In Reply to: Hot 6SN7 Preamp update posted by Cuernavaca on August 2, 2017 at 11:47:16:
First, it is drawn that the two 6.3 v secondaries are connected out of phase.
Then you have a bridge rectified 6.39 volt DC connected to a 28 volt reference on the positive end and ground on the other. This does not work and has to be drawn wrong.
You raise a DC supply by referencing the ground side to the elevated voltage.
If it was build like the drawing, you have some opportunities for improvement.
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Follow Ups
- The way the heater supply is drawn in the schematic looks very wrong - Chip647 05:13:23 08/03/17 (0)