Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
1–10 of 110 posts
Re: Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
#2The article, actually a single Q&A, is dated Sep 2007.
Re: Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
#3The last line got a good chuckle out of me!
Re: Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
#4The article, actually a single Q&A, is dated Sep 2007.
To the best of my knowledge time-independent articles don't need a date stamp. I never see one on Wikipedia articles even if the last edit was years ago.
Re: Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
#5Yet another unexpected sighting of Boltzmann's tomb.
Re: Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
#6They have a cool PDF cheat-sheet related to this which doesn't seem to be linked from the page.
https://www.analog.com/media/en/selection-guides/Equation_Pu...
Re: Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
#7The last line got a good chuckle out of me!
It is now partially incorrect, too. Now we can no longer change Boltzmann's constant not because he's dead (indeed, until recently, it was a measurable quantity), but because k_B is now defined as a part of the redefinition of the SI unit system in 2018.
The value is 1.380649×10^{−23} J/K, exactly.
Re: Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
#8The article, actually a single Q&A, is dated Sep 2007.
To the best of my knowledge time-independent articles don't need a date stamp. I never see one on Wikipedia articles even if the last edit was years ago.
I am old enough to remember when naked Wikipedia articles were discouraged (or maybe even disallowed) on HN.
Re: Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
#9Fun fact: for the most demanding RF applications, namely, radio astronomy, the front-end low-noise amplifiers are indeed cooled to cryogenic temperature by liquid nitrogen. Here's how it's done at NASA for the Deep Space Network [0]. It's a long paper, see Chapter 4 Cryogenic Refrigeration Systems, PDF page 179 (text page 159). Also, nice photos in page 183 and 188.
[0] https://descanso.jpl.nasa.gov/monograph/series10/Reid_DESCAN...
Re: Resistor Noise Can Be Deafening, and Hard to Reduce (2007)
#10[deleted]