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Jon Titus
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Re: Part IV: Fundamentals of Digital Debugging
Jon Titus   1/19/2012 6:03:19 PM
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Q: We had a major computer failure (intermitent) that turned out to be a bad power supply ($5000 later).

 

A:  That reminded me...  Check for 50- or 60-Hz signals in analog circuits.  You can pick up noise from nearby electrical circuits.  Also, higher-frequency noise from switch-mode power supplies.  I have uncovered ground loops that cause problems, too.  If you don't check power first you can chase your tail for a long time.



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