I can't offer any additional comments regarding the actual quan of elections you can capture:>: But, Maxim has a ready to go power supply that is designed specifically for this purpose and there is lots of tech-talk in the Ap Note regarding the phone lines. I don't remember the name of the Ap Note, but you should be able to find it easily. I think they were talking about some real power and the power supply did the conversion to a lower voltage at the same time. Good Luck. Art At 10:54 AM 9/17/03 -0500, you wrote: >At 03:50 AM 9/18/2003 +1200, Russell McMahon wrote: > > >> >> Does anyone have any idea how much power you could tap from > >> >> the line without causing it to go off hook? > >> > > >> >The phone companies have some definite ideas about this :-) > >> > >> 3ma is allowed. > >> in the real world, your on-hook voltage can be as low as 12v, though this > >would be a rare case. > > > > > >I'm not saying that that isn't true. > >I've been out of the formal telcom field for a decade or so now. > >garrgh... >my brain said 3ua, and my fingers said 3ma.... > >-- >http://www.piclist.com#nomail Going offline? Don't AutoReply us! >email listserv@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body