In Reply to: Ping Allen Wright - PP-1C harmonic distortions graph posted by Ray Moth on February 17, 2007 at 17:49:03:
I wonder if he's using the old westrex trick. More info found by searching for Lynn's "Karna" amp.It's a really wierd trick, where you unbalance a balanced stage. That is, turn a differential pair into two separate SE stages. Yet inputs and outputs are still coupled with balanced trannys. Theoretically this puts harmonics back in line. Something about cancelling both even and odd harmonics.
I haven't quite figured out why it works. My first impression is that it just seems wrong. Perhaps the beauty of it is counter-intuitive.
jh
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Follow Ups
- Harmonic Balancer? - Jim Hagerman 11:32:41 02/19/07 (6)
- Nope - schematic linkbelow. - Allen Wright 04:41:01 02/22/07 (0)
- Why the harmonic equaliser works - Mark Kelly 02:44:36 02/20/07 (4)
- I don't - my motto is KISS! (nt) - Allen Wright 04:55:21 02/22/07 (0)
- Re: Why the harmonic equaliser works - Ray Moth 23:21:53 02/20/07 (2)
- 2nd harmonic current flows in the centre tap of the transformer - Mark Kelly 01:26:13 02/21/07 (1)
- Re: 2nd harmonic current flows in the centre tap of the transformer - Ray Moth 11:00:35 02/21/07 (0)