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#1
February 24th 05, 02:33 AM
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Usually solid state stuff should be pretty dependable, but silicon
devices don't like reversed polarity spikes. These can happen if the master contactor ever stutters when the starter is engaged. I'm surprised there isn't more transient protection in avionics and solid state regulators. I realize that this particular failure sounded like a vibration problem, but a few more isolating and shunting diodes in our electronics would seem to help reliability a lot. 
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#2
February 24th 05, 03:00 AM
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Hello nrp,
I realize that this particular failure sounded like a vibration problem, but a few more isolating and shunting diodes in our electronics would seem to help reliability a lot. And some ferrites which can be awesome protection for the electronics in case you get into that surprise thunderstorm. When debugging EMI in a composite structure back in the 80's I was mighty disappointed with the EMI susceptibility of some NAV/COM gear. Regards, Joerg http://www.analogconsultants.com
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