E280F Triode mode operating point - diyAudio
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Old 5th September 2005, 08:59 PM   #1
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Default E280F Triode mode operating point

Hi to all,

someone here who experimented with the 7722/E280F in Triode mode as a driver for the 300B?

I have a few tubes on hand and looking for operating suggestions.


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Old 20th July 2013, 07:02 PM   #2
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please , somebody that help us whith operating point to e280f !!!
pleaseeeeeeeeeee !!!
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Old 20th July 2013, 09:50 PM   #3
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Location: Ashland,Ky U.S
From what I see in datasheet http://www.mif.pg.gda.pl/homepages/f...09/e/E280F.pdf the recommended operating point looks pretty good. So you need B+=320V, plate load 6.5k, cathode resistor 75 ohms, which will give you the operating points 160v@24mA.
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