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Enhanced Triode Mode?
Enhanced Triode Mode?
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Old 3rd October 2018, 12:44 PM   #1
deicide67 is offline deicide67  United States
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Join Date: Aug 2008
Default Enhanced Triode Mode?

In a single ended amplifier, is ETM (enhanced triode mode) essentially screen drive? Ive been doing some searching, but I can not locate much information on how to and the benefits. Anyone have a few schematics to share? I have a handful of 6DN6 and 25CD6GB Id like to try in something that allows me to push it a bit past the 1-3W in SE triode.

Thanks!
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Old 3rd October 2018, 01:20 PM   #2
rfbrw is offline rfbrw
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EAR-859
EAR-861

Last edited by rfbrw; 3rd October 2018 at 01:22 PM.
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Old 3rd October 2018, 02:24 PM   #3
Steve Morley is offline Steve Morley  Canada
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Location: Georgian Bay
Thanks rfrbw. I've been looking for that HFN&RR article for a while.

Deicide67, a screen drive amp requires more, well drive. At any rate here's another, see attachment. Bob Danielak doesn't seem to have an active site and it was meant for DIY so I'm including it if the moderator doesn't remove it.

Steve
Attached Files
File Type: pdf EL509 6BM8 Sweep tube Amp.pdf (171.6 KB, 75 views)
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Old 3rd October 2018, 08:56 PM   #4
deicide67 is offline deicide67  United States
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So, not to oversimplify things, but its typically a high gain or Pentode driver into a low impedance cathode follower driving g2 and g1 is tied to the cathode?

Would something like a 12AX7 into a 6CG7 cathode follower swing enough voltage, ordoes it need to be something like cascaded 12AT7?

Thanks!
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