On Fri, 30 Aug 2002, Dave Dilatush wrote:

>In the case of the propeller clock, I was wondering: why
>complicate things by running AC through the slip rings?  Why not
>rectify and filter the transformer first, then run the filtered
>DC through the rings.  Easier to modulate than this
>now-you-see-it-now-you-don't trick with the diode.

He is using the ac as timebase.

Peter

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