Simple DIY DVM Voltage Reference

[Terry]

For the benefit of those who have never heard of Jim Williams, here are few links:

http://www.linear.com/williams.php
http://www.computerhistory.org/atchm/an-...-williams/
http://www.edn.com/electronics-blogs/rea...ter-stroke

I remember reading an article about him which showed close-ups of one of his work benches - you've never seen one so untidy but he knew exactly where everything was. A pity I can't find a link to it now ...