Power transformer for 6883B tube uses?

diamondsouled · 14th May 2008, 05:13 PM

I just inherited a truck load of old 60's Marconi Ch 25 base radios, 6 of em! They have a huge power transformer that powers a pair of 6883B beam power tubes:

http://www.mif.pg.gda.pl/homepages/f...49/6/6883B.pdf

Would these trannies power 6L6s, EL34s, 6550s, as well?

Cheers

Lar

Tom Bavis · 14th May 2008, 08:52 PM

Assuming that these were about 125-150W output, the supply might be about 600V @ 400 mA intermittent duty. The same transformer might give 450V at 400 mA continuous with a choke input supply - plenty for a push-pull 6L6 or EL34 amp. If it's a voltage doubler supply, it won't be as useful, maybe too low with a bridge, too high with the doubler...

14th May 2008, 05:13 PM	#1
diamondsouled diyAudio Member Join Date: Oct 2007	Power transformer for 6883B tube uses? I just inherited a truck load of old 60's Marconi Ch 25 base radios, 6 of em! They have a huge power transformer that powers a pair of 6883B beam power tubes: http://www.mif.pg.gda.pl/homepages/f...49/6/6883B.pdf Would these trannies power 6L6s, EL34s, 6550s, as well? Cheers Lar

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14th May 2008, 08:52 PM	#2
Tom Bavis diyAudio Member Join Date: Jun 2002 Location: Macedon NY	Assuming that these were about 125-150W output, the supply might be about 600V @ 400 mA intermittent duty. The same transformer might give 450V at 400 mA continuous with a choke input supply - plenty for a push-pull 6L6 or EL34 amp. If it's a voltage doubler supply, it won't be as useful, maybe too low with a bridge, too high with the doubler...

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