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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: Driving 6Y6GTs with El Cheapo 12AT7 front end? posted by Eli Duttman on April 25, 2013 at 17:20:21:
Eli,
Okay, more complex than I expected. I could just drop a BUNCH of voltage to the finals and use the 12AT7s, but somehow I don't think you would agree that such a notion makes sense. And now I get to learn some new stuff. Thanks, I think? :-)
May I get some clarification just to be sure I'm following you? Are you describing each section of a 6922 (one section per channel) to be ANODE-loaded with a CCS and LED biased? Then the anode at the tube goes straight into the gate of a MOSFET IRFBC20 with no capacitor coupling? Perhaps a stopper resistor?
Also, I have a lot of Amperex 6DJ8s. Might they be up to the task? Frugality would seem to warrant using up some of my tubes that I already have, but I know your penchant for good engineering.
Finally, Is this the kind of splitter you are describing?
One more question: How do I figure a good value to use for the source and drain load resistors on the splitter? I found a source talking about tube cathodynes, but not much on the values for MOSFETs.
Thanks for any further help you can offer!
--Jeff
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Follow Ups
- RE: Driving 6Y6GTs with El Cheapo 12AT7 front end? - jyourison 04/25/1319:03:17 04/25/13 (17)
- RE: Driving 6Y6GTs with El Cheapo 12AT7 front end? - Eli Duttman 22:06:45 04/25/13 (16)
- Would any of these triodes also work? - jyourison 17:13:45 04/26/13 (15)
- RE: Would any of these triodes also work? - Eli Duttman 18:08:07 04/26/13 (14)
- O/P Stage - Eli Duttman 08:06:52 04/29/13 (4)
- Bias - Eli Duttman 12:45:52 04/29/13 (3)
- Small Signal Hen Scratches - Eli Duttman 20:11:16 04/28/13 (0)
- B+ PSU Hen Scratches - Eli Duttman 00:36:32 04/28/13 (6)
- RE: B+ PSU Hen Scratches - jyourison 03:32:34 05/6/13 (1)
- RE: B+ PSU Hen Scratches - Eli Duttman 05:44:53 05/7/13 (0)
- Capacitor Value - Eli Duttman 17:50:51 04/28/13 (0)
- RE: B+ PSU Hen Scratches - jyourison 08:48:21 04/28/13 (1)
- RE: B+ PSU Hen Scratches - Eli Duttman 09:41:50 04/28/13 (0)
- Addendum - Eli Duttman 01:30:02 04/28/13 (0)
- RE: Would any of these triodes also work? - Eli Duttman 21:45:46 04/27/13 (0)
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