In order to solve the MOS photoelectric coupling circuit of mini solid state relay with switch triggered by mistake when the upper loop no action, the principle of mini solid state relay is analyzed and researched. Meanwhile, itsummarizes the working principle and static features of MOSFET field-effect tube. Based on the characteristics of the circuit, the loop capacitor charge and discharge dynamic process is deduced when switch opening and closing. The reasons for false triggering are identified, and then...
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