Re: Equidrive P.S.

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

Original poster: "J. B. Weazle McCreath by way of Terry Fritz <twftesla-at-qwest-dot-net>" <weazle-at-hurontel.on.ca>


Hello Greg, Coilers,

You're right, the diagram does have a nice "balanced" look to it.
A question for you...have you found from experience that twelve
of the 1N4007 diodes are sufficient?  I've got a 6 KV, 250 mA.
power transformer that I was thinking of using for an experiment
with the D.C. resonant charging.  I plan on using a full wave 
bridge with one of my 9 uF. -at- 60 KV capacitors for the supply,
and wondered about the P.R.V. of a string of 12 being enough.

The "de-Qing" or blocking diode would have to hold off the rather
high reverse voltage spike from the charging choke.  As well, it
would have to stand up to whatever RF managed to sneak through the
choke, although it won't be much with the inductance being high!
Maybe a string of 4 or 5 M.O. diodes would work nicely for that.

As to the charging choke itself, since one end of the secondary is
already connected to the MOT core, I'm going to leave it that way
and connect the core end of the winding to the blocking diode of
the power supply and the other end to the tank circuit of my coil.
Anyone see a problem with that?  I think I'll put the entire choke
in a PVC junction box, immersed in oil, and bring the two leads
out through porcelain feedthrough bushings.

73, Weazle, VE3EAR/VE3WZL

Listening: 147.030+ and 442.075+
E-mail:    weazle-at-hurontel.on.ca
           or ve3ear-at-rac.ca
Web site:  http://www.hurontel.on.ca/~weazle