Hello Edmond
I follow that the OPS is really not stable because it is missing base resistors and some collector resistors and some current sources are ideal types (I assume this is this what you mean).
But the point I am making is are you saying this arrangement has lower THD than a similar circuit that uses ETMC.
Regards
Arthur
Hi Arthur,
Yes. But maybe more is needed to make a triplet stable.
See for example: The YAP Output Stage
The THD20 was simmed with only a relative light load and at 1/4 of full power. At 1dB below clipping THD20 rises to 6ppm. So it isn't better than ETMC, but rather worse.
Cheers,
E.
Yes. But maybe more is needed to make a triplet stable.
See for example: The YAP Output Stage
The THD20 was simmed with only a relative light load and at 1/4 of full power. At 1dB below clipping THD20 rises to 6ppm. So it isn't better than ETMC, but rather worse.
Cheers,
E.
Edmund,
Maybe I'm not fully awake yet, but I don't see any caps across the driver BC in the schematic in your link.
For those who are interested, I just put Bruno's feedback article from Linear Audio Vol 1 on-line. It's downloadable from Linear Audio | your tech audio resource under the tab Online resources.
Enjoy!
jan
Enjoy!
jan
I assume the unlabled mustard-colored components pooged on the board in the bottom picture are the mentioned caps?
Edmond, I've pulled a post of yours with a personal attack. I hate losing the technical content, but that's the collateral damage from deliberate rules-breaking. Don't do that again.
triplet
Hi Pooge,
I also don't see any caps across the driver BC junction in the schematic.
As for the "mustard-colored components" (the two through hole caps, right?), maybe these are the 470pF 'BC-caps'.
BTW, I wonder if this is the ultimate solution. Perhaps there are better ways to tame a triplet.
Cheers,
E.
Hi Pooge,
I also don't see any caps across the driver BC junction in the schematic.
As for the "mustard-colored components" (the two through hole caps, right?), maybe these are the 470pF 'BC-caps'.
BTW, I wonder if this is the ultimate solution. Perhaps there are better ways to tame a triplet.
Cheers,
E.
Hi Edmond
Anything specific you have in mind?
BTW: thanks for your email. I hope that my email cleared a few things.
BTW 2 : I will update you regarding my Class D amp within a couple of days.
Cheers
S
Mike,
You are just parsing words. Please get over it and get technical with facts and simulations, preferably on the separate thread that I suggested you start on TPC vs TMC.
Perhaps Jan or Edmond will weigh in on your comments about who thinks what about TMC.
I'm at least glad that you read Linear Audio 🙂.
Bob
Here are also same arguments in favor of the TMC.
http://www.diyaudio.com/forums/solid-state/188133-tmc-tpc-my-dilemma-resolved.html#post2556581
http://www.diyaudio.com/forums/solid-state/188133-tmc-tpc-my-dilemma-resolved.html#post2556581
Well, Peter Baxandall is/was not given to "mine's better than yours". He concentrates on technical facts, explain pro's and con's and expects the educated technical person to take his own conclusion, and select the appropriate solution for his/her set of requirements.
I find this ego-posting destructive and wastefull of creativity and energy.
BTW Not aimed at you Bob.
jan
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stabilizing a triplet
Hi Stein,
Sure, something like this.
Indeed, it cleared a few things, but not Andy's drastic move. Now we can't see any longer how syn08 analyzed his triplet output stage. Probably vital info has been lost.
I'm eager to learn about it !
Cheers,
E.
Hi Stein,
Sure, something like this.
Indeed, it cleared a few things, but not Andy's drastic move. Now we can't see any longer how syn08 analyzed his triplet output stage. Probably vital info has been lost.
I'm eager to learn about it !
Cheers,
E.