Re: Twin coil idea
In a message dated 09/13/1999 5:24:26 AM Central Daylight Time,
This twin system might well use a 3/4 H.P. 3450 R.P.M. grinder motor
converted to sync. operation. This would save the expense of using two
separate rotary motors, since the motor has two shafts. One disc would be in
a fixed position, while the other disc could be indexed and adjustable in
phase relative to the other.
Note this would need to be a P.S.C induction type grinder motor to convert to
3600 R.P.M. sync. operation which most are.
<< In a typical twin TC, the sparks can become unbalanced at each
toroid, unless long spark take-off rods are installed on the toroids.
This is probably due to spark loading effects in each sec/pri.
It might be interesting to build a twin classic TC with separate power
supplies, tank circuits, and sync gaps. By carefully synching the
two rotaries, a condition would occur in which the sparks would attract
each other occasionally. They would attract only occasionally
because the RF from the two systems would drift into (or out of) phase
occasionally based on rotary jitter and tuning. >>