Re: Basic Stamp Controlled Spark Gap

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

Original poster: "Crow Leader by way of Terry Fritz <teslalist-at-qwest-dot-net>" <tesla-at-lists.symmetric-dot-net>

Sent: Monday, May 12, 2003 7:21 PM
Subject: Re: Basic Stamp Controlled Spark Gap


 > Original poster: "Jim Lux by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<jimlux-at-earthlink-dot-net>

[cut]

 > >Speed control -  H-Bridge push/pull type circuit
 > >using power MOSFETS and an output from the stamp.
 > >This and the tachometer feedback will keep the
 > >motor running at a consistent speed by varying
 > >the frequency of AC. This should compensate for
 > >any desyncronizing drag of the disc. How fast
 > >it rotates is yet to be determined. Initially
 > >planning on 1800RPM with eight electrodes for
 > >up to 240BPS.
 >
 > Since the motor is unidirectional, all you need is one switching device..
 > you don't need 4 quadrant operation (i.e. reverse or braking)...

Good point, a full H bridge is overkill for this project, unless you want
some wonderful univeral benchtop one for all other projects as well.

KEN