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Alistair D · 16th Sep 2019, 1:59 pm

A couple of thoughts. Could the heater isolation transformer be causing a stray field?

Add a rectifier and smoother to the heater chain to run it from smooth DC. You would have to add extra resistance to the heater chain to allow for the cap charging up to peak voltage.

Al

16th Sep 2019, 1:59 pm	#52
Alistair D Nonode Join Date: Jan 2010 Location: Edinburgh, UK. Posts: 2,008	Re: Yet Another Bush TV22 A couple of thoughts. Could the heater isolation transformer be causing a stray field? Add a rectifier and smoother to the heater chain to run it from smooth DC. You would have to add extra resistance to the heater chain to allow for the cap charging up to peak voltage. Al __________________ I won't tell you how I discovered that.