T4D #12 - Electronic DC Load, DMM Reference, Fluke 8846A and Calibration Lab visit

--------------------- Click "Show more" ------------------------------- My website and forum:- http://www.mjlorton.com Donations and contributions:- http://www.mjlorton.com My techie channel MJLorton - Solar Power and Electronic Measurement Equipment - http://www.youtube.com/MJLorton My Techie Amazon Store: http://astore.amazon.com/m0711-20 My other channel VBlogMag - For almost any topic under the sun! - http://www.youtube.com/VBlogMag My VBlogMag Amazon Store: http://astore.amazon.com/vblogmag-20 ----------------------------------------------------------------------- In this video I cover the following: * The Fluke 8846A has arrived in South Africa thanks to Comtest (www.comtest.co.za). I have the opportunity of visiting the Eskom calibration lab with the Fluke 8846A to see if it is within specified calibration tolerance. * We take a look at the update to my multimeter reference check project. * I discuss the next project - an electronic DC "dummy" load based on Warwick's work: http://mjlorton.com/forum/index.php?topic=29.msg122;boardseen#new The basic circuit is from Dave Jones EEVBlog: EEVblog #102 - DIY Constant Current Dummy Load for Power Supply and Battery Testing https://www.youtube.com/watch?v=8xX2SVcItOA * I chat about getting stuck into some Arduino projects and tutorials soon. * I talk about a suggestion by one of my viewers (spikeguns1) about potting or encapsulating a circuit board to provide a better temperature coefficient. I may experiment with mineral oil in this regard as it is non-conductive.