CN212209348U - Magnetic latching relay anti-interference drive circuit - Google Patents
Magnetic latching relay anti-interference drive circuit Download PDFInfo
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- CN212209348U CN212209348U CN202021463132.5U CN202021463132U CN212209348U CN 212209348 U CN212209348 U CN 212209348U CN 202021463132 U CN202021463132 U CN 202021463132U CN 212209348 U CN212209348 U CN 212209348U
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- magnetic latching
- latching relay
- power supply
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Abstract
The utility model discloses a magnetic latching relay jam-proof drive circuit who belongs to magnetic latching relay technical field, including power supply switch control circuit and magnetic latching relay circuit, wherein, power supply switch control circuit and magnetic latching relay circuit connection, magnetic latching relay circuit is connected with terminal P1. The utility model adopts the control mode of output according to the requirement for the coil driving power supply of the magnetic latching relay K1, and when the contact of the magnetic latching relay K1 is in the holding state, the power supply of the coil of the relay K1 is disconnected; the utility model discloses when receiving external signal interference, magnetic latching relay K1 can not produce the malfunction, has characteristics such as simple structure, practicality height, switching response speed are fast, control is accurate and stability height.
Description
Technical Field
The utility model belongs to the technical field of the magnetic latching relay, concretely relates to magnetic latching relay jam-proof drive circuit.
Background
In the modern electronic technology field, relays are widely used as an isolated switch control device. Magnetic latching relays are a new type of relay that has developed in recent years. All act as a switch, turning the circuit on and off, as in conventional relays. The difference is that the closing or opening of the magnetic latching relay completely depends on the action of the permanent magnet, and only when the state is switched, an electric signal with a certain width is needed to trigger to complete the action.
As a switching device which is the core of a circuit, the action accuracy of a relay is crucial, the function of a product is influenced, and even safety accidents can be caused, so that great requirements are made on the stability and the anti-interference capability of the relay.
The problems existing in the prior art are as follows: when the magnetic latching electric appliance is in an idle state, the power supply of the relay coil is not disconnected, and false operation is easy to generate due to external interference.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a magnetic latching relay jam-proof drive circuit has simple structure, practicality height, switches characteristics that response speed is fast, control is accurate.
In order to achieve the above object, the utility model provides a following technical scheme: a magnetic latching relay anti-interference drive circuit comprises a power supply switch control circuit and a magnetic latching relay circuit, wherein the power supply switch control circuit is connected with the magnetic latching relay circuit, and the magnetic latching relay circuit is connected with a terminal P1.
As the utility model discloses a preferred technical scheme, power supply switch control circuit includes triode Q2, and triode Q2's base is connected with resistance R4's one end, and resistance R4's other end connection control signal, triode Q2's projecting pole are connected with the earthing terminal, and triode Q2's collecting electrode is connected with resistance R3's one end.
As the utility model discloses a preferred technical scheme, power supply switch control circuit includes resistance R5, and the one end of resistance R5 is connected with triode Q2's base, and resistance R5's the other end is connected with triode Q2's projecting pole.
As the utility model discloses a preferred technical scheme, power supply switch control circuit includes triode Q1, and triode Q1's base is connected with resistance R3's the other end, and triode Q1's projecting pole is connected with the power positive pole, and triode Q1's collecting electrode and magnetic latching relay circuit are connected.
As the utility model discloses a preferred technical scheme, power supply switch control circuit includes diode D1 and diode D2, and wherein, diode D1's negative pole is connected with triode Q1's projecting pole, and diode D1's positive pole is connected with triode Q1's collecting electrode, and diode D2's positive pole is connected with triode Q1's base, and diode D2's negative pole is connected with triode Q1's projecting pole.
As the preferred technical scheme of the utility model, power supply switch control circuit includes resistance R1 and resistance R2, and wherein, resistance R1's one end is connected with triode Q1's collecting electrode, and resistance R1's the other end is connected with the earthing terminal, and resistance R2's one end is connected with the power positive pole, and resistance R2's the other end is connected with triode Q2's collecting electrode.
