May I draw attention of the respected diyers to a new amp by Mr. Renardson
http://www.angelfire.com/ab3/mjramp/newamp2.html
The PCB will be available soon, if you need it, drop a note to Mr. Renardson
http://www.angelfire.com/ab3/mjramp/newamp2.html
The PCB will be available soon, if you need it, drop a note to Mr. Renardson
Attachments
another amp
And another amp based on the same principles from Czech
http://petrh.czweb.org/renardson.php
And another amp based on the same principles from Czech
http://petrh.czweb.org/renardson.php
Attachments
There is a cross-over distortion error correction in both schematics, listenning experience would be appreciated.
dear milwood and sss,
you can read there
http://www.angelfire.com/ab3/mjramp/
or I can send additional info to you
you can read there
http://www.angelfire.com/ab3/mjramp/
or I can send additional info to you
dimitri,
you are probably using MicroCap7. Have you tried harmonic analysis? I would like to know whether there are or not higher order harmonics, and of what value.
Pavel
you are probably using MicroCap7. Have you tried harmonic analysis? I would like to know whether there are or not higher order harmonics, and of what value.
Pavel
Sorry for my slip,
instead "current through nonswitching negative (lower) output device"
please read "current through nonswitching positive (upper) output device"
Pavel, yes, it is uC7, I have not tried harmonic analysis, don't trust simulators... But it is not a problem
instead "current through nonswitching negative (lower) output device"
please read "current through nonswitching positive (upper) output device"
Pavel, yes, it is uC7, I have not tried harmonic analysis, don't trust simulators... But it is not a problem
Dear Pavel,
Could you please translate the abovementioned pages:
http://petrh.czweb.org/renardson.php
http://petrh.czweb.org/renardson_2.php
I tried to contact Petr Holub several times but failed 🙁
Could you please translate the abovementioned pages:
http://petrh.czweb.org/renardson.php
http://petrh.czweb.org/renardson_2.php
I tried to contact Petr Holub several times but failed 🙁
Dear Dimitrij,
I am sorry but I have not that much time. There is nothing new compared to original Renardson's publication.
Regards,
Pavel
I am sorry but I have not that much time. There is nothing new compared to original Renardson's publication.
Regards,
Pavel
I got several comments from the board members that the amp will have low disto only with active load, and with reactive loads it will be the same as ordinary class B.
Now Mr Renardson checked the 20kHz distortion with a parallel capacitance, and added the result to the test page. The distortion was higher than before, but the load impedance is lower, so some increase was expected, but there is no serious crossover problem.
Now Mr Renardson checked the 20kHz distortion with a parallel capacitance, and added the result to the test page. The distortion was higher than before, but the load impedance is lower, so some increase was expected, but there is no serious crossover problem.
this one ?
https://www.firstwatt.com/pdf/art_a40.pdf
URL is dead - go to
Zesilova? s korekc? p?echodov?ho zkreslen?
https://web.archive.org/web/20040409233632/http://petrh.czweb.org/images/renardson/renardson.gif
I am looking for commercial amplifier brands, who use this approaches.
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