11 Jun
2009
11 Jun
'09
10:18 p.m.
Dave McGuire wrote:
On Jun 9, 2009, at 6:37 PM, Brent Hilpert wrote:
I'm a NIST certified calibration technician. The amount of dorking
around that is done to get around the effects of metal junctions,
including all solder joints, and the effects of temperature and
humidity, is amazing. Getting great accuracy is surprisingly difficult.
Warren
Search for "dielectric absorption", or
look up "permittivity" in
Wikipedia to
get an idea of just how complex capacitors are (!)
Yes, I'm aware of their complexity...From my childhood days I
thought they were simple, but in recent years I've studied them pretty
closely. I've been dabbling in metrology for a few years now and have
become amazed at the complexity behind the "simple" things that are
the underpinnings of all things electronic. It's fascinating. Anyone
interested in electronics would do well to investigate this a bit.