F-4/BA-3 Transistor Kit
Included in this kit are the semiconductors needed to complete an F-4 amplifier or BA-3 output stage, with the exception of the input Jfets, which can be sourced separately through the store. Mosfets were matched in accordance with standard operating conditions.
6 - IRFP 240
6 - IRFP 9240
2 - TL-431
The IRFP9240/IRFP240 Mosfets were matched at the rail voltage and current that the BA3 and F4 articles suggest, specifically, 22v and .4A, and then grouped by VGS to within .1V.
Please note: the numbers on the MOSFETs are ID numbers only, and are not related to their measurements nor their matching
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