
100 output 24V voltages, the both ends set coil S are powered, and the contact of magnetic latching relay is attracted, while being filled to tank circuit 400
Electricity, capacitor C10 charging；Triode T2 conducting, capacitor C7 and capacitor C8 charging；
After down circuitry, under the magneticaction of permanent magnet, the contact of magnetic latching relay continues to keep attracting state,
Capacitor C7 and capacitor C8 is delay circuit power supply, 200 trigger of timing circuit.Resistance R3, R4 and triode T2 form current collection
One base stage negative feedback biasing circuit of pole, resistance R3 are collector load resistor, and resistance R4 is that one base stage negative-feedback of collector is inclined
Set resistance.Pressure stabilizing D7 carries out pressure stabilizing to the base voltage of triode T2, and diode D6 prevents the voltage of capacitor C7 and C8 after power-off
It plays a reversed role into other circuits.After delay reaches, the 8 feet output control signal of the integrated circuit CD4541 of timing circuit 200, driving three
Pole pipe T3 conducting, capacitor C10 power to the resetting coil R of magnetic latching relay, the contact release of magnetic latching relay, resistance
R5 is current-limiting resistance, and capacitor C9 is played a filtering role.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (4)
1. a kind of power cut off delay time relay, which is characterized in that including electric power loop (100), timing circuit (200), output
Circuit (300), the tank circuit (400) being connect with timing circuit (200)；
The timing circuit (200) include programmable Timer integrated circuit CD4541, resistance R2, potentiometer DW1, capacitor C3,
1 foot after capacitor C4, capacitor C5, capacitor C6 and potentiometer DW2, potentiometer DW1 and resistance R2 series connection with integrated circuit CD4541
Connection, capacitor C5 are connect with 2 feet of integrated circuit CD4541, and capacitor C6 is connected in parallel with capacitor C5, and potentiometer DW1's is another
End, the other end of capacitor C5, capacitor C6 the other end connect with 3 feet of integrated circuit CD4541, potentiometer DW2 and two are simultaneously
It is connect after capacitor C3, C4 series connection of connection with 3 feet of integrated circuit CD4541, another termination VSS of potentiometer DW2, integrated circuit
9 feet, 10 feet, 11 feet, 12 feet and 13 feet of CD4541 are connect with VSS, 14 feet and 8 feet of integrated circuit CD4541 respectively with storage
It can circuit (400) connection；
The output loop (300) includes magnetic latching relay, diode D1, diode D2 and diode D8, the magnetic
It include set coil S and resetting coil R inside guard relay, diode D2 connects with set coil S to be followed by exporting in power supply
The output end in circuit (300), the anode of diode D2 are connect with the anode of power supply output loop (300) output end, diode D1
In parallel with set coil S, the cathode of diode D1 connects the cathode of diode D2, and diode D8 is in parallel with resetting coil R.
2. a kind of power cut off delay time relay according to claim 1, which is characterized in that the tank circuit
It (400) include resistance R3, resistance R4, triode T2, diode D6, voltage-stabiliser tube D7, capacitor C7, capacitor C8, diode D9, two poles
Pipe D8, triode T3, resistance R5, capacitor C9 and capacitor C10, one end and power supply output loop (300) output end of resistance R3
Anode connection, other end connecting triode T2 collector, resistance R4 are connected between the collector and base stage of triode T2, three poles
Pipe T2 emitter is connect with the anode of diode D6, and the cathode of diode D6 is connect with the anode of capacitor C8, the cathode of capacitor C8
VSS is met, 14 feet of integrated circuit CD4541 are connect with the anode of capacitor C8, and capacitor C7 and capacitor C8 are in parallel, triode T2 base stage
It is connect with the cathode of zener diode D7, the anode of zener diode D7 meets VSS；Diode D9 is connected after connecting with capacitor C10
Output end in electric power loop (100), the anode of diode D9 are connect with the anode of electric power loop (100) output end, diode
The resetting coil R connection of the cathode and magnetic latching relay of D9, the other end and triode of the resetting coil R of magnetic latching relay
The collector of T3 connects, and the resetting coil R of diode D8 and magnetic latching relay is connected in parallel, the base stage connecting resistance of triode T3
It connect after R5 with 8 feet of integrated circuit CD4541, is connected between 8 feet of integrated circuit CD4541 and the emitter of triode T3
The emitter of capacitor C9, triode T3 meet VSS.
3. a kind of power cut off delay time relay according to claim 1, which is characterized in that the electric power loop
It (100) include transformer T1, rectifier bridge B1, capacitor C1, voltage-stabiliser tube D3, voltage-stabiliser tube D4 and capacitor C2, alternating current 220V input power
Circuit (100) is exchange 24V voltage by transformer T1 decompression, and rectifier bridge B1 rectifies exchange 24V voltage, capacitor C1
Be connected in parallel between the output end of rectifier bridge B1, voltage-stabiliser tube D3 and voltage-stabiliser tube D4 series connection after it is parallel with one another with capacitor C1, capacitor C2, electricity
It is that subsequent timing circuit (200) and tank circuit (400) are powered that resource loop (100), which exports 24V DC voltage,.
4. a kind of power cut off delay time relay according to claim 1, which is characterized in that the timing circuit
(200) further include resistance R1 and LED light D5, be connected to after resistance R1 and LED light D5 series connection electric power loop (100) output end it
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254120.0U CN209461382U (en) | 2018-12-29 | 2018-12-29 | A kind of power cut off delay time relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254120.0U CN209461382U (en) | 2018-12-29 | 2018-12-29 | A kind of power cut off delay time relay |
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| CN209461382U true CN209461382U (en) | 2019-10-01 |
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| CN201822254120.0U Active CN209461382U (en) | 2018-12-29 | 2018-12-29 | A kind of power cut off delay time relay |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477500A (en) * | 2020-03-31 | 2020-07-31 | 南京优倍电气有限公司 | Starting circuit for safety relay compatible with three reset modes |
| CN114050545A (en) * | 2021-10-30 | 2022-02-15 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Arbitrarily combined delay control circuit |
-
2018
- 2018-12-29 CN CN201822254120.0U patent/CN209461382U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477500A (en) * | 2020-03-31 | 2020-07-31 | 南京优倍电气有限公司 | Starting circuit for safety relay compatible with three reset modes |
| CN114050545A (en) * | 2021-10-30 | 2022-02-15 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Arbitrarily combined delay control circuit |
| CN114050545B (en) * | 2021-10-30 | 2023-09-26 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Delay control circuit |
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