[volt-nuts] Some questions to zeners (thermoelectric effects)
phk at phk.freebsd.dk
Sun Jan 27 16:28:23 EST 2013
Content-Type: text/plain; charset=ISO-8859-1
In message <51058EAC.9000309 at bealecorner.com>, John Beale writes:
>So if you have perfectly balanced both the thermal mass and
>the thermal conductivity to ambient of every bimetallic junction in your
>circuit, there should be zero tempco of the system due to thermocouples,
>regardless of both absolute ambient temperature and the rate of temperature
>change with time.
This used to be very unrealistic for a host of reasons, all ultimately
terminating at the power dissipation of the various components heating
them to different degrees.
However, with todays low-power ADCs, things are starting to look
far more interesting, and given the size of the parts, submerging
the entire thing in a suitable liquid is also no longer out of the
But it's still a major challenge...
But isn't that why we're on this mailing list to begin with ?
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
More information about the volt-nuts