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In Reply to: RE: Sylvania/Philips 5AR4 posted by 1973shovel on August 26, 2021 at 12:14:45
On the VTA amp pages, you might find the link to the 'diode fix' for thiese.
A 1N4007 on each leg works. Problem might be that when these were supposedly built? House current was closer to 110 than todays near-120. That puts higher than expected voltage TO the tube which may be the source of hte arcing?
Check out hte diode fix.
Too much is never enough
Follow Ups:
Although for OCD types such as myself, Eli Duttman recommends the UF4007.Edited to correct typo.
Edits: 08/27/21
I won't go there....but I see that number as a VISHAY product, who I tend to trust.
My company sold them an entier line of what was then verging on an obsolete product. ALL of it and we did a build-out over a period of about a year so they'd have time to get THEIR line going without product shipments suffering.
Let the Lawsuits begin.
IR (now somebody else) makes FREDS, but I don't know if htat is suitable. And since there is plenty of intervening circuitry? I'll start with the commodity part from a normal builder.....IR or V?ISHAY would be fine, IMO.
Too much is never enough
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