Decided to test the input bias current of some different OP-AMPS at 5V input. The 741 does quite well at 30nA, the 5532 is quite higher, 189nA, still within spec., and the LMC662 maxes out my Keithley 2400, last digit just wiggles all over the place… Need to power up the 3458A and make a decent setup on a small PCB.. That’s another night ☺️

#testandmeasurement #electronics #electronicsengineering #voltnut #rfengineer #hamradio #hamr

Preparing for some calibrations of HP and Agilent 34401A. For verification, I'm using an HP 3458A.

#hp #agilent #keysight #voltnut #3458a