As a preferred embodiment of the present invention, a capacitor C1 is connected in parallel to both ends of the resistor R3.
As the preferred technical scheme of the utility model, magnetic latching relay circuit includes magnetic latching relay K1, and 1 foot and 2 feet of magnetic latching relay K1 are connected with logic control signal respectively, and 4 feet of magnetic latching relay K1 are connected with 1 foot of terminal P1, and 3 feet of magnetic latching relay K1 are connected with 2 feet of terminal P1, and 5 feet of magnetic latching relay K1 are connected with triode Q1's collecting electrode.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model adopts the control mode of output according to the requirement for the coil driving power supply of the magnetic latching relay K1, and when the contact of the magnetic latching relay K1 is in the holding state, the power supply of the coil of the relay K1 is disconnected;
2. the utility model discloses when receiving external signal interference, magnetic latching relay K1 can not produce the malfunction, has characteristics such as simple structure, practicality height, switching response speed are fast, control is accurate and stability height.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of a power supply switch control circuit of the present invention;
fig. 2 is a schematic diagram of the magnetic latching relay circuit of the present invention;
fig. 3 is a schematic view of the terminal of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-3, the present invention provides the following technical solutions: a magnetic latching relay anti-interference drive circuit comprises a power supply switch control circuit and a magnetic latching relay circuit, wherein the power supply switch control circuit is connected with the magnetic latching relay circuit, and the magnetic latching relay circuit is connected with a terminal P1.
Specifically, the power supply switch control circuit includes an NPN transistor Q2, a base of the NPN transistor Q2 is connected to one end of a resistor R4, the other end of the resistor R4 is connected to a control signal, an emitter of the NPN transistor Q2 is connected to a ground terminal, and a collector of the NPN transistor Q2 is connected to one end of a resistor R3.
Specifically, the power supply switch control circuit comprises a resistor R5, one end of the resistor R5 is connected with the base electrode of the NPN type triode Q2, and the other end of the resistor R5 is connected with the emitter electrode of the NPN type triode Q2.
Specifically, the power supply switch control circuit comprises a PNP type triode Q1, the base of the PNP type triode Q1 is connected with the other end of the resistor R3, the emitting electrode of the PNP type triode Q1 is connected with the positive electrode of a power supply, and the collecting electrode of the PNP type triode Q1 is connected with the magnetic latching relay circuit.
Specifically, the power supply switch control circuit comprises a diode D1 and a diode D2, wherein the cathode of the diode D1 is connected with the emitter of the PNP transistor Q1, the anode of the diode D1 is connected with the collector of the PNP transistor Q1, the anode of the diode D2 is connected with the base of the PNP transistor Q1, and the cathode of the diode D2 is connected with the emitter of the PNP transistor Q1.
Specifically, the power supply switch control circuit comprises a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected with the collector of the PNP type triode Q1, the other end of the resistor R1 is connected with the ground terminal, one end of the resistor R2 is connected with the positive electrode of the power supply, and the other end of the resistor R2 is connected with the collector of the triode Q2.
Specifically, a capacitor C1 is connected in parallel to both ends of the resistor R3.
Specifically, the magnetic latching relay circuit comprises a magnetic latching relay K1, wherein pins 1 and 2 of a magnetic latching relay K1 are respectively connected with logic control signals, pin 4 of a magnetic latching relay K1 is connected with pin 1 of a terminal P1, pin 3 of a magnetic latching relay K1 is connected with pin 2 of a terminal P1, and pin 5 of a magnetic latching relay K1 is connected with a collector of a PNP type triode Q1.
In practical use of the present embodiment, the MCU outputs a high level control signal to the base of the NPN transistor Q2, the NPN transistor Q2 enters a conducting state, the collector of the NPN transistor Q2 pulls the level down to a low level, the base of the PNP transistor Q1 is at a low level, the PNP transistor Q1 enters a conducting state, the pin 5 of the magnetic latching relay K1 outputs a high level, when the MCU outputs a low level control signal, the NPN transistor Q2 is turned off, the collector of the NPN transistor Q2 is at a high level, the PNP transistor Q1 is turned off, and the power supply of the magnetic latching relay K1 is turned off.
