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Old 5th September 2018, 08:32 AM   #1401
marconi118 is offline marconi118  Germany
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what is the best N Mosfet for MoFo?

The highest YFS for lowest input capacitance at the working conditions I=2A U=15V

Found the
FQP20N06
FQP30N06 16 / 900pF
FQP33N10

bur their YFS are measured at higher current (more than 10A)... at 2A they are lower
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Old 13th September 2018, 09:55 PM   #1402
flocchini is offline flocchini  United States
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A number of people have mentioned using MOFO as headphone amp.
Any changes necessary?
Thanks
Bob
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Old 13th September 2018, 10:09 PM   #1403
MEPER is offline MEPER  Denmark
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Location: Copenhagen
Quote:
Originally Posted by marconi118 View Post
what is the best N Mosfet for MoFo?

The highest YFS for lowest input capacitance at the working conditions I=2A U=15V

Found the
FQP20N06
FQP30N06 16 / 900pF
FQP33N10

bur their YFS are measured at higher current (more than 10A)... at 2A they are lower


In the paper from MR I think it was concluded that IRFP250 was the best choice….…..


"You could substitute other MOSFETs, the old favorite IRFP240 for example, but the IRFP250 is just about optimal here, and they’re dirt cheap. I know some of you might want to experiment with Q1. I tried lots of other parts. I tried fancy, expensive parts from Cree and they did not have lower distortion. I also tried obsolete parts from Semisouth and Fairchild and they had slightly better distortion performance, but they’re unobtanium and of dubious merit here anyway."
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Old 14th September 2018, 03:45 PM   #1404
Bangla H is offline Bangla H  Germany
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Marconi

if you like to experiment i would suggest the FQA Serie.
A robust, for my own little opinion, good playing one FQA40N25.
FQA40N25 ON Semiconductor | Diskrete Halbleiterprodukte | DigiKey
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