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Circuit Diagrams

Circuits are drawn using symbols instead of drawing of the real equipment. This is to make the drawings easier.

There are special symbols for everything that may be required in a circuit. See the picture on the left for these.

These are combined together to make circuit diagrams.

Look at the image below. On the left is a drawing and on the right is the circuit diagram using the proper symbols.circuit_diagram

One of the most important parts of a circuit is the switch.

Watch the video below and see how to make a circuit with a switch for use in an alarm.

Follow these hyperlinks to learn more:-

  1. BBC Bitesize Circuits
  2. BBC Videos on Circuits
  3. Learning Circuits Activity

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