Magneto ignition system
An ignition magneto is a magneto that provides current for
the ignition system of a spark-ignition engine, such as a
petrol engine. It produces pulses of high voltage for the spark
plugs.The use of ignition magnetos is now confined mainly
to engines where there is no other available electrical supply,
for example in lawnmowers and chainsaws. It is also widely
used in aviation piston engines even though an electrical
supply is usually available. This is because a magneto
ignition system is more reliable than a battery-coil system.
People discussing magnetos and coils used in early internal-
combustion engines generally used the term "tension"
instead of the more modern term "voltage."
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