Electrical and Electronic Schematic Symbols

  SYMBOL COMPONENT MEANING  

WIRES

Wires Represents a conductor that conducts electrical current. Also called a power line or

electric line or wire.

Connected Wires Represents the connection of two conductors. Dot shows the junction point.

Unconnected Wires Represents two unconnected wires/conductors. Any of the two methods can be

followed. Drawing two lines perpendicularly is an older method of representing

unconnected wires.

Input Bus Line Represents a bus for input or incoming data.

Output Bus Line Represents a bus for output or outgoing data.

Terminal Represents start or end point.

Bus Line Represents a number of conductors joined together to form a bus wire.

SWITCHES

Push Button

(Normally Open)

This switch is in ON state when the button is pressed otherwise it is in OFF state.

Electrical and Electronic Schematic Symbols

Electrical Symbols & Electronic Symbols