Hello, TimeNutters-- I used the Analog Devices AD588 chip
> http://www.analog.com/static/imported-files/data_sheets/AD588.pdf < to build a precision current reference for an older model HP-628B clamp-on current meter. I used the precision 10VDC to feed a 0.1% 1K resister for a 10mA reference. I brought a loop of wire in series with the 10K resistor out to the front panel for access by the probe. The meter's full-scale meter ranges are: 1mA - 3mA - 10mA - 30mA - 100mA - 300mA - 1A - 10A The HP628B clamp-on current meter has been a very useful item on my work bench and the precision 10mA current reference to check the meter calibration has been very handy. Mike Baker _______________________________________________ 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.
