[time-nuts] Thunderbolt? (re simple gpsdo.) >> capacitors

Poul-Henning Kamp phk at phk.freebsd.dk
Tue Jan 3 19:48:48 UTC 2012


In message <80B26DC756AA45DD84E4EB9E14B58998 at Warcon28Gz>, "WarrenS" writes:

>The leakage current noise I measured was way below insignificant when things 
>are properly scaled.

Really stupid question:  Couldn't the "double condensor" from voltage
references trick be used to eliminate the leakage entirely ?



    [Some op-amp] >-+------------+--> 
                    |            |
                    |          -----
                    |          -----
                    |   ____     |
                    +--|____|----+
                                 |
                               -----
                               -----
                                 |
                                 |
                                GND




-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
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Never attribute to malice what can adequately be explained by incompetence.




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