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