> > > OK, using an AT&T part ATT2406ABI, a 100ohm 15W resistor (caddock) and > 4 caps, you get a nice 100mA 5VDC supply, tal > king up about 1" x 1.5". Heatsinking the resistor is mandatory. Cost > is about $8.00. In my case, I needed to put this and the PIC and ISD > all in a single gang outdoor enclosure. Fits quite nicely. The unit > is sealed and no-one is going to get zapped. As a safety measure, you > could put the 110 L1 thru a switch that is enabled with the cover on, > disabled with it off, thus protecting it. Cost for a small 100mA xfrmr > is around $5, plus bridge re > gulator, caps, etc would put it near $8 range. BUT, small size is what > I needed. Umm, just out of curiosity, I know it's slightly off-topic, but what is an ATT2406ABI? Some sort of combination rectifier/regulator? -ben -- Benjamin A. Tober - -WBRS FM - 100.1Mhz in Waltham,Ma. email: tober@cs.brandeis.edu -FreeLiveMusic Four Times Weekly "Are you a truck?" -24hr/day all-genre diversity