RE: Variable Speed SRSG - OPTICAL ENCODERS

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Mccauley, Daniel H by way of Terry Fritz <teslalist-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>

A variable speed SRSG isn't a synchronous spark gap anymore. Its an
asynchronous rotary spark gap ARSG.

Also, an optical encoder would probably work best for your application
especially if its a feedback system.
You can get optical encoders with up to 1000 lines of resolution per
revolution.  This 1000 lines can be extended to quadrature operation to get
a maximum of 4000 lines of revolution.  Most likely overkill, but a 100 or
250 line encoder
would work great for a feedback controlled system.  And they aren't that
expensive either.  A fully assembly which can
couple to the shaft is probably about $30.00 for the whole thing.
USDigital-dot-com as them.

The Captain