[sdiy] Resistor War !!!
Grant Richter
grichter at asapnet.net
Wed Feb 21 03:09:48 CET 2001
Thank you for the enlightening replies. This list is simply the best for
asking stupid questions!
> Carbon comp 0.1-3.0uV
> Carbon film 0.05-0.3uV
> Metal film 0.02-0.2uV
> Wire-wound 0.01-0.2uV
>
Last place I had an $800 HP AC voltmeter that just measured AC volts RMS.
It also had a decibel range with switchable reference impedance. At least
according to this beast, a shorted input produced -59 db for a 600 ohm
reference. When switched back to AC it showed 2.2 uV RMS.
The moral of the story is (I guess) that it is tough to get below -60 db,
even for an $800 purpose designed voltmeter.
But OK let us not start bathing everything in liquid nitrogen - first one to
do so gets thrown off the list!
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