Jerry BiehlerI have mostly finished the pass bank for the filament controller. It is separated into three banks, two 100A channels and one 400A channel. The two smaller channels got away with 1 big mosfet each, the 400A channel us using 4 APT20M11JLL mosfets in parallel. I am hoping the will be happy together. They have a very low on resistance (.011 ohm) so they ought to share current nicely.
Drilling holes in the heat sink:
Mosfets and standoffs in place:
Copper bus bars and fuses in place:
Discussions
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