Quote:
Originally Posted by old_coot88
Wasn't there some application in which 6AL5 was run at reduced heater voltage? I can't remember if it was as a detector or a relay driver for B+ delay.
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Same set, right next to the 5U4, heater is operated through about a 5 ohm resistor (for time delay) to trigger a b+ relay.
jr
v-25 here:
http://www.earlytelevision.org/pdf/d...03d-sams93.pdf