Narsis / Kaneda MosFET Amp built

While scanning some of my downloaded KiCAD files (for reference), I found this one zipped folder, it contains 3 schematics in a whole KiCAD job files. The files I believe was shared by one member, he provided the link for downloads. It does contain one completed pcb lay out with gerbers included and one incomplete lay-out. The zipped files attached contains them all, (opens in KiCAD program).
The BJT version looks interesting to me, are these schematics a true Kaneda designs?
I wish I could open KiCAD files to see if there is a power board or just the input part and it needs to be hard wired?
Also if there is 3 different input maybe just pick one not all 3 of them.
 
I wish I could open KiCAD files to see
Quite easy, download a copy of KiCAD and install. KiCAD is a free open source program available for Windows and Linux OS'es. Unzip the folder and open it in KiCAD, just point where the unzipped folder is located, KiCAD will automatically scan the files. Or another way is, after unzipping the folder right click on any file, a dialog box will appear. Find 'opens with' and point to KiCAD. I wish I could show you images on how it is done but right now I am away from my laptop. I am the 'chef of day 😄

Found the source link maybe you could PM him..
https://www.diyaudio.com/community/threads/kicad-kick-start.416550/
 

Attachments

  • IMG_20240915_094852.jpg
    IMG_20240915_094852.jpg
    454.7 KB · Views: 67
While scanning some of my downloaded KiCAD files (for reference), I found this one zipped folder, it contains 3 schematics in a whole KiCAD job files. The files I believe was shared by one member, he provided the link for downloads. It does contain one completed pcb lay out with gerbers included and one incomplete lay-out. The zipped files attached contains them all, (opens in KiCAD program).
The BJT version looks interesting to me, are these schematics a true Kaneda designs?
50W Class A published in La Revue de L’Audiophile. From Bonavolta link https://www.bonavolta.ch/hobby/en/audio/tp2788.htm
 

Attachments

  • 50 W Classe A Pierre Johannet.jpg
    50 W Classe A Pierre Johannet.jpg
    350.2 KB · Views: 131
Last edited:
Schematic by Pierre Johannet published in "L'Audiophile"

Not every Double-Differential circuit is original Kaneda.
https://www.diyaudio.com/community/threads/kaneda-50w-class-a-amplifier.17178/post-3227431
https://www.diyaudio.com/community/threads/kaneda-50w-class-a-amplifier.17178/post-3227437

The picture also does not correspond to the link above (TP2788).
Maybe this one :
http://6bm8.lab.free.fr/Documentations/Revues/Audiophile/1977-1988/43/CLASSEA/CLASSEA.html



Patrick
 
Last edited:
  • Like
Reactions: de Ocampo

Attachments

  • tp2788.gif
    tp2788.gif
    23.3 KB · Views: 151
  • Like
Reactions: Remnant Parts
@EUVL
I was very impressed by your idea that you can get 2sk190 with 4x 2sk209. I want to make a Kaneda amplifier and it is difficult for me to get 2sk117. Can we create a 2sk117BL jfett using new generation jfets. There are currently jfets such as 2sk208-209-880 etc. LSK170 etc. You know better than me.
Which one do you recommend among Kaneda amplifiers? There are a few versions that I have chosen... Which one do you think is suitable?
 

Attachments

  • 6EE2577D-804F-48F1-996C-94B18305492E.png
    6EE2577D-804F-48F1-996C-94B18305492E.png
    469.9 KB · Views: 143
  • 7847CFE4-C3CC-49F6-9018-A6D4441B465D.jpeg
    7847CFE4-C3CC-49F6-9018-A6D4441B465D.jpeg
    83.7 KB · Views: 139
  • 1CFC650A-F4A2-4C24-A864-827C973FB4BE.jpeg
    1CFC650A-F4A2-4C24-A864-827C973FB4BE.jpeg
    304 KB · Views: 142
2SK209 is the SMD version of 2SK117.
But it has much lower dissipation.
I would not use it for more than 50mW.

The above schematics have a lot of voltage values given.
You can easily work out the current through a resistor using Ohm's law ( I=V/R).
If that resistor is in series with the JFET, it is safe to assume that they have the same current.
The power is simply P=V.I

If the JFET sees 50V and has a current of 2mA, then clearly 2SK209 will not do.
Using two in parallel doubles the capacitances.
So not direct replacement.

See also :
https://www.diyaudio.com/community/...-described-by-paul-kemble.220923/post-7797831


Patrick
 
Last edited:
  • Thank You
Reactions: sercan85