> It SEEMS that it should be possible to avoid all this if there were > something like the old PC power supplies that had the inlet, power switch, > etc. all enclosed in a box with just the DC outputs coming out of the box. > We'd shove the power supply up against our rear panel and have no line > connected circuitry in our product other than that "pre-approved" box. I > think this is similar to using an external low voltage power supply. Isn't that what UL approved supplies and wall-warts are for? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist