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Old 23rd May 2007, 08:14 PM   #1
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Default 7788 Triode Curves

Does anyone have a datasheet with 7788/E810F triode curves? The closest I have come up with is http://www.pmillett.com/pentodes.htm which is good, but I'd like the whole graph if possible.
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Old 23rd May 2007, 08:31 PM   #2
d2134 is offline d2134  Romania
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From PHILIPS:
http://www.mif.pg.gda.pl/homepages/f...09/e/E810F.pdf
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Old 25th May 2007, 06:06 AM   #3
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From the cat:

http://www.goodsoundclub.com/PDF/7788.pdf

Just realized data sheet does not have triode connection. Send me a tube and I'll trace it for you.

jh
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Old 27th May 2007, 08:01 PM   #4
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I don't think John Atwood would mind if I post his picture of a curve trace of triode-connected 7788.
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File Type: jpg 7788 triode curve traces.jpg (37.2 KB, 2093 views)
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Old 27th May 2007, 08:08 PM   #5
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And here are some data sheet characteristics for a triode-connected 7788.
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Old 27th May 2007, 08:23 PM   #6
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Quote:
Originally posted by Brian Beck
I don't think John Atwood would mind if I post his picture of a curve trace of triode-connected 7788.
Beautiful, thanks very much.

Quote:
Originally posted by hagtech
Send me a tube and I'll trace it for you.
Thanks for the offer Jim. If the attached curves don't end up being in concert with my tubes, I may take you up on it.
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Old 5th November 2007, 07:56 PM   #7
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This is of an Amperex "PQ".

Click the image to open in full size.

jh
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Old 6th November 2007, 12:29 AM   #8
PeteN is offline PeteN  United Kingdom
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How on earth do you make an oscilloscope do that?
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Old 6th November 2007, 01:29 AM   #9
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With a VacuTrace, of course.

jh
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Old 6th November 2007, 05:49 AM   #10
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Thanks Jim. For all the talk of these tubes being all over the place, and difficult to match, I've found them to be quite consistent across my samples.
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