Adjustable voltage power socket

The existing AC 220V power socket, if the voltage at both ends of a socket needs to be adjusted during use to meet the requirements of certain electrical appliances, then the cover of the socket box can be removed and two components can be connected to the inside of the socket box, as shown in the accompanying drawings, so that the original socket becomes an adjustable voltage socket.

VS uses BTA plastic-encapsulated bidirectional thyristor (8A/400V), and RP uses WTX-K potentiometer (470kΩ). A small hole can be opened at an appropriate position on the socket box cover to fix the RP, and a knob can be put on the shaft of the RP to adjust the voltage.