On Fri, 18 Jan 2013 20:37:05 -0800, you wrote:
Data logging devices are commonplace now days. Many high-end multimeters have such a feature where you can plug the meter up to a power source and record levels over time.
But I'm interested in recording out-of-bounds events such as spikes and sags in mains supply.
This type of measurement is typically only found in power systems analyzers which are quite "$pendy".
Anybody know of an event logger that is affordable?
Why not make one?
Take anyone's microprocessor board (Arduino would work well), feed it
with AC, biased to half the supply voltage, then do a fast A/D on it.
This gives you a running peak to peak voltage reading that you can
examine for sags, excursions and the like.
You can get either an RS-232 interface or USB as you wish.
Harvey
THanks,
Dave
