SVT experts question

catalin gramada

Senior Member

Join Date: Mar 2008

Posts: 1713

Location: Romania
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#1

SVT experts question

01-11-2025, 06:10 PM

Hello. I just wonder if this svt really exist...they used an extra PT to increase the screens voltage due to 6146 to 6550 transition from 220V to 350V around ? Still I wonder why don't get any protection just in case of plate supply failed and the screens are still engaged ?

Last edited by catalin gramada; 01-11-2025, 08:50 PM.

"If it measures good and sounds bad, it is bad. If it measures bad and sounds good, you are measuring the wrong things."
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J M Fahey

Old Timer

Join Date: Oct 2007

Posts: 12992

Location: Buenos Aires, Argentina
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#2

Yesterday, 10:40 PM

Not surprised if they did.
If they switched but still had, say, 100-200 old style unsold heads , they would definitely not junk them if adding a small extra transformer could "save" them.

Fail safe circuits?

Not too common anywhere, except, maybe, in NASA or the Military or Medical fields

Juan Manuel Fahey
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