vac tubes / was Re: Schematics of Atanasoff-Berry
cclist at sydex.com
Wed Sep 3 11:18:24 CDT 2008
On 2 Sep 2008 at 23:55, Brent Hilpert wrote:
> 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.
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