[time-nuts] I think I've become a Volt nut too.
Dr. Frank Stellmach
drfrank.stellmach at freenet.de
Tue Jan 12 19:49:47 UTC 2010
> Hi All,
>
> I have been a time nut for some time now. I think I've become a Volt nut
> too! I build the Silicon Chip magazine Voltage reference late last year but
> didn't have anything to compare it against so I bought a Fluke 732A DC
> reference standard.
> I there a group I can subscribe to that can help me with this?
> Can I coin the phrase; A man that has one DC Voltage standard knows how
> accurate his meter is, whereas a man with two standards is not quite sure!
> Regards,
> Nic
> VK2KXN VK5ZAT
Hi Nic,
please goto febo.com/pipermail/volt-nuts; John Ackermann opened a parallel mailing list to time-nuts to have a distinct discussion platform.
I'm interested also, what kind of reference is used in the Silicon Chip magazine..is it LTZ1000 based?
A single volt-reference would be sufficient, if it is calibrated peridiocally, i.e. if its drift rate is determined during at least 5 calibrations or so.
In this case, a certainty of around 1ppm would be achievable.
A 2nd reference would be better for keeping a working standard at home while the other is out for calibration.
And an ensemble of 4 is good for averaging the VOLT below 1 ppm.
Frank
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