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Old 01-23-2016, 07:33 PM
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jr_tech jr_tech is offline
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Quote:
Originally Posted by old_coot88 View Post
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.
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

Last edited by jr_tech; 01-23-2016 at 07:37 PM. Reason: add info
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