Metalwork - Electronics - Electronic Symbols

Electronic Circuits are the working drawings of the Electronics world. The symbols allow us to communicate our ideas without having to draw real life objects. Below are some of the common Electronic Circuit Symbols used today. The list is not complete as there are hundreds of symbols in total but this list gives you a good working knowledge.


Symbol




Meaning


Positive
Negative
Alternating Current (AC)
Direct Current (DC)
Crossing Conductors
Connected Conductors
Cell
Battery
Switch
Lamp / Bulb
Resistor
Potentiometer (Variable Resistor)
Variable Resistor
Thermistor
Light Dependent Resistor (LDR)
Ammeter
Voltmeter
Ohmeter
Motor
Generator
Bell
Buzzer
Loudspeaker
Diode
Light Emitting Diode (LED)
Light Sensitive Diode (Photodiode)
NPN Transistor
PNP Transistor
Capacitor
Polarised Capacitor
Variable Capacitor
Transformer
Fuse
Earth
Relay
Solenoid