HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Page 1/5  >  >>
magazines@dkoonce.com
User Rank
Iron
Circuit improvement suggestion
magazines@dkoonce.com   8/8/2012 4:16:15 PM
NO RATINGS
Replace the bipolar transistor with a MOSFET. Be sure the Rds is low. This should be less power loss than what you have and avoid the heatsink.

Rob Spiegel
User Rank
Blogger
Re: Amazing Co-incidence
Rob Spiegel   6/21/2012 5:03:00 PM
NO RATINGS
The link works fine, Foxzzy. Thanks much for the input.

John Duffy
User Rank
Gold
Re: Amazing Co-incidence
John Duffy   6/20/2012 8:52:24 PM
NO RATINGS
Interresting.  It's amazing how people can design such complex circuits that work.  Nice job!

foxzzy
User Rank
Iron
Re: Amazing Co-incidence
foxzzy   6/20/2012 8:08:48 PM
NO RATINGS
http://www.google.com/patents?vid=USPAT5611223&id=pgoiAAAAEBAJ&dq=Joseph+C.+Spitzer

You don't have to worry about infringiment - it has long expired, and it is in the public domain now....

Hopefuly that link will work, I cannot try it until I post this, and if it does not, I'll come up with some other way to get to it.......

John Duffy
User Rank
Gold
Re: Amazing Co-incidence
John Duffy   6/20/2012 7:31:07 PM
NO RATINGS
Foxzzy, I cannot seem to open the link properly.  I get an error page.  I'd like to see another design for ideas, and mostly to make sure I'm not infringing on it.   

John Duffy
User Rank
Gold
Re: Make magazine
John Duffy   6/20/2012 7:20:13 PM
Thanks!  I do appreciate the huge feedback I've recieved on this project. 

Frauenfelder
User Rank
Iron
Re: Make magazine
Frauenfelder   6/20/2012 4:18:05 PM
Thanks very much, Rob. I appreciate it very much. And like I said, all of us at Make are fans of DesignNews.

And my apologies to John! Your project and video are terrific. I like the way you took an existing project and improved upon it. Congratulations.  -- Mark

Rob Spiegel
User Rank
Blogger
Re: Make magazine
Rob Spiegel   6/20/2012 3:48:50 PM
Point well taken, Mark. John acknowledged you in the video, even showing your magazine. Good magazine.

Rob Spiegel
User Rank
Blogger
Re: Make magazine
Rob Spiegel   6/20/2012 3:46:28 PM
Good point, Zenock. The oversight was mine. As a former small magazine publisher, I should be more atuned to giving credit where credit is due. I could blame deadlines for numbing the brain, but really there is no excuse. I'll remember this going forward. 

In  the meantime, the comments give good credit.

Rob Spiegel
User Rank
Blogger
Re: transformer coupling
Rob Spiegel   6/20/2012 3:42:42 PM
The interesting thing about John's project is that it wasn't insprired by anything on the Internet, but rather by a print magazine, Make magazine to be exact.

Page 1/5  >  >>


Partner Zone
Latest Analysis
Take a look through these film and TV robots from 1990 through 1994.
The Soofa is an urban smart bench that provides mobile device charging as well as collects environmental information via wireless sensors.
Sciaky, provider of electron-beam additive manufacturing (EBAM) services, will start selling these machines commercially in September. The company has used its EBAM 3D printing technology for making very large, high-value, metal prototypes and production parts for aerospace and defense OEMs.
At this year’s Google I/O, the spotlight was pointed on gender inequality in the high-tech industry. Google has established a new initiative that it hopes will even out the playing field, Made w/Code. Part of this initiative will fund free online courses in basic coding.
Self-driving vehicle technology could grow rapidly over the next two decades, with nearly 95 million “autonomous-capable” cars being sold annually around the world by 2035, a new study predicts.
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.
Aug 4 - 8, Introduction to Linux Device Drivers
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: August 12 - 14
Sponsored by igus
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