"Electric Symbols"

Batteries, single cell, multi-cell

Capacitor

Capacitor, polarized

Capacitor, variable

Diode

Zener diode

Tunnel diode

LED

Photodiode

Silicon-controlled rectifier

Varicap

Schottky diode

Fuse, IEC (upper) and American (lower two)]]

Inductor

Operational amplifier

Phone jacks

Potentiometer

Resistor IEC and American versions

Switch, SPDT

Switch, DPDT

Transformer, with center tap

NPN transistor

Field-effect transistor

Vacuum tube diode