CN110517931B - Time delay circuit with positive and negative suppression function of voltage - Google Patents
Time delay circuit with positive and negative suppression function of voltage Download PDFInfo
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- CN110517931B CN110517931B CN201910784685.6A CN201910784685A CN110517931B CN 110517931 B CN110517931 B CN 110517931B CN 201910784685 A CN201910784685 A CN 201910784685A CN 110517931 B CN110517931 B CN 110517931B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
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Abstract
The invention provides a delay circuit with a positive and negative voltage suppression function; the power supply circuit comprises a forward and reverse suppression voltage circuit, a control delay circuit and a power driving circuit, wherein the forward and reverse suppression voltage circuit is connected with a power supply and then is connected with the control delay circuit to control the conduction of the power driving circuit, and the power driving circuit is started and is also connected with the power supply through a starting coil to control the starting of a contactor. The invention is composed of the rectifier diode, the delay circuit and the MOS tube, replaces the traditional mechanical auxiliary point of the double coils, the circuit closes the MOS tube after delaying for 140ms, the starting and holding coils of the contactor of the double coils are connected in series, the volume and the weight are small, the reliability is high, the response time is short, and the anti-jamming capability is strong.
Description
Technical Field
The invention relates to a delay circuit with a positive and negative voltage suppressing function.
Background
The contactors with the double-coil structures are provided with coil auxiliary points, and the coils are inductive devices, so that the contactors can generate larger electric sparks when the coil auxiliary points are opened. The electric spark ablates the auxiliary point of the coil, long-time ablation can cause the aggregation of carbide on the surface of the contact, a certain amount of carbide aggregation can cause the increase of the starting resistance of the coil, even the coil can not be started normally, so that the time delay circuit with the forward and reverse voltage suppression function is provided to replace the traditional mechanical auxiliary point, and the problem that the contactor can not be started due to the aggregation of the carbide ablated by the contact is solved.
Disclosure of Invention
In order to solve the technical problem, the invention provides a delay circuit with a forward and reverse voltage suppressing function.
The invention is realized by the following technical scheme.
The invention provides a delay circuit with a positive and negative voltage suppression function; the power supply control circuit comprises a forward and reverse suppression voltage circuit, a control delay circuit and a power driving circuit, wherein the forward and reverse suppression voltage circuit is connected with a power supply and then connected with the control delay circuit to control the conduction of the power driving circuit, and the power driving circuit is started and is also connected with the power supply through a starting coil to control the starting of a contactor.
The forward and reverse voltage suppression circuit comprises a voltage stabilizing diode D3, a voltage stabilizing diode D5 and a diode D2, wherein the cathodes of the voltage stabilizing diode D3 and the voltage stabilizing diode D5 are sequentially connected with the ground electrode of a power supply, the cathodes of the voltage stabilizing diode D3 and the diode D2 are sequentially connected with the anode of the power supply, the anode of the voltage stabilizing diode D5 is connected with the anode of the diode D2, the cathode of the diode D2 is also connected with the anode of the diode D1, the cathode of the diode D1 is connected with a resistor R1, and the other end of the resistor R1 is connected with a control delay circuit.
The control delay circuit comprises a capacitor C1, a capacitor C3 and a capacitor C4, wherein one end of the capacitor C1, the capacitor C3 and the capacitor C4 which are connected in parallel are connected with a parallel line of a resistor R1 and the cathode of a voltage stabilizing diode D4, the other end of the capacitor C1 is connected with a resistor R2, the other end of the resistor R2 is sequentially connected with the cathode of a resistor R3, a capacitor C2 and the cathode of a voltage stabilizing diode D6, the anode of the voltage stabilizing diode D4, the end of the capacitor C4 connected with the resistor R1, the other end of the resistor R3, the other end of the capacitor C2 and the anode of the voltage stabilizing diode D6 are connected with a ground terminal GND, the cathode of the voltage stabilizing diode D4 is also connected with a control signal T1, and the cathode of the voltage stabilizing diode D6 is connected with the control signal T2.
The power driving circuit comprises a MOS tube Q1, the grid electrode of the MOS tube Q1 is connected with the negative electrode of a voltage stabilizing diode D6, the source electrode is grounded, the drain electrode is connected with the negative electrode of a diode D7, the positive electrode of a diode D7 is connected with a parallel circuit of a starting coil and a holding coil through MID, the other end of the starting coil is connected with the positive electrode of a power supply, and the other end of the holding coil is connected with the ground electrode of the power supply.
