CN213905246U - Single-coil magnetic latching relay drive circuit - Google Patents
Single-coil magnetic latching relay drive circuit Download PDFInfo
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- CN213905246U CN213905246U CN202022827830.5U CN202022827830U CN213905246U CN 213905246 U CN213905246 U CN 213905246U CN 202022827830 U CN202022827830 U CN 202022827830U CN 213905246 U CN213905246 U CN 213905246U
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- triode
- magnetic latching
- latching relay
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Abstract
The utility model discloses a single coil magnetic latching relay drive circuit, which relates to the technical field of relays and mainly solves the technical problems of complex structure and high cost of the drive circuit of the existing magnetic latching relay, wherein the drive circuit comprises a coil current reversing circuit and a current reversing control circuit; the coil current reversing circuit comprises a first triode, a first diode, a first capacitor and a first resistor, wherein a collector of the first triode is connected with one end of the first capacitor and one end of the first resistor in parallel to a positive electrode of a direct current power supply, the other end of the first capacitor is used for connecting one end of a magnetic latching relay coil, an emitter of the first triode is connected with a positive electrode of the first diode and is used for connecting the other end of the magnetic latching relay coil, and a base of the first triode is connected with the other end of the first resistor and a negative electrode of the first diode. The utility model discloses a control first electric capacity periodic charging and discharging and realize relay coil magnetic latching, circuit structure is simple, with low costs.
Description
Technical Field
The utility model relates to a relay technical field, more specifically say, it relates to a single coil magnetic latching relay drive circuit.
Background
The magnetic latching relay is different from a common relay in structure and on-off state, so that the magnetic latching relay is more and more widely applied to modern electric appliances, but a driving circuit of the magnetic latching relay needs to convert a positive power supply and a negative power supply and increases complexity for the driving circuit, and the driving circuit of the existing magnetic latching relay is complex in structure and high in cost.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, the utility model aims at providing a simple structure, with low costs single coil magnetic latching relay drive circuit.
The technical scheme of the utility model is that: a single-coil magnetic latching relay drive circuit comprises a coil current commutation circuit and a current commutation control circuit; the coil current reversing circuit comprises a first triode, a first diode, a first capacitor and a first resistor, wherein a collector of the first triode is connected with one end of the first capacitor and one end of the first resistor in parallel and connected with a direct current power supply anode, the other end of the first capacitor is used for being connected with one end of a magnetic latching relay coil, an emitter of the first triode is connected with an anode of the first diode and the other end of the magnetic latching relay coil, and a base of the first triode is connected with the other end of the first resistor and a cathode of the first diode; the current reversing control circuit comprises a second triode, a collector of the second triode is connected with a base of the first triode, an emitter of the second triode is connected with a direct current power supply negative electrode, and the base of the second triode is used for being connected with a control input end.
As a further improvement, the current commutation control circuit further comprises a second resistor, and a base of the second triode is connected to the control input terminal through the second resistor.
Advantageous effects
Compared with the prior art, the utility model, the advantage that has does:
the utility model discloses an input periodic control signal and give the second triode, the first triode periodic break-make of second triode control to the realization makes the magnetic latching relay coil produce the current of direction periodic variation to first electric capacity periodic charging and discharging, thereby realizes the magnetic latching relay coil and produces the magnetic field of direction periodic variation, realizes the magnetic latching effect, the utility model discloses a circuit structure is simple, with low costs, still has low-power consumption, little volume, commonality are strong and application scope is wide characteristics.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: q1-first triode, Q2-second triode, D1-first diode, C1-first capacitor, R1-first resistor and R2-first resistor.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1, a single-coil magnetic latching relay driving circuit includes a coil current commutation circuit, a current commutation control circuit; the coil current reversing circuit comprises a first triode Q1, a first diode D1, a first capacitor C1 and a first resistor R1, wherein a collector of the first triode Q1 is connected with one end of a first capacitor C1 and one end of a first resistor R1 and is connected with a positive electrode of a direct current power supply in parallel, the other end of the first capacitor C1 is used for being connected with one end of a magnetic latching relay coil L, an emitter of the first triode Q1 is connected with a positive electrode of a first diode D1 and is used for being connected with the other end of the magnetic latching relay coil L, and a base of the first triode Q1 is connected with the other end of the first resistor R1 and a negative electrode of the first diode D1; the current commutation control circuit comprises a second triode Q2, wherein the collector of the second triode Q2 is connected with the base of the first triode Q1, the emitter of the second triode Q2 is connected with the negative pole of the direct current supply, and the base of the second triode Q2 is used for being connected with the control input end IN.
The current commutation control circuit further comprises a second resistor R2, and the base of the second transistor Q2 is connected to the control input terminal IN through a second resistor R2.
The utility model discloses an input periodic control signal and give second triode Q2, the first triode Q1 periodic break-make of second triode Q2 control to the realization is to first electric capacity C1 periodic charging and discharging, makes magnetic latching relay coil L produce the current of direction periodic variation, thereby realizes magnetic latching relay coil production direction periodic variation's magnetic field, realizes the magnetic latching effect, the circuit structure of the utility model is simple, with low costs, still have low-power consumption, little volume, the commonality is strong and application scope is wide characteristics.
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (2)
1. A single-coil magnetic latching relay drive circuit is characterized by comprising a coil current reversing circuit and a current reversing control circuit; the coil current reversing circuit comprises a first triode (Q1), a first diode (D1), a first capacitor (C1) and a first resistor (R1), wherein a collector of the first triode (Q1) is connected with one end of the first capacitor (C1) and one end of a first resistor (R1) and is connected with a direct current power supply positive electrode, the other end of the first capacitor (C1) is used for being connected with one end of a magnetic latching relay coil (L), an emitter of the first triode (Q1) is connected with a positive electrode of the first diode (D1) and the other end of the magnetic latching relay coil (L), and a base of the first triode (Q1) is connected with the other end of the first resistor (R1) and a negative electrode of the first diode (D1); the current commutation control circuit comprises a second triode (Q2), wherein a collector electrode of the second triode (Q2) is connected with a base electrode of the first triode (Q1), an emitter electrode of the second triode (Q2) is connected with a direct current supply negative electrode, and a base electrode of the second triode (Q2) is used for being connected with a control input end (IN).
2. A single coil magnetic latching relay drive circuit according to claim 1, characterized IN that the current commutation control circuit further comprises a second resistor (R2), the base of the second transistor (Q2) being connected to the control Input (IN) via the second resistor (R2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022827830.5U CN213905246U (en) | 2020-11-30 | 2020-11-30 | Single-coil magnetic latching relay drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022827830.5U CN213905246U (en) | 2020-11-30 | 2020-11-30 | Single-coil magnetic latching relay drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213905246U true CN213905246U (en) | 2021-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022827830.5U Active CN213905246U (en) | 2020-11-30 | 2020-11-30 | Single-coil magnetic latching relay drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213905246U (en) |
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2020
- 2020-11-30 CN CN202022827830.5U patent/CN213905246U/en active Active
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