I've been reading this thread for a while, but I never saw the name
or model number of "the Hungarian one." Could someone please mention
it?
Thanx.--doug, WA2SAY
As
the first to mention it, I failed to give the link, as I was
using my mobile phone. But someone did previously post the link.
It
is not one of these devices that measures semiconductors. It is
designed really as an LCR meter, although it appears to function as
signal generator and frequency counter too, but those are not its main functions.
I've
spent quite a bit of time reading about LCR meters, in particular the
Keysight "Impedance Handbook" is worth a read if you want to know about
different technologies for measuring L, C or R. The most important thing
to note is that no component is ideal, so any attempt to quantify
something as having X Ohms, Y Farads or Z Henrys is not a good idea.
The Hungarian? unit can measure the phase, and I believe can convert it to a series or parallel model of the DUT.
The principle of how it works is not too different from my HP 4284A, although the HP is obviously going to be a more accurate meter. The basic uncertainty of that is 0.05%, and when calibrated by Keysight, is was well within that.
