That article based on tda7293, which is upgraded vr of 7294. I didn't think about it because it was too complex for me at that time.
NanoFarad
As you can see at the lower part of page "38" refereed to 7294 as "predecessor of 7293". Anyway... It is not the perfect for me approach. I like the "dc servo" approach of "Xmas Amp" but "T feedback" seems to have lower distortion from all the above -for me- . But -again - all of them are using bootstrap capacitor and that exactly I want to avoid.
Elias
As you can see at the lower part of page "38" refereed to 7294 as "predecessor of 7293". Anyway... It is not the perfect for me approach. I like the "dc servo" approach of "Xmas Amp" but "T feedback" seems to have lower distortion from all the above -for me- . But -again - all of them are using bootstrap capacitor and that exactly I want to avoid.
Elias
I was somewhat surprised by this statement, to be honest. Anyway, as for sure I'm not of higher knowledge than the Elektor team, I won't debate it.
Best regards!
But why? You surprised me as well. At that time, many years ago when i just started eatching my own pcbs it wasnt easy for me to build 7293 version, also 7293 wasnt available to my city. Even still you can get 7294 easily but not 7293 at local stores. On the other hand if you surprised by using the word "upgarde", i was just trying to meant 7293 as superior to its predecessor 7294.
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If you refrain from more than ±40 Vdc supply voltage and paralleling devices, the 7294 will do. It's performance isn't worse than the 7293's.
Some time ago I was lucky to acquire a bag full of 9273's for reasonable money ;-).
Best regards!
Some time ago I was lucky to acquire a bag full of 9273's for reasonable money ;-).
Best regards!
I know, but 7293 has more features, clipping detector as well. It is somewhat more powerfull too.