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On Mon, 10 Jun 2024 00:29:17 -0000 (UTC), Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
JM <sunaecoNoSpam@gmail.com> wrote:On Sun, 9 Jun 2024 18:09:24 -0000 (UTC), Phil Hobbs>
<pcdhSpamMeSenseless@electrooptical.net> wrote:
>Jeroen Belleman <jeroen@nospam.please> wrote:>On 6/9/24 19:02, ehsjr wrote:>On 6/7/2024 9:14 PM, JM wrote:>A collection of monographs on high accuracy electronics written by Mr.>
Chris Daykin, following his career predominantly in metrology.
>
Unfortunately Chris will be unable to complete the unfinished
monographs (having started end of life care) but there is plenty of
interest to any analogue engineer.
>
https://1drv.ms/b/c/1af24d72a509cd48/EZhO_rP5-glDmxtc4ZHycvYBhrsqmyC5tuZjt2NFFsS0gQ?e=Wq2Yj0
>
Thanks!
Ed
I have an issue with his definition of resistor noise power
as the product of open-circuit noise voltage and short-circuit
current. That makes no sense.
>
There's more than that, probably, but that just jumped out at
me.
>
Jeroen Belleman
>
It?s four times too high, for a start.
>
Cheers
>
Phil Hobbs
"It is shown elsewhere [1] that the noise power is four times the heat
energy which would flow down the conductors
from a warm source resistor to a matching cold resistor."
>
Which, if true, would solve all our energy problems, except that
thermodynamic systems would all be unstable.
>
The thermal noise power produced by a resistor into a matched load is kT
per hertz.
Sure, which is what he states. By mentioning a hot and cold resistor he makes it clear that net energy flow is from hot to cold, and that the T refers to the hot source.But apparently he says that it's four times larger than that.
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