Archive for February 2014

HP 6113A Teardown And Calibration

A couple of weeks ago I did a teardown of HP 6181C — a precision DC current source made in the late 70’s and early 80’s. This time around, I am going to show some pictures of an HP 6113A precision DC power supply and do a basic calibration using my Keithley 196 multimeter. Continue reading ‘HP 6113A Teardown And Calibration’ »

Arduino Libraries Uploaded to GitHub

Over the years I have created quite a few libraries for Arduino. I finally uploaded them to GitHub a couple of days ago so that they are now all at one place and are easier to find. Continue reading ‘Arduino Libraries Uploaded to GitHub’ »

HP 6181C DC Current Source Teardown

HP 6181C is a lab grade 0 to 250 mA current source manufactured back in the late 70’s and early 80’s. There does not seem to be any pictures on the Internet for this particular model so I thought I would do a teardown here. Continue reading ‘HP 6181C DC Current Source Teardown’ »