Nyquist and Fuses

Doug--That was an excellent explanation of the Nyquist
Theorem. By the way, my usual reply to the mathmatician
is that a compact disk player runs at 44KHz. This is
(remarkably) double the frequency that the human ear can
detect. Since a trillion dollar industry is based upon
sampling a waveform at only twice its frequency, it must
be good enough even for transient functions.
Different subject members--I used to work for a fuse
manufacturer. Never use a fuse to protect a sensitive
FET. Circuit breakers and fuses are remarkably slow
devices and will keep delivering the juice long after
the semiconductor has been oxidized to a lump of sand.
You need to use a fast semconductor to stop or shunt the
excess current in order to protect the FET. But you already
knew that.--Marc