Parallel Path Magnetic
Technology
The Basics:
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If a permanent magnet were placed in a magnetic circuit as
shown all of the flux from the permanent magnet would flow
through the upper flux path to the armature and from the
armature to the lower flux path and then return to the permanent
magnet.
A magnetic force of attraction exists between the upper &
lower flux paths and the armature. For this discussion we assign
the amount of this force as 1 unit.
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![](1mag.gif)
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If another magnet with equal properties is added in parallel
to the circuit as shown below the flux through the armature
doubles.
By doubling the flux in the magnetic circuit the force of
attraction on the armature is now 4 units.
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![](2mag.gif)
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This is defined by the formula for the magnetic force of
attraction. The formula is:
Where F is the force and B is the flux in the air gap and A
is the area of a pole face in the air gap and 2Uo is the
magnetic constant. Since the only difference between the first
and second magnetic circuits is the addition of a second magnet
then we can see that the force of attraction can be defined as a
function of B squared. For those knowledgeable about
magnet circuits, this is elementary, but is fundamental to
understanding Parallel Path Magnetic Technology.
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![](b2form.gif)
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If the magnetic circuit is again modified by the addition of a
second armature as shown below, each of the permanent magnets
now have separate flux paths through their respective armatures. |
![](2mag2arm.gif)
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It should now be obvious from the above discussion
that the resulting force would be 1 unit acting on each
armature. Now armed with this basic magnetic theory we are ready
to discover what Parallel Path Magnetic Technology is and how it
works. |