Breaking News
Comments
Newest First | Oldest First | Threaded View
Clyde_rel
User Rank
Rookie
re: Electronics designed to endure the cold of space
Clyde_rel   3/26/2009 4:38:54 PM
NO RATINGS
How about electronics operating at 50 degK? The James Webb Space Telescope (JWST) will have electronics operating in taht regime.

Engineer62
User Rank
Rookie
re: Electronics designed to endure the cold of space
Engineer62   3/18/2009 3:50:57 PM
NO RATINGS
In terrestrial electronics we think "ambient temperature >> box temperature >> component temperature >> junction temperature" and must find cooling methods to keep the latter below some key figure for the device, such as 100 deg C (pick your own number!), all this in the face of heat generated in the device. In the cold space case, we have internal heat generation working in our favour. Of cousre, cold-start devices must start (or restart) at the low ambient of space (the -271 degrees C or -456 F stated) but once powered up there is the same rising temperature from ambient to junction. One might speculate that "-140 deg C" devices would work if they always remain powered. The need would now seem to be box insulation rather than cooling. But then there's the matter of facing the sun vs. deep in shadow...

Nick-e2v
User Rank
Rookie
re: Electronics designed to endure the cold of space
Nick-e2v   3/13/2009 9:47:09 AM
NO RATINGS
How can one get in contact with either prof. Alan Mantooth or someone else in the team who worked on this amplifier ?

Nick-e2v
User Rank
Rookie
re: Electronics designed to endure the cold of space
Nick-e2v   3/13/2009 9:44:10 AM
NO RATINGS
Congratulations to the team at Univ. of Arkansas. It is good to see silicon R&D for the Space industry. I am looking forward to see this type of amp working in the GHz range.



Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Engineer's Bookshelf
Caleb Kraft

The Martian: A Delightful Exploration of Math, Mars & Feces
Caleb Kraft
3 comments
To say that Andy Weir's The Martian is an exploration of math, Mars, and feces is a slight simplification. I doubt that the author would have any complaints, though.

The Engineering Life - Around the Web
Caleb Kraft

Surprise TOQ Teardown at EELive!
Caleb Kraft
Post a comment
This year, for EELive! I had a little surprise that I was quite eager to share. Qualcom had given us a TOQ smart watch in order to award someone a prize. We were given complete freedom to ...

Design Contests & Competitions
Caleb Kraft

Join The Balancing Act With April's Caption Contest
Caleb Kraft
47 comments
Sometimes it can feel like you're really performing in the big tent when presenting your hardware. This month's caption contest exemplifies this wonderfully.

Engineering Investigations
Caleb Kraft

Frankenstein's Fix: The Winners Announced!
Caleb Kraft
8 comments
The Frankenstein's Fix contest for the Tektronix Scope has finally officially come to an end. We had an incredibly amusing live chat earlier today to announce the winners. However, we ...

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)