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very low-leakage capacitor

Discussion in 'Electronic Design' started by Winfield Hill, Aug 27, 2003.

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  1. Robert Baer wrote...
    Yes, of course. In my sophomore year of physics I spent several
    months carefully replicating it with "modern" digital equipment.
    It was an amazing experiment with spectacular capability, able to
    measure a single electron with reasonable resolution. But that
    doesn't mean we can do the same thing using q = CV with Xicor's
    voltage reference. They'll be using a high capacitance to obtain
    low noise and good long-term stability. If their capacitance is
    say 20pF, adding or removing one electron changes the DC voltage
    by 8nV, far below the noise and drift of their output amplifier.

    Thanks,
    - Win
     
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