In Reply to: RE: Input tube suggestions? posted by Paul Joppa on July 12, 2016 at 14:41:33:
I thought it would be better to show what I have in mind.
Keeping both sections of 6EM7, it would look like this.
Section 1: around 1mA, 200V, -2V
Section2: 42mA, 160V, -24V
300B: 60mA, 350V, -74V
Interstage transformers are designed for low rp tubes (600-900 ohm optimum. Ok from 300 to 1200 ) and from 40 to 80mA. Inductance around 31H (I over 30mA) . They can swing 85Vrms. DCR 152R/153R.
Don't know if I'll put a resistor at secondary of IT.
Power supply not designed yet (as you can see).
Maybe I forgot details but I'm not really a designer...Suggestions are welcome, thanks
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Follow Ups
- RE: Input tube suggestions? - Genp 19:29:32 07/12/16 (9)
- RE: Input tube suggestions? - fred76 10:44:05 07/15/16 (0)
- RE: Input tube suggestions? - hennfarm 11:32:46 07/13/16 (0)
- Here's a thought - sideliner 09:52:29 07/13/16 (3)
- RE: Here's a thought - Genp 16:31:11 07/13/16 (1)
- RE: Here's a thought - sideliner 20:02:34 07/13/16 (0)
- good suggestion, a no loss, 'learning' experiment~nT - Cleantimestream 15:49:46 07/13/16 (0)
- RE: Input tube suggestions? - sideliner 08:48:48 07/13/16 (0)
- RE: Input tube suggestions? - Paul Joppa 21:27:01 07/12/16 (1)
- RE: Input tube suggestions? - Genp 18:37:21 07/18/16 (0)