In message <[EMAIL PROTECTED]>, Hal Murr ay writes: > >> (My goal is to add digital voltage and current monitoring to some >> older bench power supplies.) > >Measuring voltage is simple. If the input range is too big, you need a few >resistors. If it's small, you lose a few bits from the top of the A/D. Add >an op-amp if you need them. > >Measuring current gets tricky.
Actually not, there are several good chips like the INA197. Or the very simple way, buy a suitable hall-effect current monitor like LTSR from Lem.com. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
