Archive for July 2013

Using REF200 As 100uA Precision Reference

A few weeks ago, I discussed how to calibrate middle to low end DMMs using a precision voltage reference such as REF01. Of course, you can perform similar calibrations using a precision current reference as well. And in many cases using a precision current reference is a better choice as it can be used to generate voltage references as well using precision resistors. Continue reading ‘Using REF200 As 100uA Precision Reference’ »

VFD Clock – Putting Everything Together

After I completed the filament driver and the circuit to drive the multiplexed VFD segments, it is time to finish the VFD clock project I had in mind earlier. Continue reading ‘VFD Clock – Putting Everything Together’ »