Global Sources
EE Times-India
Advanced Search
News
Products
Tech Articles
App Notes
 Forum  Blogs  White Papers  Webinars  eeUniversity
 Outlook 2010   VLSI Design Conference 2010   VLSI design conference pushes affordable tech
EE Times-India > Interface
 
 
Interface  

Diagnose LEDs by monitoring the switch-mode duty cycle

Posted: 05 Aug 2010  Print Version  Bookmark and Share Subscribe

Keywords: high brightness LED  switch mode  forward voltage 

[Summary of tips] A change in the forward voltage (VF) for a string of series-connected, high-brightness LEDs (HB LEDs) can indicate deterioration or complete failure of one or more of the LEDs. Accordingly, this circuit assesses the LED's health by monitoring VF.The VF of high-brightness LEDs (HB LEDs) is often monitored to assess the health of......
Please login or register with us to view this article>>
 

votes:   Add to Favorites
73S1215F, 73S1217F Windows XP 32 USB...
78Q8430 driver manual for ST 5100/OS...
Comment on "Diagnose LEDs by monitoring the swit..."
Comments:  
*  You can enter [0] more charecters.
*Verify code:
 
Win an iPad from EE Times-India!
The engineer who creates the biggest discussion on eeForums wins the iPad. State your opinion, ask a question; it's your choice—just keep your comments interesting. Oh, and yes, industry-specific please.
From there on in, your success is measured by every view and reply. The discussion that creates the biggest buzz by January 31 gets the prize.

Joining instructions:
(If you are already a member of EE Times-India, skip to step 3)
1. First, register as a member of EE Times-Asia at http://www.eetasia.com/register.do.
2. Verify your membership by clicking on the automated registration message sent to you.
3. Log-on to EE Times-India at http://www.eetasia.com/login.do.
4. Post a message on any of the categories at http://forum.eetindia.co.in

Point system: Each message view gets one (1) point while each valid reply gets four (4) points. In case of a tie, the editors will choose the winner based on a review of the message and replies.
Contest duration: December 21, 2010 to January 31, 2011.

Top Ranked Articles
High-quality Articles
Most Popular Articles
  • Nokia brings on two Windows phones
  • Sony takes over handset biz from Ericsson JV
  • ARM-based tablets continue to reign
  • Intel's struggles outside the PC domain
  • ARM scales to 64bit architecture
  • Imec, partners aim for organic PV tech
  • e-cars look to gain perfect sound experience
  • Researchers study graphene photodetectors
  • Wearable energy storage devices power garments
  • Smartphone app packed car infotainment booms
    • Search EE Times India
    Max's Cool Beans

    Clive Maxfield Strange modes of transport and other "stuff"

    Someone just pointed me at a YouTube video that claims to show the world's first e-powered multicopter flight...

     

    Go to top             Connect on Facebook      Follow us on Twitter      Follow us on Orkut