Re: rotary spark gap
In a message dated 99-12-28 21:47:44 EST, you write:
<< Original Poster: Thomas Gstrein <thomas.gstrein-at-stwimst.at>
> Hello. Can I use a rotary spark gap with a NST?
The basic rule is: Only a synchonous rotary can be used. Non-
sync rotaries tend to destroy the NST's. You can modify an induction
motor to make it synchonous, by grinding flats on the armature. BUT
if you do use a sync rotary, the capacitor must be the *correct* size
for the system. If you take a coil that is optimized for a static gap
and simply install the sync rotary, it *may* give shorter sparks.
Generally 120 bps is used, but 240 bps can be used, if you have
enough NST power, and if the cap is the correct size, etc.