Hi Thimios, the value is important here for the right phase correction (especially the 27pF one). Ceramics are fine. So, better use 27pF and 10 pF ones.
Thanks Valery.
Second chanel ready for test.
Second chanel ready for test.
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Thanks Valery.
Second chanel first test passed!
No smoke no boum.
Picture N.2 the bulb in series with the primary side, the idle current (not adjusted yet) and the output offset.
I use two protective devices. The bulb in series with the transformer's primary winding and two 22R/10w resistors in series with each rail.
Yes yes, fuses are blown.
Second chanel first test passed!
No smoke no boum.
Picture N.2 the bulb in series with the primary side, the idle current (not adjusted yet) and the output offset.
I use two protective devices. The bulb in series with the transformer's primary winding and two 22R/10w resistors in series with each rail.
Yes yes, fuses are blown.
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Yes, i have the answer now.
Picture 1 the trimmer turn in either direction up to see an in face signal.
Picture 2 trimmer in the opposite direction up to see the minimum signal BEFORE the signal turn the face and start to increase again.
Picture 1 the trimmer turn in either direction up to see an in face signal.
Picture 2 trimmer in the opposite direction up to see the minimum signal BEFORE the signal turn the face and start to increase again.
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Valery can likely explain this better than I can. I think what happens is as you pass the sweet spot of adjustment the ODNF circuit starts to operate backwards and tries to make the input signal match the output, instead of making the output match the input. The actual phase of the correction is set by C18, but it can become an inverter.
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Because English is not my first language , I find it difficult to describe in nice words how this amplifier sounds. I will make an effort though, it is pure, analytical, accurate, dynamic, very stable like a rock!
I think we owe a big thank you to Valery and Jeff for giving us such designs!
I personally owe many-many thanks!
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Thank you Thimios!
Great work on the build with attention to details
Hope you mount it in a cool chassis 😉
One more thing I want to mention. It's amazing to see how some ideas, experiences, teamwork efforts of different people, living in the different places across the planet, materialise in a practical piece of equipment here and there. Especially during these "not easy" times for all of us. Something that (along with some other things) makes me moving forward. Feeling of a big family
Cheers,
Valery
Great work on the build with attention to details
Hope you mount it in a cool chassis 😉
One more thing I want to mention. It's amazing to see how some ideas, experiences, teamwork efforts of different people, living in the different places across the planet, materialise in a practical piece of equipment here and there. Especially during these "not easy" times for all of us. Something that (along with some other things) makes me moving forward. Feeling of a big family
Cheers,
Valery
Hi Valery, see post #371,this time i have the chassis at the first! 😉
Yes i feel that i have another family here in diyaudio!
I couldn't have any progress without your help these days.
It's unbelievable what guys offer to me.
Good friends all over the world.
Best Regards to all of you!
Thimios.
Yes i feel that i have another family here in diyaudio!
I couldn't have any progress without your help these days.
It's unbelievable what guys offer to me.
Good friends all over the world.
Best Regards to all of you!
Thimios.
