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Originally Posted by Gdeaver
Would a fet swap in the victors be legal? Adding better heat sinking?
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<R27> and <R59>, read together, appear to preclude using any controller other than a Victor 884 and any custom circuit component that directly alters the electric power pathway. A FET different than the ones originally provided in the Victor 884 would not comply.
I haven't found a rule against a custom cooling device; however, keep in mind that the tabs on a TO-220 package FET are common to the Drain terminal (middle pin), so some tabs are common to a motor output and others are common to the +12V power input. This means that heatsinks attached directly to FET tabs could become electrical fault hazards. I would not want to have to inspect Victors that had been modified by adding heatsinks directly to the FET tabs.
IMO the fan provided with each Victor is the most effective and safest way to cool it.
__________________
Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)