What is a good BIAS for EXICON lateral MOSFETs?

[huggygood]

this one,without any hesitation !!
http://jm.plantefeve.pagesperso-orange.fr/30W_Nrds.pdf

 

[jacques antoine]

this one,without any hesitation !!
http://jm.plantefeve.pagesperso-orange.fr/30W_Nrds.pdf

It is the one I laid my eyes on but I preferred to have an independent opinion!
I wonder if I can replace the obsolete 2SK30 with J112 from my stash.
Would you happen to have the PCB layout handy or a copper side picture? Otherwise I will have to do some reverse enginnering...
To stay in the thread, it seems to be biased at 100mA per pair of mosfets.

 

[huggygood]

The best thing is that you ask JM Plantefeve directly, he is very affordable and friendly, you can easily find him on his site or on two or three French forums.
I cannot disassemble mine, too complex, otherwise I would have done with pleasure.

 

[huggygood]

il est sur Melaudia
https://forums.melaudia.net/showthread.php?tid=10152

 

[phase]

100-120ma has always seemed like the sweet spot in push pull arrangements.

Also, the Fair-Rite #2643001601 has worked well to help with oscillation when using lower value gate resistors like 100 ohms. Use them on both the gates and drains.
All kinds of other great info in the Exicon data sheet too.

 

[abstract]

The datasheet has a plot of Vgs vs. Ids for -25 deg, +25 and +75. The cross-hair point where they meet is about where you want to be, or about 120mA for the 8A N-channel.

 

[cgraf]

Bonjour guys. Any progress with the nrds amplfifier ? I am very temped to build one. Is there any pcb layout available ? or is the layout to be made (not a real problem either, with so many pcb professionals on diyaudio.

 

[adason]

Yes, I think 100 mA is a good level.
Thanks.

So, have you built the schematics you posted? How does it work?

 

[jacques antoine]

Bonjour guys. Any progress with the nrds amplfifier ? I am very temped to build one. Is there any pcb layout available ? or is the layout to be made (not a real problem either, with so many pcb professionals on diyaudio.

I got the pcb layout from JM Plantefève. Will post it in a few days when I am back in town. Got all the parts and will start soon.

 

[atisa188]

220=1V