In article , Trevor wrote:
On 10/06/2018 12:48 PM, Mike Rivers wrote:
On 6/9/2018 6:29 PM, Phil Allison wrote:
In the 1950s and 60s, the standard bench instrument for professional
techs and engineers was a VTVM like this one:
https://www.radiomuseum.org/r/rca_se...st_wv_98c.html
I have one of those on my workbench, and it still works.
The AVO meters were the most common in places I worked. Still have my
AVO model 8. If you don't fry them, no reason they won't outlast the user.
I hope I never, ever have to use a VTVM ever again. I spent more time
balancing and zeroing than taking measurements, it seemed. Modern
high-impedance DMMs make my life so much easier.
I do keep a Simpson 260 on my bench and I use it often. It lets you see
trends, count capacitor discharge curves, and so forth. The comparatively
low impedance means it won't get false measurements through leakage. But
it's just a coil of wire inside a magnet, there's no active electronics in
there.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."