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Metal-Oxide-Semiconductor Field-Effect Transistor, a type of field-effect transistor (FET). MOSFETs have an insulated gate, the voltage of which determines the conductivity of the device. This can be used for amplifying or switching electronic signals. (From: Wikipedia)
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Unable to switch 5 V relay with 3.3 V input and BS170
I'm using an ESP-32 to switch an AC load.
My PCB has onboard
12 V 3 A - From wall mount adapter
5 V 800 mA - From the step-down regulator
3.3 V - from ESP not being used anywhere.
I'm getting 5V at …