ultimate mosfets for aleph 4? - diyAudio
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Old 3rd June 2001, 02:42 PM   #1
hifi is offline hifi  Sweden
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Join Date: Mar 2001
Location: sweden
which shoudl i choose....i have bounced this question back and forth now....


IRFP140
IRFP240
IRFP250

wich would be the best for alpeph 4 (in your opinion) or shold i go for something else??


micke
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Old 3rd June 2001, 05:01 PM   #2
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Join Date: Jan 2001
Location: Scandinavia
Default Do what the Master says

The Master uses IRFP240 or derivatives thereof.

If you pick of MJ Audio Musings or something like that (Japanese mag, only found it once), you will see a lot of references to other more esoteric devices. Harris Ultrafets etc.

Perversely, you should look for devices which have a relatively high on-resistance (due to lower input capacitance). Naturally big package and low thermal resistance is a bonus.

Nelson Pass (The Master) has commented on this in another thread recently.

Petter
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