Re: First VTTC light, and a few questions

[Parpp807-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

In a message dated 7/19/00 9:17:28 AM Central Daylight Time, tesla-at-pupman-dot-com 
writes:

<<  Filament Voltage: 6.6VAC (the meter reads a rising voltage as i increase
 > the variac controlling plate voltage...  ...when the coil was ill-behaved
 > it would increase to as much as 10V, now it only reaches 7V...what is
 > happening?) >>

Grayson,

I solved that problem by bypassing to ground each leg of the filament leads 
with 0.02 - 0.05 uF capacitors. Place the caps right at the tube socket(s). 
You're getting RF into
the filament wiring.

Cheers,
Ralph Zekelman