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Old 19th Jan 2020, 9:20 am   #23
Diabolical Artificer
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Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,636
Default Re: HP 1725 Oscilloscope HT issue

"If I understand correctly, the grid needs to be more negative than the cathode" Yep, just like a normal triode. "Starting to make sence now " These scope power supply's can take some figuring out, glad to see your making progress.

Andy.
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