HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 3/5  >  >>
szyhxc
User Rank
Iron
Re: Cool Runnings
szyhxc   11/5/2013 3:49:51 PM
NO RATINGS
Good to know!  THX!

William K.
User Rank
Platinum
Re: Cool Runnings
William K.   11/4/2013 8:40:59 PM
NO RATINGS
Actually I would only wish to cause some discomfort. Sort of a response delivering the message that they need to stop what they are doing. 

The logistics of using a mirror to return thier own dazzeling lights is quite complex and challenging.

Tool_maker
User Rank
Platinum
Re: Cool Runnings
Tool_maker   11/4/2013 12:34:42 PM
NO RATINGS
@William K: I hope you are speaking as to what you would like to do and not as you would do. I would think that in those circumstances the last thing you would want is two blind drivers.

Tool_maker
User Rank
Platinum
Re: Cool Runnings
Tool_maker   11/4/2013 12:34:03 PM
NO RATINGS
@William K: I hope you are speaking as to what you would like to do and not as you would do. I would think that in those circumstances the last thing you would want is two blind drivers.

akili
User Rank
Iron
Re: Cool Runnings
akili   11/4/2013 12:22:39 PM
NO RATINGS
And beware of trying to use the old-style triac dimmers to supply anything with a conventional transformer.  At some settings of the dimmer knob you'll probably get a substantial DC component and end up taking out the fuse at best or frying something at worst!

Rob Spiegel
User Rank
Blogger
Re: Cool Runnings
Rob Spiegel   11/3/2013 7:05:50 PM
NO RATINGS


Thanks for the info, Larry, I wonder if that kind of heat also creates a fire danger.

William K.
User Rank
Platinum
Re: Cool Runnings
William K.   11/1/2013 9:32:08 PM
NO RATINGS
I recently saw an ad for an LED landing light, and I think that it was rated for quite a few thousand hours, which certainly beats the 200 hours, or less, from a regular landing light. And if those lights only went for $200 I would rush out and buy a pair for my car. AT LAST, a way to deal with those jerks and the HID lamps that blind and dazzel. Let them know what real eye pain is. I am aware that the technical apologists claim that that dazzeling blinding beam is not bothering us, but I find otherwise.

Jim_E
User Rank
Platinum
LED lighting
Jim_E   11/1/2013 4:57:20 PM
NO RATINGS
We recently purchased a third-hand loft bed for my son.  It came with a mounted traditional incandescent desk light, equipped with one of those odd, long and tubular bulbs (burnt out). 

I went to eBay, and for under ten dollars shipped, bought a self-adhesive, warm-white LED light strip and 12V wall-wart.   It's quite nice and I was able to just stick the light up on the underneath of the loft where it's hidden from view but provides nice light onto the desk. 

This week my wife mentioned about wanted it dimmable, so I just ordered a small mini-dimmer and multi-mode controller for it from eBay for under two dollars shipped.  I have no idea how this stuff can be sold so cheaply and still work!

Larry M
User Rank
Platinum
Re: Cool Runnings
Larry M   11/1/2013 4:24:45 PM
NO RATINGS
You can make them work, but it's hard. There have been articles in the magazines (including yours, I think) on doing it. And it leaves a lot of vulnerable electronics to cook at the base of the lamp.

Base-up in a small enclosure open only at the bottom is the worst case--like the fixture on typical ceiling fans. I measured the temperature at the base of the lamp  with an IR thermometer after only 30 seconds of operation: it was already up to 155 degrees F. Temperatures that hot will quickly bake an electrolytic capacitor to failure.

Larry M
User Rank
Platinum
Re: Cool Runnings
Larry M   11/1/2013 4:21:10 PM
NO RATINGS
Well, yeah, the Cessna alternator is the same alternator used on the Ford Pinto at 20x the price. So I would expect the same for the lamps.

If I were still flying, I would be tempted to put an Experimental label on the aircraft and use the non-blessed parts.

<<  <  Page 3/5  >  >>


Partner Zone
Latest Analysis
From pitchers and forwards to quarterbacks and defensemen, we offer a peek at some of the more memorable engineers in sports history.
IBM announced it is dedicating $3 billion of funding over the next five years to research and development of new processor technologies.
A soundproofing invention called Acoustiblok recently won a television challenge to silence an air horn with only a fraction of an inch of polymer material.
Rethink Robotics has upgraded Baxter the Robot so it can be easily trained by co-workers who simply show the robot how to move.
Robots came into their own in the 1970s. Gone were the low-budget black-and-white B movies. Now robots roamed in full-color feature films with A-list actors.
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.
Jul 21 - 25, Design Products With Bluetooth Low Energy
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