1
2
3
4
5
100


Battery

100


Resistor

100


Capacitors

100


Diode

100


L.E.D. (Light emitting diode)

200


Zener Diode

200

Transistors

200

Ground symbol

200


Potentiometer

200


Light bulbs

300


Photo resistor (Light dependent resistor)

300


Transformer

300


Various symbols for relays

300


Switches

300

Electric motor

400


Fuses

400


Circuit breaker

400


Overloads 

400


Thermistor

400


Variable resistor

500


A/C sine wave

500


D.C. (Direct Current)

500


Rectifier bridge

500


Alternator 

500


Left = Wire connection point

Right = wire going over another wire. No connection.