IGCSE circuit symbols

• Wires crossing with a connection
• Wires crossing with no connection
• Closed switch
• Lamp

• Wires crossing with no connection
• Wires crossing with a connection
• Series circuit
• Parallel circuit

• Open switch
• Closed switch
• Open door
• Thermistor

• Closed switch
• Push switch
• Trap door
• AC Power supply

• Open push switch
• Closed push switch
• Battery
• Cell

• Closed push switch
• Pressure pad
• Weighing scales
• Fuse

• Cell
• Battery
• Power supply
• Magnet

• Battery
• Cell
• Variable power supply
• Transformer

• AC power supply
• Wave machine
• Loudspeaker
• Light source

• Transformer
• Coil
• Spring
• Heater