> This project also needs isolated rs485 (for DMX in/out), and rather than > using the convenient but expensive MAX1480BCPI all-in-one chip as I have > Ouch! $27 ea at Mouser. > been doing, I'd like to make my own little iso dc/dc to save $ and > likely boardspace and avoid Maxim availability issues. > > Take a look at ROE-0505S. 5v in, 5v isolated out at 200mA, $3.60 in singles= .. Lots of lots alternatives too. Makes it a bit tough to cost justify a roll-your-own solution. -Denny --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .