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renardson-audio.com - Audio Amplifier Design
http://www.renardson-audio.com/
THE MJR7-Mk5 LATERAL MOSFET CLASS-AB POWER AMPLIFIER. Tested at 4V into a 7R5 load to check for crossover effects the 1kHz distortion was mostly second harmonic under -120dB (0.0001%), achieved with only 100mA quiescent current. Power output is around 30W into 8ohms with a single 60V supply, or higher voltages can be used for up to about 100W.
Latest News - renardson-audio.com
https://renardson-audio.com/latest-2.html
I plan to delete the renardson-audio.com site eventually and just leave the 'free' Angelfire site as a permanent version. For now I am updating both sites. Dead links are a never ending problem. I still get occasional questions regarding circuit boards for the MJR7 amplifier, and a few years ago I did make and sell a few, but only about 30, the design has never been highly popular.
Signal Generator Design - renardson-audio.com
http://renardson-audio.com/gen2.html
Choosing a single supply bypassing capacitor of a few uF with leads close together and as short as possible to minimise series inductance is my approach for most audio applications. Using the OPA2134, by adjusting the 220R in the twin-T the 3rd harmonic could be reduced to -120dB relative to the 1kHz fundamental, but the 2nd harmonic changed ...
Class-B Feedforward Amplifier - renardson-audio.com
http://www.renardson-audio.com/B-amp.html
The same problem was treated by Douglas Self in his articles "Thermal dynamics in audio power" in Electronics World, Part 1, May 1996, p410-415 and Part 2, June 1996, p481-486. The second remaining problem is how to match the temperature coefficients of the Vbe multiplier transistor and the output stage transistors.
Renardson New Class B - Linear Audio NL
https://linearaudio.nl/sites/linearaudio.net/files/renardson%20new%20class%20B.pdf
AUDIO DESIGN Fig. 1. This familiar circuit gives an output across its load equal to the difference between its inputs. bias Fig. 2. The top half of this power output stage — the circuit of Fig. — subtracts output from the other half, V3. 274 Mike J. Renardson's simple enhancement of a standard class-B output stage dramatically reduces
renardson-audio.com Competitive Analysis, Marketing Mix ...
https://internal.hub.alexa.com/siteinfo/renardson-audio.com
What marketing strategies does Renardson-audio use? Get traffic statistics, SEO keyword opportunities, audience insights, and competitive analytics for Renardson-audio.
new Renardson amp | diyAudio
https://www.diyaudio.com/community/threads/new-renardson-amp.30819/
”This fellow Renardson, is amazing! He re-invents all of audio circuitry, and then says that high power is not needed in the home”. Attachments. mjr-new-sim.gif. 6.1 KB · …
MJR7-Mk5 by Renardson | Page 4 | diyAudio
https://www.diyaudio.com/community/threads/mjr7-mk5-by-renardson.301356/page-4
Thanks for the comments Mike. I just looked again at the sim. Iq is 93mA, I could make it nearer 100mA by adjusting the bias chain a bit, but I suspect it will not make much difference. WRT the layout: the distortion is very similar for both channels i.e. the one that is close to the smoothing...
DIY Audio Projects Forum • Michael Renardson's MJR7 ...
https://diyaudioprojects.com/Forum/viewtopic.php?t=4223
Faced with restoring or modding a vintage Dynaco SCA-80Q, I found Michael Renardson's single-rail, ultra-low distortion design. Mike provided the board with all components except the large electrolytics and the MOSFETs, which I sourced from MCM Electronics. A fun build. I choose to bypass the Dynaco's primitive preamp, as well, and go passive.
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