PMA said:
Did I make a confusion?
Was it you that e-mailed me?
Actually I'm a little confused now, two Pavels...😀
We were actually e-mailing 2 days ago. The matter was OPA627+BUF634 and you wrote the first mail. Most probably you e-mailed with Pavel Dudek too, I just wanted to prevent confusion 😉 .
PMA said:
Just to put more fire on the confusion. The one who e-mailed was me.
Too many Carlos and too many Pavel on this Forum!!!
Carlos
carlmart said:
Are you joking Carlos?
I hope so.
We speak the same language and we have the same name.
Any problem with my name?😉
With so many members on this forum I think this is normal.
No?
carlosfm said:
Are you joking Carlos?
I hope so.
We speak the same language and we have the same name.
Any problem with my name?😉
With so many members on this forum I think this is normal.
No?
Of course I am joking? Why should I have a problem with your name?
What is not normal and is laughing matter is two Carlos and two Pavels doing a confusion on the same forum. Looks like a mad hotel!
Carlos
🙂 🙂
If you put some smiles it's easyer to understand that you are joking.😉
This site has the most beautiful smiles in the world.😀
The confusion is that I have those mails at home, in Outlook, and in the last couple of days my PM is not working properly, but you're right, this seams like a mad hotel.😀
This faces are so funny.
This site has the most beautiful smiles in the world.😀
The confusion is that I have those mails at home, in Outlook, and in the last couple of days my PM is not working properly, but you're right, this seams like a mad hotel.😀
This faces are so funny.
It's nothing agains 17 000 wiews only on your GC page 😉 . But I don't got any question - all is for guys here quite clear and mainly it is too complicated, 'cos password of the day is simlicity 😎 . Many thanks.
I'm sorry to say but the most of _my_ hits are "noise". I have no statistics over how many downloads have been made, just hits. My new web hotel www.b-one.net has statistics but not my ISP Tele2.
I'm amazed over the interest, at least in downloading. Of all 4709 downloads so far most of them comes from this thread. I see a great interest from Slovenia, Czech, Hungary, all other European countries (Sweden at the top), Austraila, Canada. Not so many from US! Very few from Asia and noone from Russia!
It is only academic interests 🙂 - only two guys ask me about PCB's 
and they lives in America 😉 - you know, poor Europe 😀 .
and they lives in America 😉 - you know, poor Europe 😀 .
Measuring of distortion on PA 03 ( LM 4780)
Yesterday I was try measured with my friend this amp. I was very pleasantly surpraised with results. Judge with me in short - ( measured was only one frequency - 6 kHz - and noninverting mode with input amp OPA 134 ). Load 4 Ohm : 250 mW : 2 nd harmonic - 75 dB, 3 rd harmonic - 88 dB . 1 W : - 79,5 2 nd / - 91 3 rd. 4 W : - 88 2 nd / - 97 3 rd. 16 W : - 90 2 nd / - 102 3 rd. 50 W : - 92 2 nd / - 108 3 rd. Load 8 Ohm : 0,5 W : - 89 2 nd / - 91 3 rd. 2 W : - 95 2 nd / - 97 3 rd. 4 W : - 98 2 nd / - 101 3 rd. 8 W : - 98 2 nd / - 102 3 rd. 16 W : - 102 2 nd / - 107 3 rd. 32 W : - 97 2 nd / - 110 3 rd. Can you wonder, that is this amp so popular ?
Yesterday I was try measured with my friend this amp. I was very pleasantly surpraised with results. Judge with me in short - ( measured was only one frequency - 6 kHz - and noninverting mode with input amp OPA 134 ). Load 4 Ohm : 250 mW : 2 nd harmonic - 75 dB, 3 rd harmonic - 88 dB . 1 W : - 79,5 2 nd / - 91 3 rd. 4 W : - 88 2 nd / - 97 3 rd. 16 W : - 90 2 nd / - 102 3 rd. 50 W : - 92 2 nd / - 108 3 rd. Load 8 Ohm : 0,5 W : - 89 2 nd / - 91 3 rd. 2 W : - 95 2 nd / - 97 3 rd. 4 W : - 98 2 nd / - 101 3 rd. 8 W : - 98 2 nd / - 102 3 rd. 16 W : - 102 2 nd / - 107 3 rd. 32 W : - 97 2 nd / - 110 3 rd. Can you wonder, that is this amp so popular ?
What's new ? I was testing this amp against PMA's new class A amp and against my old DPA 380 ( mosfet, error correction). Both this amp have extremly low distortion, so competition was hard 😉 . I can't say that sound is the same, but I may say, that in comparision related to price and " easy to made " is this amp definite winner. Sound is little different, which is caused by quasycomplementary connection and every this ones have by my experiences different sound ( both others are complement ). I mean, that guys from NS give to people with this type of amp maximum of possible. Soud is little less jingle such then other ones, but distortion is not hearable ( look at measuring results above ). This relatively comlicated modul I can make about six hours and Brian's modification one or two, while classical amp about five days 😎 . Now my frieds are making own and when they will be ready, I will be refering here their experiences 🙂 .