i'm looking at using Edcor's XPWR144 power xfmr for a simple se. my concern is the 3.5A limit on the 6.3 winding, will this be ok or should i try something different? the reason i'm going for the 144 is the 380/320 CT winding will give me options to drop the B+ rail for other tubes.
I specify a 5 amp winding to cover all possibilities with some margin. A SSE with KT88's will draw exactly 3.5 amps if all of the tubes are exactly at spec. An EL34 version will draw 3.3 Amps. The filament current could easily be +/- 10% or so. This could put the current close to 4 amps. A 4 amp winding would work, but 3.5 is rather close. See what Edcor says.
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