Charles Craft wrote: > A search on "transformerless" at www.microchip.com brought up 5 documents: > AN236 - X-10 Home Automation Using the PIC16F877A Release Date: 10/30/02 > TB008 - TechBrief Tranformerless Power Supply Release Date: 8/26/97 > DD2016 - Freezer Protector Release Date: 4/22/98 Three of these documents recommend connecting the circuit to the grounding (safety) conductor of a 3-wire plug, and then putting a fuse or other component between the grounding conductor and the grounded (neutral) conductor. THIS IS A MAJOR SAFETY RISK AND IS BLATENTLY ILLEGAL IN THE US AND PROBABLY ELSEWHERE AS WELL! The grounding conductor must never intentionally carry load currents. This type of transformerless power supply must be completely isolated from the safety ground! -- Dave Tweed -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics