3 Sep
2008
3 Sep
'08
9:30 a.m.
Chuck Guzis wrote:
On 2 Sep 2008 at 23:55, Brent Hilpert wrote:
Quit trying to sneek in NE-2 logic on the filaments.. if broken then
light bulb!
Make something using enough tubes and one can
wire up the filaments in
series as they were intended for..
If you run from line voltage, be sure to hang an NE-2 (with built-in
series resistor) in parallel with each heater so that you can easily
see when one opens up. That used to be one of the time-eaters when
servicing the old series-heater TV sets.
Cheers,
Chuck