magnet

Found 4 Results for magnet.

Showing 1 to 4.

1. Meter Minding
With older electricity meters (15 years or more), incorrect readings are sometimes caused by a weakening of the permanent magnet.
http://www.fun-home-projects.com/home_ownership/​accessories_and_maintenance/​meter_minding.html

2. Motors
The north pole of a magnet is attracted to the south pole of another magnet, but repelled by the north pole.
http://www.fun-home-projects.com/electrical_projects/​tools/​motors.html

3. DC Motors
The magnetic field for a motor may be provided by a permanent magnet. When a dc level is "wiped" onto the commutator (the separated contacts connected to the coils of wire) by a set of brushes (not shown), the current flowing through the coils of wire creates magnetic fields around the coils that are either opposed or attracted by the poles of the permanent magnet.
http://www.fun-home-projects.com/electrical_projects/​tools/​dc_motors.html

4. Ignition Systems
" Upon the engine being turned over the armature rotates, and as the primary winding cuts the magnetic lines of force flowing from north to south poles of the permanent magnet a current of low voltage is induced in the primary winding.
http://www.fun-home-projects.com/household_repairs/​e/​engine_gasoline/​ignition_systems.html

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