Periodic Volume Drop-and-Pop

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Guest
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12-16-2007, 12:53 AM

I have been digging a bit further. All of the spec sheets I have found on the Type 36 tetrode show a maximum screen bias of 90V. However, the change of the 9kOhm resistor to a 13kOhm results in a screen voltage of about 120V. Even subtracting a 10V cathode voltage this is well above the 90V cathode-to-screen-grid values in the spec. I noticed that the Type 77 allows for a higher screen bias.

I haven't tried a 9kOhm resistor yet. I am curious to see how that might affect things.

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Periodic Volume Drop-and-Pop - by Guest - 12-02-2007, 12:43 PM

[No subject] - by Guest - 12-03-2007, 11:01 AM

Drop off and ..... - by AI2V - 12-03-2007, 03:13 PM

[No subject] - by Guest - 12-03-2007, 03:24 PM

[No subject] - by Chuck Schwark - 12-03-2007, 04:34 PM

[No subject] - by Guest - 12-04-2007, 05:31 PM

[No subject] - by Chuck Schwark - 12-04-2007, 09:23 PM

[No subject] - by Guest - 12-10-2007, 05:21 PM

[No subject] - by Guest - 12-16-2007, 12:53 AM

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