Jfet F1

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Hi all!

Being a full range sucker since the dawn of time, the F1 really appealed to me, what did not though was the use of MOSFET´s. They (the MOSFET´s) have constantly failed to amaze me over the years, this might be because i have never tried any PASS amps? I first started to look at doing someting like the F1 but with BJT´s but then the power jfet entered the stage, thanks Nelson! I am now in the process of obtaining a few samples of the LU1014D to make someting like what you can see in the picture.
Anyone having the same thoughts?
Comments?
 

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LU1014 pspice

I´m using this model for now, it has a good enough fit. You can fiddle a bit with beta to get the correct dc bias point.

.MODEL LU1014D NJF (VTO=-1.8 BETA=1.7 LAMBDA=0.7 RD=0.0065 CGD=363P CGS=784P VTOTC=-2.6M)

BR,
Anders
 
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