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Old 27th Oct 2020, 11:21 pm   #40
Richardgr
Heptode
 
Join Date: Oct 2019
Location: Täby, Sweden
Posts: 708
Default Re: Adding a selectable line input to valve radiogram

Quote:
Originally Posted by crackle View Post
The secondary mains transformer T3 is only supplying heater current. The HT is derived from the mains side of the transformer.
So I don't think that suggestion is going to work.
Mike
Yes, you are correct. Sorry for going off in the wrong direction. That is a tricky one to solve, if you were to try and earth the chassis! I think I’d be on the lookout for an old transformer with the extra winding.
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