Electronic Component Description

Page 1

All electronic circuits require a power supply in order to

make them work. Batteries

are often the safest and most convenient way to power small, portable or mobile

projects. The chemicals inside a battery react and when connected to a circuit

force the electrons to move in a definite direction through the wires and

components that make up the circuit. The battery therefore can be viewed as an

electron pump because it forces the electrons to move. This movement of the

electrons is what is meant by an electric current. The size of the electric

current is measured in amperes or amps. If a larger current is needed then a

larger battery (electron pump) is required. The strength of a battery is

measured in volts.

The electronic symbol for a battery is as shown.

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