On Sat, 2007-03-31 at 22:37 -0400, DJ Delorie wrote: > So, would an isolated probe need an isolated power supply also? Those > could get expensive. Isolated power supply, opto-isolated digital > gain control, opto-isolated return data stream, etc.
Yes, but they can be done very simply, or picked up as ready built and encapsulated modules. All it needs is a small ferrite transformer (with appropriate isolation standard), driven by a high frequency square-wave. Rectify on the other side, and linear regulate as needed for measurement stability. I assume you mean the isolated power-supply which powers the probe's active circuitry on the "isolated" side of the system. -- Peter Clifton Electrical Engineering Division, Engineering Department, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA Tel: +44 (0)7729 980173 - (No signal in the lab!) _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
