Q: Is the AC circuit of the AC switch AC circuit and rectifier the most susceptible to electromagnetic interference?
Answer: The most serious place for the electromagnetic interference generated by the switching power supply is the circuit composed of the primary and secondary coils of the switching transformer, but its interference will cause radiation and conduction interference to other circuits through induction. The most serious problem of conducted interference and radiation interference is The power cord, because the power cord can easily become a half-wave vibrator antenna of the radiation source, and it is connected to the external line, it is easy to transmit the interference signal to other devices. Therefore, the power supply line must be effectively isolated at the input end of the switching power supply. 
Manual Hydraulic Valve Remote Control Device
The manual valve remote control device consists of a fixed manual hydraulic pump, a hydraulic driver and a butterfly valve. The device takes a single valve as the remote control operation object, and has the characteristics of compact structure, simple operation, convenient operation and maintenance, etc. It is suitable for remote opening and closing control of special position valves in oil tankers, chemical tankers, oil platforms and other ships.
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