According to Sean Breheny on Wed, 01/23/13 at 14:51: >=20 > If your multimeter can measure AC volts, you can see if you measure > any ripple or noise on the wall-wart output, even without a scope. It can, but it is an el-cheapo and I only would use it for approximate work. I will see what the oscilloscope says and put more belief in that result. > What was the part number of the wall wart? Sorry, I'll have to go back and research that. I will look it up (it dates from several weeks ago) and post another reply to the list when I have found the part number. Thanks! Regards, web... --=20 William Bulley Email: web@umich.edu 72 characters width template ----------------------------------------->| --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .