Transformer with lower secondary voltage and two heater windings

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zachengland

Member
Joined 2020
#1
I am looking for a transformer for my preamp project with a roughly 380 vct secondary but with both a 5 and 6.3 windings for heaters. Right now I have a Hammond 269ex which seems to be giving me the high output I need but only has one winding for heaters. I have been unable to find any transformer with both the 5 and 6.3 that has a vct under 400v. Does this exist?

Thanks.
 
#3
zachengland said:
I am looking for a transformer for my preamp project with a roughly 380 vct secondary but with both a 5 and 6.3 windings for heaters. Right now I have a Hammond 269ex which seems to be giving me the high output I need but only has one winding for heaters. I have been unable to find any transformer with both the 5 and 6.3 that has a vct under 400v. Does this exist?

Thanks.
Click to expand...
IF you insist on tube rectification, go for a 6.3VAC rectifier, which having an isolated cathode can share same filament winding as all other tubes.

No need at all for a 5V direct heated rectifier.
 
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