However if current flows in the coils to produce a magnetic
polarity as shown at the right the resulting events occur. The
magnetic flux produced by the coils couple with the permanent
magnet flux and the result is as shown. The magnet on the right
and the coils are magnetically in series. Since they are in
series there is no gain in flux density.
The magnet on the right and the coil's flux are now placed in
parallel with the flux of the magnet on the left, with a
resulting equivalent of the flux of both magnets passing through
the armature on the left. The result is no force acting on the
armature on the right and 4 units of force acting on the
armature on the left. The coil only
contributes 1/2 of the magnetic field that is producing
the force on the left armature. At this
point the advantage of Parallel Path Magnetic Technology should
be obvious.
The reason the flux cannot pass through the armature on the
right is partly due to the axiom that a magnetic source's poles
will couple with the nearest opposite pole. However at the same
time it is impossible for both the coil's flux and the magnet's
flux to both pass through the armature on the right. Their
fluxes would be traversing the armature in opposite directions.
Flux can pass through the armature on the right, however, if an
excess of flux is produced by the coil. Excess flux is covered
on page 4.
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