The zener diode D3 is a bidirectional zener diode.
The invention has the beneficial effects that: the circuit is composed of a rectifier diode, a delay circuit and an MOS (metal oxide semiconductor) tube, replaces the traditional mechanical auxiliary point of a double coil, closes the MOS tube after the circuit delays for 140ms, and enables a contactor of the double coil to be connected with a holding coil in series, so that the circuit is small in volume and weight, high in reliability, short in response time and strong in anti-interference capability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
A delay circuit with forward and reverse voltage suppression function; the power supply control circuit comprises a forward and reverse suppression voltage circuit, a control delay circuit and a power driving circuit, wherein the forward and reverse suppression voltage circuit is connected with a power supply and then connected with the control delay circuit to control the conduction of the power driving circuit, and the power driving circuit is started and is also connected with the power supply through a starting coil to control the starting of a contactor.
The forward and reverse voltage suppression circuit comprises a voltage stabilizing diode D3, a voltage stabilizing diode D5 and a diode D2, wherein the cathodes of the voltage stabilizing diode D3 and the voltage stabilizing diode D5 are sequentially connected with the ground electrode of a power supply, the cathodes of the voltage stabilizing diode D3 and the diode D2 are sequentially connected with the anode of the power supply, the anode of the voltage stabilizing diode D5 is connected with the anode of the diode D2, the cathode of the diode D2 is also connected with the anode of the diode D1, the cathode of the diode D1 is connected with a resistor R1, and the other end of the resistor R1 is connected with a control delay circuit.
The control delay circuit comprises a capacitor C1, a capacitor C3 and a capacitor C4, wherein one end of the capacitor C1, the capacitor C3 and the capacitor C4 which are connected in parallel are connected with a parallel line of a resistor R1 and the cathode of a voltage stabilizing diode D4, the other end of the capacitor C1 is connected with a resistor R2, the other end of the resistor R2 is sequentially connected with the cathode of a resistor R3, a capacitor C2 and the cathode of a voltage stabilizing diode D6, the anode of the voltage stabilizing diode D4, the end of the capacitor C4 connected with the resistor R1, the other end of the resistor R3, the other end of the capacitor C2 and the anode of the voltage stabilizing diode D6 are connected with a ground terminal GND, the cathode of the voltage stabilizing diode D4 is also connected with a control signal T1, and the cathode of the voltage stabilizing diode D6 is connected with the control signal T2.
The power driving circuit comprises a MOS tube Q1, the grid electrode of the MOS tube Q1 is connected with the negative electrode of a voltage stabilizing diode D6, the source electrode is grounded, the drain electrode is connected with the negative electrode of a diode D7, the positive electrode of a diode D7 is connected with a parallel circuit of a starting coil and a holding coil through MID, the other end of the starting coil is connected with the positive electrode of a power supply, and the other end of the holding coil is connected with the ground electrode of the power supply.
The zener diode D3 is a bidirectional zener diode.
The circuit principle is as follows: when the circuit is electrified, one path of current passes through D1 and R1 to charge capacitors C1, C3 and C4, at the moment of electrification, the capacitors C1, C3 and C4 induce 12V voltage at two ends due to the voltage stabilizing effect of a voltage stabilizing diode D4, the MOS tube is directly conducted, the other path of current passes through a starting coil, passes through D7, reaches the MOS tube, returns to the cathode of a power supply through the MOS tube, the contactor is quickly started, at the moment, the capacitors C1, C3 and C4 and resistors R3 and R2 form a discharge loop, the MOS tube is closed when the voltage of the MOS tube 1 is reduced to 4.5V, and the coil keeps a winding connected with the starting winding in series to finish the action. The forward and reverse voltage suppression circuit device is composed of D3, D2 and D5, and a coil is an inductive element, so that large impact is generated when the coil is switched on and off, and large impact voltage is discharged through D3, D2 and D5 when the coil is switched on and off.
