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Where did you get this circuit?

I see many problems and it's not going to work at all.

For starters:

What is the purpose of the 6EM7 circuit? It does nothing useful I can see. Some attempt at shunt pre-regulation?

The OD3's have no source voltage to clamp from.

You don't start out with 1000vct to end up with 300v as your primary B+.

Edits: 04/01/17 04/01/17 04/01/17 04/01/17

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