![]() ![]() These little guys will help reduce ripple in the power supply. The particular cloth tape that Gery at Transcendar uses runs $50+ a roll, which wouldn't really be worth the cost for a single application, so black engine enamel was settled on to darken the lams on the PA-774 for its high heat properties.īlack Engine Enamel used to darken transformer laminationsĪlso from Triode Electronics is a pair of reproduction C-354 chokes. ![]() The laminations of this transformer are a natural metal finish, and since the 312-OT outputs are wrapped with adhesive black cloth tape, I wanted the PA-774 to match a little better. The power transformer is the Triode Electronics PA-774, which is a well-made clone of the Dynaco ST-35 PA-774 transformer. Transcendar TT-312-OT 5K were settled on for the outputs for this build, they're a very highly recommended value and made in the U.S.Ī pair of Transcendar 312-OT output transformers James 6113HS outputs were the initial recommendation on the BoM (bill of materials), however it seems there are no local suppliers at them moment, and having them shipped overseas is an expensive proposition due to the weight. A variety of transformers can be used, including James, Triode Electronics, Edcor, etc.
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