Big Mosfets
#1 Big Mosfets
Santa left me a nice gift...
A matched quad of IXFN280N085 mosfets
https://www.mouser.co.uk/datasheet/2/24 ... 321136.pdf
and a matched quad of STE250NS10 mosfets
https://www.mouser.co.uk/datasheet/2/38 ... 205061.pdf
Hmmm...
A matched quad of IXFN280N085 mosfets
https://www.mouser.co.uk/datasheet/2/24 ... 321136.pdf
and a matched quad of STE250NS10 mosfets
https://www.mouser.co.uk/datasheet/2/38 ... 205061.pdf
Hmmm...
Sorry, I couldn't resist!
- pre65
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#2 Re: Big Mosfets
Have you a cunning plan for them Ray ?Ray P wrote: ↑Mon Dec 25, 2023 9:21 am Santa left me a nice gift...
A matched quad of IXFN280N085 mosfets
https://www.mouser.co.uk/datasheet/2/24 ... 321136.pdf
and a matched quad of STE250NS10 mosfets
https://www.mouser.co.uk/datasheet/2/38 ... 205061.pdf
Hmmm...
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
#3 Re: Big Mosfets
Yes, I'm scheming with a guy on DIY Audio, Phil, I can't share a schematic yet but it'll be on the theme of the Pass VFET design
https://www.diyaudio.com/community/atta ... f.1035400/
I'm working on a build of the 2SK60 variant of the pass VFET at the moment (I have three pairs of the Sony 2SK60 devices).
The scheme is to do something along similar lines but with a Tokin THF-51S SIT instead of the VFET and a puck Mosfet instead of the IRF250 and perhaps another variant with puck Mosfets in both positions.
A pair of the pucks could be good for a meaty MoFo project
Sorry, I couldn't resist!
- pre65
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#4 Re: Big Mosfets
I did build something with a pair of pucks, but I can't remember the details. I will try searching, it's on this forum somewhere.
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
- pre65
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#6 Re: Big Mosfets
It was a Nelson Pass design for a single ended 50W mosfet (SOT-227 package) amp, with Schade feedback to give it triode type curves.
https://www.audio-talk.co.uk/phpBB3/vie ... php?t=6575
See post #12 for the circuit.
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
- pre65
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#8 Re: Big Mosfets
Well, like so many of the amps I built it morphed into something different, in this case the MoFo.
I remember it sounded rather good, but, even with the big heat sink and a fan, it got quite hot.
In many ways, the main enjoyment I got was from the actual build.
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
- Dave the bass
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#9 Re: Big Mosfets
I can understand that in your case.
What with your taste in music its never going to be easy to find any enjoyment there....
Bwahahaha <heavily reverbed evil laughter> etc etc etc.
"The fat bourgeois and his doppelganger"
#10 Re: Big Mosfets
Sorry, I couldn't resist!
- Mike H
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#11 Re: Big Mosfets
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."