Claims (3)
1. The utility model provides a delay circuit with positive reverse suppression function of voltage which characterized in that: the power drive circuit is connected with a power supply and then connected with the control delay circuit to control the conduction of the power drive circuit, the power drive circuit is started and is also connected with the power supply through a starting coil to control the starting of a contactor, the control delay circuit comprises a capacitor C1, a capacitor C3 and a capacitor C4, one end of the capacitor C1, the capacitor C3 and the capacitor C4 which are connected in parallel is connected with a parallel line of a resistor R1 and the cathode of a voltage stabilizing diode D4, the other end of the capacitor C3525 is connected with a resistor R2, the other end of the resistor R2 is sequentially connected with a resistor R3, a capacitor C2 and the cathode of a voltage stabilizing diode D6, the anode of the voltage stabilizing diode D4, one end of the capacitor C4 and the resistor R1, the other end of the resistor R3, the other end of the capacitor C2 and the anode of the voltage stabilizing diode D6 are connected with a ground terminal, and the cathode of the voltage stabilizing diode D4 is connected with a control signal T1, the negative electrode of the voltage stabilizing diode D6 is connected with a control signal T2, the forward and reverse voltage suppression circuit comprises a voltage stabilizing diode D3, a voltage stabilizing diode D5 and a diode D2, the negative electrodes of the voltage stabilizing diode D3 and the voltage stabilizing diode D5 are sequentially connected with the ground electrode of a power supply, the negative electrodes of the voltage stabilizing diode D3 and the diode D2 are sequentially connected with the positive electrode of the power supply, the positive electrode of the voltage stabilizing diode D5 is connected with the positive electrode of the diode D2, the negative electrode of the diode D2 is also connected with the positive electrode of the diode D1, the negative electrode of the diode D1 is connected with a resistor R1, and the other end of the resistor R1 is connected with a control delay circuit.
2. The delay circuit having a forward and reverse voltage suppressing function as claimed in claim 1, wherein: the power driving circuit comprises a MOS tube Q1, the grid electrode of the MOS tube Q1 is connected with the negative electrode of a voltage stabilizing diode D6, the source electrode is grounded, the drain electrode is connected with the negative electrode of a diode D7, the positive electrode of a diode D7 is connected with a parallel circuit of a starting coil and a holding coil through MID, the other end of the starting coil is connected with the positive electrode of a power supply, and the other end of the holding coil is connected with the ground electrode of the power supply.
3. The delay circuit having a forward and reverse voltage suppressing function as claimed in claim 1, wherein: the zener diode D3 is a bidirectional zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910784685.6A CN110517931B (en) | 2019-08-23 | 2019-08-23 | Time delay circuit with positive and negative suppression function of voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910784685.6A CN110517931B (en) | 2019-08-23 | 2019-08-23 | Time delay circuit with positive and negative suppression function of voltage |
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| Publication Number | Publication Date |
|---|---|
| CN110517931A CN110517931A (en) | 2019-11-29 |
| CN110517931B true CN110517931B (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910784685.6A Active CN110517931B (en) | 2019-08-23 | 2019-08-23 | Time delay circuit with positive and negative suppression function of voltage |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205249163U (en) * | 2015-11-27 | 2016-05-18 | 珠海中慧微电子股份有限公司 | Twin coil direct current contactor's start control circuit |
| CN106026626A (en) * | 2016-06-29 | 2016-10-12 | 浪潮集团有限公司 | Surge current suppressor based on RC time delay circuit |
| CN205693386U (en) * | 2016-04-15 | 2016-11-16 | 广东金莱特电器股份有限公司 | New type solar energy plate postpones overcharge protection circuit |
| CN206849776U (en) * | 2017-06-06 | 2018-01-05 | 北京京唐德信轨道设备有限公司 | A kind of protection circuit for avoiding car door traveling from opening by mistake based on safety relay |
| CN208111352U (en) * | 2018-03-30 | 2018-11-16 | 欣灵电气股份有限公司 | A kind of time relay circuit |
-
2019
- 2019-08-23 CN CN201910784685.6A patent/CN110517931B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205249163U (en) * | 2015-11-27 | 2016-05-18 | 珠海中慧微电子股份有限公司 | Twin coil direct current contactor's start control circuit |
| CN205693386U (en) * | 2016-04-15 | 2016-11-16 | 广东金莱特电器股份有限公司 | New type solar energy plate postpones overcharge protection circuit |
| CN106026626A (en) * | 2016-06-29 | 2016-10-12 | 浪潮集团有限公司 | Surge current suppressor based on RC time delay circuit |
| CN206849776U (en) * | 2017-06-06 | 2018-01-05 | 北京京唐德信轨道设备有限公司 | A kind of protection circuit for avoiding car door traveling from opening by mistake based on safety relay |
| CN208111352U (en) * | 2018-03-30 | 2018-11-16 | 欣灵电气股份有限公司 | A kind of time relay circuit |
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| Publication number | Publication date |
|---|---|
| CN110517931A (en) | 2019-11-29 |
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