Re: [CAD_CAM_EDM_DRO] bipolar or unipolar

In a message dated 4/3/2003 10:17:48 AM Central Standard Time,
timg@... writes:

> A unipolar always flows current the same direction in a coil.

Tim: This is NOT exactly correct! The current in HALF a coil always flows
in the same direction, but it (always!) flows the OPPOSITE direction in the
OTHER half of that same coil! This is the POINT of the center-tapped
"unipolar"! Gets you "bipolar results" with only one actual polarity, simply
by "swapping ends"!

Jan Rowland



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