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Old 16th March 2013, 09:37 PM   #3911
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FLG, Antoinel,

What difference is there in these two variations?
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Old 16th March 2013, 09:47 PM   #3912
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Quote:
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this is ( at least - something as it was ) all in what I was interested in mid 1970s ..........
Also my transportation [poor grad student] to class.
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Old 16th March 2013, 09:50 PM   #3913
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Originally Posted by buzzforb View Post
FLG, Antoinel,

What difference is there in these two variations?
Sorry buzzforb, I still can't open the attachment on the left. It locks up in a "loading" state.
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Old 16th March 2013, 09:51 PM   #3914
flg is offline flg  United States
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Quote:
Originally Posted by Zen Mod View Post

this is ( at least - something as it was ) all in what I was interested in mid 1970s ..........
My ride was a Raliegh 10 speed, that I worked and saved every penny for. Until about '75 when I got a '65 VW
A time gone by
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Old 16th March 2013, 10:12 PM   #3915
flg is offline flg  United States
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Quote:
Originally Posted by buzzforb View Post
FLG, Antoinel,

What difference is there in these two variations?
What he said! I could "Save picture as" and open it but no resolution. Basically, I think the same Except the phasing is important and I can't see it clearly? It is important to remeber the feedback in F6 is not negative with respect to the input. I don't think I want to call it positive feedback but... Or current feedback but...
If your phasing is correct, then I beleive your concept may work, and be more "Balanced" where mine is only bridged and X'ed. It appears to be the same difference seen in the Aleph X amplifier vs the image on the XXX899 patent 1st page.
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Old 16th March 2013, 10:17 PM   #3916
Zen Mod is offline Zen Mod  Serbia
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frankly - to mid '70s - even that was too big , for future Mighty ZM ...........

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Old 16th March 2013, 10:20 PM   #3917
Zen Mod is offline Zen Mod  Serbia
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....... It is important to remeber the feedback in F6 is not negative with respect to the input. I don't think I want to call it positive feedback but... Or current feedback but...
.....
it is veeery negative feedback ; fact that is "unconventionally" connected back to input is piece of puzzle which is saying that you aren't so keen with toob circs ( feedback from out to input cathode)

funny , nobody said that feedback arrangement is exactly the same as in F5 ?
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Old 16th March 2013, 10:28 PM   #3918
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Default Operation of Bablefish F6x [BFF6x part 2]

The schematic of BFF6x is attached. Note the following:
  • Suppose the coupling capacitor to the gate of the lower JFET of the Right side amp is poor, and thus expresses a sustained distortion.
  • The half shaded sine wave signal showing an arrow point up is a qualitative pictorial of this distortion [a Pass technique] .
  • It follows that the resultant power output distortion signal shows the distortion arrow pointing down because the lower JR100A inverts its absolute phase.
  • Most importantly, it follows that the distortion signal is also injected in the coil which is attached to the gate of the lower R100A
  • Here is the magic of this Zen Mod schematic. The distortion signal is transmitted to the remaining 3 coils via transformer action. Note the phase of the distortion signal at the gates of the remaing 3 R100As, and especially at the power output of the Left side amp. The iron core of the transformer which is common to the four coils is the intermediary which enabled the Right and Left amplifiers to "talk" to each other [share and deal with this distortion].
  • The verdict is crystal clear. The distortion signals at both power outputs are in phase, and are of similar amplitude. This power distortion signal will not flow through a loudspeaker which bridges the two power output ports. This amplifier has a unique property of distortion cancellation; absent in the individual or stand alone Right and Left amps.
Future action. The presentation of Mr. Pass on F6 is a great working model for Zen Mod to pursue.

Best regards
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Old 16th March 2013, 10:39 PM   #3919
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pretty much everything as I said ; you can always count on my Dumb Greatness , same as my Spy Bird in FW ( sometime even PL ) cousine ;

maybe Mithrandir ( artist also known as my Pa ) send me that sketch , feeling enooooormous pity - seeing me as fish out of water ( however - my usual state/condition) ?

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Last edited by Zen Mod; 16th March 2013 at 10:43 PM.
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Old 16th March 2013, 10:41 PM   #3920
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Big dummy.
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