Schematic Symbols

Resistor

Variable Resistor

Capacitor

Capacitor

Inductor or Coil

Circuit ground or Earth

Chassis Ground or Earth

AC Signal or Power Source

Battery

Fuse

Lamp

Transformer

Diode

NPN Transistor

PNP Transistor

Cell

Switch

Bulb

Buzzer

Ammeter

Voltmeter

Motor

Resistor

Variable Resistor

Normally Open Button

Normally Closed Button

Normally Open Pressure Switch

Normally Closed Pressure Switch

Coil

Proximity Switch

Pilot Light

Normally Open Contact

Normally Closed Contact

Solenoid

Thermal element

Common Ground

Thermocouple