Magnetos

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Magnetos

• Welding and Small Gas Engines

Original Power Point Created by Eric
Haselhurst Modified by Georgia Agricultural
Education Curriculum Office June 2002
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How do you get the spark?

• Large engines get electricity via a battery and
  alternator combination.
• Lawnmowers for example, get electricity from a
  magneto.
• You need electricity to create the spark for the
  combustion process.

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How do you get the spark?

• A magneto is an electrical generator that creates
  periodic high-voltage.

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How do you get the spark?
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How do you get the spark?
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How do you get the spark?

• A magneto consists of five parts
• an armature
• primary coil
• secondary coil
• electronic ignition
• permanent magnets attached to the flywheel

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How do you get the spark?

• When the magnets spin past the armature, they
  induce a magnetic field.
• High voltage is achieved between the second
  primary coils to reach the voltage for the engine
  to function properly.

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References
www.howstuffworks.com