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Were There Different Runs Of The 40-190?
#5

Thanks Arran! The puddle of wax on the cabinet I believe is from the original power transformer. There's no evidence of wax coming out of the transformer that's on it now. There's still a label on this transformer. It's a Stancor PM8403. 250-0-250 @ 70mA, 5.0 volts @ 2 amps for the 5Y3 filament and 6.3 volts @ 2.5 amps for the rest of the tube filaments.

I add up all the filament currents for each tube including the 41's but not the rectifier, and it's 2 amps. According to the above data and what you're saying this transformer that's in here should work fine with the 5Y3 that someone has installed in place of the 84.

Is this a correct assumtion on my part? Do the 41's in push-pull configuration increase the filament current for those two tubes?

Pepper

"It's Nice To Be Nice To The Nice"
Major Frank Burns Mash 4077th


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Re: Were There Different Runs Of The 40-190? - by Pepperoni - 09-24-2011, 02:10 PM



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