[time-nuts] High accuracy temp controller ckt
Poul-Henning Kamp
phk at phk.freebsd.dk
Fri Jul 12 12:02:47 UTC 2019
--------
In message <CANX10hBua_yuFWrWTeDyhDLp_TNxoCvZvomjaynCEbk1W_=ahA at mail.gmail.com>
, "Dr. David Kirkby" writes:
>I partially read the paper mentioned. I note that the authors used a thermo
>electric cooler (TEC) as they wanted get low temperatures.
Cooling GigaOhm resistors makes sense, Johnson/Nyquist noise is
proportional to the product of absolute temperature and resistance.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
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