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Old 14th November 2006, 01:52 PM   #31
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Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
it's a little OT -- but we had someone turn on a device with SMPS in our little airplane (Piper Aztec) and it drove the auto-pilot off course.
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Old 14th November 2006, 02:00 PM   #32
ssanmor is offline ssanmor  Spain
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Join Date: Jan 2002
Location: Madrid
Yes, these things sometimes have some funny effects

However, not all SMPS are made equal, and there a lot of things that affect their performance and EMI behaviour, so design has to be very careful

As you describe it, perhaps that auto-pilot problem was caused by a problem of startup inrush current producing a peak in the system, more than purely EMI/RFI ???

Anyway, talking about airplanes is a different issue, you only have to look at commercial aviation, where you can't even play with your GameBoy during takeoff or landing!
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Old 23rd August 2011, 07:31 AM   #33
radio is offline radio  Macedonia
Join Date: Oct 2009
Location: Bitola MACEDONIA
Ignore theory,... give SMPS project for 2x(35 ... 50)V/2x5A (PCB layuot and schematic)!
thanks and cheers !!
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