> I saw this same effect just last week. I was working with a dspic on a
> breadboard and had the scope attached and was noticing an odd waveform
> mixed in with what I expected from the dspic. I cut off the power to the
> dspic and waveform still there, started unplugging things around the
> bench looking for the culprit.  Found it, the new CFL bulb I had just
> put into my work lamp, I was using incandescent bulbs in it but they get
> really hot so I used a CFL. The interference occurred up to 10 feet
> away. Back to incandescent bulbs till I can get some LED going.
>
> Mark
>

And, of course, the LED lamp will have a switching power supply...

Harold



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