In Reply to: what's the application? posted by Dave Cigna on April 1, 2007 at 14:45:51:
Hello Dave,The driver stage is 12AT7 diff amp running at 9mA per tube / 250V plate. I am just juggling with the idea now, and although seductive in many respects i realize that at mu 65 and rp 13K it is a difficult tube to load properly.
Besides the price, what would be the disadvantages/trade-offs you see? IIRC, it is difficult to build high impedance trans with good freq response, but since there are practically no current flow maybe the use of permalloy would circonvent the problem... But at a hefty price tag for sure...
Thank you,
JD
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Follow Ups
- Re: what's the application? - SomeJoe 17:27:15 04/01/07 (11)
- Re: what's the application? - Dave Cigna 14:01:20 04/02/07 (10)
- Re: what's the application? - Gerd 03:26:56 04/03/07 (5)
- Re: what's the application? - Dave Cigna 13:16:56 04/03/07 (0)
- Re: what's the application? - mqracing 11:04:38 04/03/07 (2)
- Re: what's the application? - dave slagle 19:28:02 04/03/07 (1)
- Re: what's the application? - Gerd 23:42:31 04/03/07 (0)
- Re: what's the application? - dave slagle 08:41:43 04/03/07 (0)
- Might be better to consider a different tube huh? - Russ57 15:44:49 04/02/07 (3)
- Re: Might be better to consider a different tube huh? - SomeJoe 20:38:38 04/02/07 (2)
- Re: Might be better to consider a different tube huh? - mqracing 12:07:17 04/03/07 (1)
- Re: Might be better to consider a different tube huh? - SomeJoe 09:33:21 04/04/07 (0)