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Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

ECL82 Massive humming
ECL82 Massive humming
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Old 15th March 2018, 06:57 PM   #21
Valmond is offline Valmond  France
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@nigelwright7557

Wow, actually your first comment was exactly what was happening, I just hadn't found it / understood it yet
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Old 16th March 2018, 08:03 PM   #22
ChrisABC is offline ChrisABC  Canada
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Location: Alberta
here's another:

http://www.americanradiohistory.com/...cs-1953-05.pdf

page 65
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Old 20th March 2018, 09:31 AM   #23
Valmond is offline Valmond  France
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That's a really throughout listing, even a 'last ditch measures' with things that seemingly havent changed in a half century!

This should IMO be in a sticky post.
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Old 5th April 2018, 02:26 AM   #24
Diego Zordan is offline Diego Zordan  Argentina
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Join Date: May 2017
Hi Valmond, I was dealing with a problem of hum with an ecl82 too, I found the solution by separating the HT of the pentode anode from the triode anode and modifying the power supply, I give you the schematics here
Attached Images
File Type: png 6T9-Valve-Power-Supply-Schematic2.png (21.2 KB, 35 views)
File Type: gif SE-EL84-AU72.gif (7.8 KB, 35 views)
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Old 5th April 2018, 02:29 AM   #25
Diego Zordan is offline Diego Zordan  Argentina
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Join Date: May 2017
6T9-Valve-Power-Supply-Schematic2.png
SE-EL84-AU72.gif

I think I had an error uploading the images, here they
just in case
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