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
Released on September 19, 2014, this 5.5 inch screen iPhone is the larger version of the iPhone 6, whose teardown follows tomorrow.
A Design News course on field programmable gate arrays (FPGAs) should help engineers who are considering the technology for their upcoming designs.
In many engineering workplaces, there’s a generational conflict between recent engineering graduates and older, more experienced engineers. However, a recent study published in the psychology journal Cognition suggests that both may have something to learn from another group: 4 year olds.
CTC releases EtherCAT Master module for high-performance control of networked servos, stepping motors, and I/O devices.
Conventional wisdom holds that MIT, Cal Tech, and Stanford are three of the country’s best undergraduate engineering schools. Unfortunately, when conventional wisdom visits the topic of best engineering schools, it too often leaves out some of the most distinguished programs that don’t happen to offer PhD-level degrees.
More:Blogs|News
Design News Webinar Series
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
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
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Sep 22 - 26, MCU Software Development – A Step-by-Step Guide (Using a Real Eval Board)
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