Magnetos

Welding and Small Gas Engines

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.

How do you get the spark?

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

How do you get the spark?

How do you get the spark?

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

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.

References