Article View: sci.electronics.misc
Article #33Re: It's the RF that destroys the equipment
From: Sir Charles W. Shults III
Date: Sat, 19 May 2001 16:02
Date: Sat, 19 May 2001 16:02
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That is because of the inverse square law. Here is a nice experiment
for you to try.
Get a hand held radio or walkie talkie and put it next to a working CD
player. Key it. What do you see?
In some instances you will see nothing, but in most, the CD will stop
playing and the display will read "error". it is often necessary to power
the unit down completely before you can get this display to clear.
Higher power levels can permanently damage the electronics. You are
inducing voltages in the circuitry in two ways. The first is good old
fashioned "antenna" activity. The wiring and circuit traces are picking up
the RF and dumping the resulting voltages right into places that were not
meant to see such things. The second is the fact that every non-linear
junction (diode, transistor, IC) in the device rectifies the RF and places
pulsating DC in the circuit. They are acting as detectors.
Cheers!
Chip Shults
SPAM free Email - aichip@gdi.udu.net but remove the .baryon
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