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Dun Mei...

Posted by mmcc73 (A) on September 15, 2020 at 12:03:52

In Reply to: bad transformer posted by Ralph on September 15, 2020 at 08:17:32:

Thanks Ralph.

The current transformer has the following secondaries. Are you able to determine what voltages are used for what purpose?

V1 - 6.3V - filament
V2 - 25V - Bias?
V3 - 60V ?
V4 - -120-0-120V ?
V5 - -260-0-260V ?

Clark

I had posted this before and deleted it because the subject line was messed up. Unfortunately, right when I did that, Ralph had replied and that got deleted as well. Fortunately, I got his message in email:

V1 - 6.3V - filament high current, about 25 amps to support all the tubes
V2 - 25V - Bias?
V3 - 60V ?
These two are probably bias supplies, one for the top tubes and one for the
bottom?

V4 - -120-0-120V ? Definitely output section, you'll need about 2 amps
V5 - -260-0-260V ? Driver section, probably 50mA will do the job.

Edits: 09/15/20

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