General Symbols
| Joined Conductors | Crossing Conductors (not connected) | Resistor |
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| Potentiometer | Preset Potentiometer | Thermistor |
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| Light Dependent Resistor (LDR) | Polarised Capacitor | Non Polarised Capactior |
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| Diode | Light Emitting Diode (LED) | NPN Transistor |
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| Amplifier | Fuse | Resonator (2 pin) |
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| Resonator (3 pin) | Lamp | Motor |
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| Loud Speaker | Buzzer | Microphone |
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| Solenoid | Integrated Circuit | |
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Switches
| Push to make switch | Push to break switch | Single pole single throw switch (SPST) |
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| Single pole single throw switch (normally closed | Single pole double throw switch (SPDT) | Double pole double throw switch (DPDT) |
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| Dry Reed Switch | Opto-switch | Relay (shown with double throw contacts) |
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Logic Gate
| AND gate | OR gate | NOT gate (invertor) |
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| NAND gate | NOR gate | |
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Power Sources
| Battery (Primary cell) | Batteries | Power supply |
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