L'Amp: A simple SIT Amp

Pass DIY Apprentice
Joined 2001
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I might be doing a poor job of wording on this puzzler, so here's what I was after:

Max VGS for the 2SK77B is -30V. The zener here is a voltage clamp.

Do we know the Max VGS for the 2SK82?
 

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Member
Joined 2002
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Perhaps Uncle Mike can comment on this. With a CCS, the current is limited
by design so things should be ok.

With inductor loading, I suspect there's not enough resistance for current limiting so one would
want to ensure the bias voltage to be up before and stays up after the main rail.

Would this be correct?
 
Pass DIY Apprentice
Joined 2001
Paid Member
Pass DIY Apprentice
Joined 2001
Paid Member
Well, I've never spent time with a real official First Watt SIT-1 amp. Hopefully, someday. I'd love to spend more time with the Beasts (of thousands of JFETs) too, but talk about unobtanium :)

I have spent time with the devices themselves, and I think a patient (read: willing to experiment and tune) DIYer can approximate the sound of a SIT-1 to a very satisfying degree with the Sony or Tokin parts.
 
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