The symbols or electronic circuits are actually represented by circuit diagrams. There are some standard symbols to represent components in circuits. In these files you will find some frequently used symbols for drawing circles. There are many electrical and electronic schematic symbols used to denote basic electronic or electrical devices. These are mostly used for drawing circuit diagrams.
On this page, you can get a free CAD library of electrical symbols in AutoCAD. Token legend includes: one-gang switch, double-gang switch, three-gang switch, two-way switch, two-way double-key, three-way two-way switch, cross switch, serial switch, single socket, lamp single socket, double socket, single socket ground, Lamp Single Ground Socket, Dual Ground Socket, Single Ground Socket, Telephone, Dual Ground Socket, Telephone, Telephone Jack, Internet Socket, TV Socket, Weatherproof Socket, Dect Base Station, Wall Mount, Picture Lamp.