HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
RyanJohnn
User Rank
Iron
Helpful
RyanJohnn   5/17/2013 7:36:48 AM
NO RATINGS
It would definitely helpful and giveing great illustration.thanks

Cabling systems Virginia Cable removal Service

tekochip
User Rank
Platinum
Re: Excellent!
tekochip   4/19/2013 9:23:44 AM
NO RATINGS
I agree, you're a well-rounded engineer capable of solving problems with simple solutions even when they are outside of your discipline. I wish you worked for me, of course, we don't allow smoking in our building.


adamsmith11
User Rank
Iron
Excellent!
adamsmith11   4/19/2013 3:32:24 AM
NO RATINGS
excellent approach. will help in making own.thanks

phone repair richmond va

OhmsLaw
User Rank
Gold
Re: The Case of the Way-Too-Hot Power Supply Unit
OhmsLaw   9/7/2011 11:48:41 PM
If you can give me a rating. TY

Anthony Stewart

EE since 1975.

Greg Stirling
User Rank
Platinum
The Case of the Way-Too-Hot Power Supply Unit
Greg Stirling   9/7/2011 5:46:57 PM
NO RATINGS
Excellent work Rob.  Delivering 1000 units a month sounds challenging enough. This thermal problem benefitted from the application of aerodynamics.  And a clever cost effective design to follow.  Seems as though being multi-disciplinary is an asset to many machine designs...

William K.
User Rank
Platinum
Power supply cooling: the turbulent solution
William K.   9/7/2011 4:01:41 PM
Brilliant engineering indeed! The problem with laminar flow cooling is that there is always a sttagnation zone covering all the fixed surfaces, and the velocity gradient rising as you move away from those surfaces. Finding the cost-effective means of getting turbulent flow was the engineering end of the solution. Good job indeed.

OhmsLaw
User Rank
Gold
Re: Great Project
OhmsLaw   9/7/2011 4:00:10 PM
I took some photo's of the only unit I had.. My original Prototype which was prior to the design completion of the said thermal solution and Origami cables.  I hope this illustrates the point.

Basically I prevented the air from flowing over top the PSU which had a 1/4" gap or so by blocking that with a plastic cover and created more turbulence with a front opening that also increased the linear air velocity which significantly reduces hot spot temperature rise inside the power supply (PSU). In this case form Lambda.   THis prototype was built 4 weeks after a paper napkin design spec and was later finished 3 weeks later and hand delivered to AVAYA in Denver.

http://db.tt/YASRI5s  (< PDF with images )

dan
User Rank
Iron
Great Project
dan   9/7/2011 12:05:13 PM
NO RATINGS
Well explained and engineered solution.  Just as a suggestion pictures of your project will make it more interesting

Alexander Wolfe
User Rank
Blogger
Well done
Alexander Wolfe   9/6/2011 3:17:32 PM
NO RATINGS
A well described and thought out solution. Sorta like the inverse of putting winglets on the edge of modern jetliners.



Partner Zone
Latest Analysis
A Silicon Valley company has made the biggest splash yet in the high-performance end of the electric car market, announcing an EV that zips from 0 to 60 mph in 3.4 seconds and costs $529,000.
The biggest robot swarm to date is made of 1,000 Kilobots, which can follow simple rules to autonomously assemble into predetermined shapes. Hardware and software are open-source.
The Smart Emergency Response System capitalizes on the latest advancements in cyber-physical systems to connect autonomous aircraft and ground vehicles, rescue dogs, robots, and a high-performance computing mission control center into a realistic vision.
Tolomatic ERD actuator provides high-tolerance, high-force capabilities at a low cost to innovative medical therapy machine.
The diesel engine, long popular on European roads, is now piquing the interest of American automakers.
More:Blogs|News
Design News Webinar Series
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 11:00 a.m. California / 2:00 p.m. New York
5/13/2014 10:00 a.m. California / 1:00 p.m. New York / 6:00 p.m. London
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Sep 8 - 12, Get Ready for the New Internet: IPv6
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: September 30 - October 2
Sponsored by Altera
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service