Any thoughts on if a matching transformer should
'click' when the key is released... Obviously it is likely an inductive
reaction to the rapid change in current supplied... When I connect the 48V
supply to the system the finals don't last long... OK at 12 and 24V so I feel
it is a inductive kickback that's blasting the 200V rated FETs... The
system works great into a 6 ohm load driver pushpull without the match
xfmr... It must be the inductive kickback...
Perhaps the inductance of the windings it too
Damn physics... To quote a power engineer friend
of mine "it's a damn shame that FETs behave the way they do, otherwise they
would be the perfect device..."