To sum up, the utility model adopts the control mode of output according to the requirement for the coil driving power supply of the magnetic latching relay K1, and when the contact of the magnetic latching relay K1 is in the holding state, the power supply of the coil of the relay K1 is cut off; the utility model discloses when receiving external signal interference, magnetic latching relay K1 can not produce the malfunction, has characteristics such as simple structure, practicality height, switching response speed are fast, control is accurate and stability height.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a magnetic latching relay jam-proof drive circuit which characterized in that: the magnetic latching relay comprises a power supply switch control circuit and a magnetic latching relay circuit, wherein the power supply switch control circuit is connected with the magnetic latching relay circuit, and the magnetic latching relay circuit is connected with a terminal P1.
2. The magnetic latching relay tamper-proof driving circuit according to claim 1, wherein: the power supply switch control circuit comprises a triode Q2, the base of a triode Q2 is connected with one end of a resistor R4, the other end of the resistor R4 is connected with a control signal, the emitting electrode of a triode Q2 is connected with a grounding end, and the collecting electrode of a triode Q2 is connected with one end of a resistor R3.
3. The magnetic latching relay tamper-proof driving circuit according to claim 2, wherein: the power supply switch control circuit comprises a resistor R5, one end of a resistor R5 is connected with the base electrode of the triode Q2, and the other end of the resistor R5 is connected with the emitting electrode of the triode Q2.
4. The magnetic latching relay tamper-proof driving circuit according to claim 2, wherein: the power supply switch control circuit comprises a triode Q1, the base of a triode Q1 is connected with the other end of a resistor R3, the emitting electrode of a triode Q1 is connected with the positive electrode of a power supply, and the collecting electrode of a triode Q1 is connected with a magnetic latching relay circuit.
5. The magnetic latching relay tamper-proof driving circuit according to claim 4, wherein: the power supply switch control circuit comprises a diode D1 and a diode D2, wherein the cathode of the diode D1 is connected with the emitter of the transistor Q1, the anode of the diode D1 is connected with the collector of the transistor Q1, the anode of the diode D2 is connected with the base of the transistor Q1, and the cathode of the diode D2 is connected with the emitter of the transistor Q1.
6. The magnetic latching relay tamper-proof driving circuit according to claim 4, wherein: the power supply switch control circuit comprises a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected with the collector of the triode Q1, the other end of the resistor R1 is connected with the ground terminal, one end of the resistor R2 is connected with the positive electrode of a power supply, and the other end of the resistor R2 is connected with the collector of the triode Q2.
7. The magnetic latching relay tamper-proof driving circuit according to claim 2, wherein: the capacitor C1 is connected in parallel with two ends of the resistor R3.
8. The magnetic latching relay tamper-proof driving circuit according to claim 1, wherein: the magnetic latching relay circuit comprises a magnetic latching relay K1, wherein pins 1 and 2 of a magnetic latching relay K1 are respectively connected with logic control signals, pin 4 of a magnetic latching relay K1 is connected with pin 1 of a terminal P1, pin 3 of a magnetic latching relay K1 is connected with pin 2 of a terminal P1, and pin 5 of a magnetic latching relay K1 is connected with a collector of a triode Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021463132.5U CN212209348U (en) | 2020-07-22 | 2020-07-22 | Magnetic latching relay anti-interference drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021463132.5U CN212209348U (en) | 2020-07-22 | 2020-07-22 | Magnetic latching relay anti-interference drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212209348U true CN212209348U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021463132.5U Active CN212209348U (en) | 2020-07-22 | 2020-07-22 | Magnetic latching relay anti-interference drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212209348U (en) |
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2020
- 2020-07-22 CN CN202021463132.5U patent/CN212209348U/en active Active
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