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CN-224204982-U - Switch control circuit applied to alternating current output for preventing backflow

CN224204982UCN 224204982 UCN224204982 UCN 224204982UCN-224204982-U

Abstract

The utility model discloses a switch control circuit applied to alternating current output anti-reflux, which relates to the technical field of control circuits and comprises an input power supply module, a switch control module, an alternating current working module and an MCU control module, wherein the input power supply module is used for providing output power and energy required in the working process, one end of the input power supply module is connected with the switch control module, one end of the switch control module is connected with the alternating current working module, one end of the alternating current working module is connected with the MCU control module, and the other end of the MCU control module is connected with the input power supply module. The utility model uses the time-sharing work of the input power supply module and the alternating current working module, and the switch control module is used for switching on and off the two loops, so that the mutual influence of the working time of the input power supply module and the working time of the alternating current working module is avoided, the problem of impedance matching is solved, and the requirement of simple circuit structure is realized to a greater extent.

Inventors

  • QIN HONGSHUN
  • WANG CHUANXIANG

Assignees

  • 山东镭之源激光科技股份有限公司

Dates

Publication Date
20260505
Application Date
20250403

Claims (6)

  1. 1. A switch control circuit for ac output anti-reflux, comprising: The input power supply module is used for providing output power and energy required in the working process; the switch control module is used for switching on and switching off the connection between the input power supply module and the alternating current working module; The alternating current working module is used for receiving the signals of the MCU control module and outputting the signals; The MCU control module is used for being responsible for detection and control of the system; One end of the input power supply module is connected with the switch control module, one end of the switch control module is connected with the alternating current working module, one end of the alternating current working module is connected with the MCU control module, and the other end of the MCU control module is connected with the input power supply module.
  2. 2. The switch control circuit according to claim 1, wherein the switch control module comprises a resistor R1, a capacitor C1 and a switching device N1, a first end of the switching device N1 is connected to the second output end of the input power module, a second end of the switching device N1 is connected to the ac operation module, and a third end of the switching device N1 is connected to one end of the resistor R1.
  3. 3. The switch control circuit for ac output anti-reverse current according to claim 2, wherein the resistor R1 and the capacitor C1 form a parallel circuit, one end of the parallel circuit is connected to the third end of the switching device N1 and the MCU control module, and the other end of the parallel circuit is connected to the second output end of the input power module, the first end of the switching device N1 and the MCU control module.
  4. 4. The switch control circuit for ac output anti-reverse current according to claim 1, wherein the ac operation module is directly connected to the input power module, and the ac operation module comprises a capacitor C2, a diode D2, a switching device N2, and an inductor L1.
  5. 5. The switch control circuit according to claim 4, wherein one end of the capacitor C2 is connected to the first output end of the input power module and the inductor L1, the other end of the capacitor C2 is connected to the positive electrode of the diode D2, the first end of the switching device N2 and the switch control module, the second end of the switching device N2 is connected to the negative electrode of the diode D2 and the other end of the inductor L1, and the third end of the switching device N2 is connected to the MCU control module.
  6. 6. The switch control circuit for preventing reverse current of an ac power supply according to claim 4, wherein a diode D1 is disposed between the ac power supply module and the ac working module, a cathode of the diode D1 is connected to the ac power supply module and the MCU control module, and an anode of the diode D1 is connected to the first output terminal of the input power supply module.

Description

Switch control circuit applied to alternating current output for preventing backflow Technical Field The utility model relates to the technical field of control circuits, in particular to a switch control circuit applied to alternating current output anti-reflux. Background With the rapid development of electronic technology, the integration and modularization degree of a control circuit system are continuously improved, and interconnection and interworking among different functional modules become an important link in the design of the control circuit. In practical application, various factors including signal integrity, power transmission efficiency, system stability and the like are required to be considered in connection between circuit modules, and particularly in a control circuit system related to alternating current output, the connection mode between the modules directly influences the performance of the whole system due to the difference of circuit characteristics, and reasonable control circuit connection design has important significance in ensuring the reliable operation of the system. At present, when two or more operation characteristic control circuits are connected, characteristic impedance is matched, if the two circuits are not well matched, an output circuit of the circuit can seriously affect an input circuit, even damage components in the circuit, so that the circuit cannot work normally, and in order to realize the application of the circuit, the output alternating current impedance of a front-stage circuit (such as a direct/alternating current power supply module) needs to be increased. In order to realize impedance matching, matching elements such as series equivalent inductance and the like are generally added in a front-stage circuit, and impedance matching requirements among different modules are met by adjusting circuit parameters, so that stable operation and signal transmission quality of a control circuit system are ensured. The patent document with the application number 202320965368.6 discloses a radio frequency front end impedance control circuit which comprises a radio frequency front end circuit, an antenna, a directional coupler, a low noise amplifier circuit, a second switch and a second resistor, wherein the directional coupler is arranged between the radio frequency front end circuit and the antenna, the low noise amplifier circuit is grounded through the second switch and the second resistor which are sequentially connected in series, and the second resistor is subjected to impedance conversion through a first inductor, so that the power amplifier can work normally. However, in the specific application process of the control circuit, the existing impedance matching method still needs to use a large series equivalent inductor to achieve a good impedance matching effect, the whole volume of the control circuit system is increased, higher power loss is caused, the use of the matching element obviously increases the manufacturing cost of the control circuit system, and in addition, the structural characteristics of each module need to be fully considered when the control circuit is designed, so that the design and application of the circuit become complex, and the problems seriously restrict the miniaturization development and practical application popularization of the control circuit system. For the problems in the related art, no effective solution has been proposed at present. Disclosure of utility model Aiming at the problems in the related art, the utility model provides a switch control circuit applied to alternating current output anti-reflux so as to overcome the technical problems in the prior art. For this purpose, the utility model adopts the following specific technical scheme: The switch control circuit applied to alternating current output anti-reflux comprises an input power supply module, a switch control module, an alternating current working module and an MCU control module, wherein the input power supply module is used for providing output power and energy required in the working process, one end of the input power supply module is connected with the switch control module, one end of the switch control module is connected with the alternating current working module, one end of the alternating current working module is connected with the MCU control module, the MCU control module is used for being responsible for detection and control of a system, and the other end of the MCU control module is connected with the input power supply module. Optionally, the switch control module is used for switching on and off the connection of input power module and alternating current operation module, and the switch control module includes resistance R1, electric capacity C1 and switching device N1, and switching device N1's first end is connected with input power module's second output, and switching device N1's second end is connected with alternating current opera