[VoIP] Coin relay controller

[Mark Rudholm]

Donald Froula wrote:
> ...only if you cap filter it. Wouldn't unfiltered,
> bridge rectified have about the same RMS as sine AC?
> The frequency is doubled, of course.

I find line AC through a 2:1 transformer then full-
wave rectified and filtered with a 220µF cap yields
about 78VDC, which is just about perfect since it's
enough to power the higher voltage coin-relays but
not excessive for the lower voltage ones.

Oh, and thanks for the Bellcore, etc documentation.
Very helpful stuff.

So helpful, I'm toying with the idea of supporting
the Stuck Coin and Initial Rate tests...

-Mark