Boris L. Glebov

4 Questions 40 Answers 0 Followers

Questions related from Boris L. Glebov

Thermal conductivity across a compression joint?

I'm working on a design for a cryogenic system (liquid nitrogen temperature range). And I'm trying to estimate thermal conductivity across mechanical compression joints so I can make some design...

01 March 2018 774 9 View

Help with permeation coefficient units?

I'm trying to figure out how to calculate leak rate for various materials used for elastic vacuum seals (such as Viton) from permeation coefficient K. I'm basing this on values from a paper...

23 May 2017 8,300 2 View

What is the uncertainty of transmittance of an AR coating?

Thin-film optical anti-reflection coatings are often specified at about 0.1% - 1% transmission loss. For a wavelength-specific V-coating, 0.1% is probably a good estimate. But does anyone know...

08 June 2016 8,687 5 View

Why is the heat sink of LM79xx voltage regulators connected to the negative supply?

It seems that for the standard negative voltage regulators LM79xx, in the TO-220 package, the heat sink tab is connected to the unregulated negative supply instead of the ground. This presents a...

10 May 2016 462 5 View