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Argus25 · 21st Jun 2019, 9:09 am

If I was confronted with this, I would use the highly capable, economical and easy to get RCA 6N7. Strapping the two triodes together, then step up the 4V to 6.3 using a small autotransformer. Very easy to design & wind on a 1cm(squared) cross section laminated iron core.

21st Jun 2019, 9:09 am	#8
Argus25 No Longer a Member Join Date: Oct 2016 Location: Maroochydore, Queensland, Australia. Posts: 2,679	Re: Philips output triode HELP please If I was confronted with this, I would use the highly capable, economical and easy to get RCA 6N7. Strapping the two triodes together, then step up the 4V to 6.3 using a small autotransformer. Very easy to design & wind on a 1cm(squared) cross section laminated iron core.