In Reply to: You are absolutely right! posted by 6AS7_6SN7 on October 14, 2010 at 00:44:26:
Hi LucaHere is some old(1966) Philips AG9007 60W OTL Circlotron HI- FI Tube amplifier design.
Found interesting in this design that Philips designers used 2x2 symetrical Negative Feedback.
First NFB loop is symetrical from output stage to driver stage only,and second GNFB loop is symetrical from output stage to input stage.
Best regards
Check this link:
Edits: 10/14/10
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Follow Ups
- RE: You are absolutely right! - Banat 10:10:48 10/14/10 (0)