Breaking News
Comments
Newest First | Oldest First | Threaded View
rajuchaluva
User Rank
Rookie
re: Efficient method for interfacing TRIAC dimmers and LEDs
rajuchaluva   8/31/2011 5:41:27 AM
NO RATINGS
Nice information! Thanks.

Greggg
User Rank
Rookie
re: Efficient method for interfacing TRIAC dimmers and LEDs
Greggg   7/13/2011 5:02:33 PM
NO RATINGS
The problem with that line of thought is the size of the existing install base, and of course the reluctance of consumers to change to LEDs, let alone the existing dimming infrastructure. Cheers, Gregg LightBased Technologies

GREAT-Terry
User Rank
CEO
re: Efficient method for interfacing TRIAC dimmers and LEDs
GREAT-Terry   7/5/2011 4:30:08 PM
NO RATINGS
Interesting sampling scheme. Can this scheme support very low duty dimming? What is the limit of this scheme?

kendallcp
User Rank
Rookie
re: Efficient method for interfacing TRIAC dimmers and LEDs
kendallcp   7/3/2011 2:42:26 PM
NO RATINGS
Nice part, nice design trick, great article. I have a reservation about the whole thing, though, which is nothing to do with this device. It's that we really should try to wean ourselves off the triac-based phase cut dimmer. It's a noisy harmonic-spewing monster that turns a high power-factor load - whether it's a resistive filament or a carefully designed PFC'd LED lamp - into about the worst-PF load you could conceive of. And the utility companies have got to deliver all that harmonic current to you. All this alt.energy stuff like solar is only going to make things worse for the utilities. Inverters are regulated to have a pretty clean sinewave output and don't supply the harmonics. So the current the utility sees is only going to keep getting dirtier, unless we impose tough PF constraints on everything that connects to the grid.

Tadeusz
User Rank
Rookie
re: Efficient method for interfacing TRIAC dimmers and LEDs
Tadeusz   6/29/2011 8:24:03 PM
NO RATINGS
I find this article very interesting as it shows that apparently simple electronic schemes open an enormously area of problems and then of thinking and being creative. I will recommend it to my students as an excellent example of good engineering job. Paul

EREBUS0
User Rank
Rookie
re: Efficient method for interfacing TRIAC dimmers and LEDs
EREBUS0   6/29/2011 8:10:09 PM
NO RATINGS
I agree with Dr DSP, a very interesting perspective for those of us who are not fully intimate with the evolving LED technology. Thanks

DrFPGA
User Rank
Blogger
re: Efficient method for interfacing TRIAC dimmers and LEDs
DrFPGA   6/29/2011 4:17:54 AM
NO RATINGS
This is a great overview and helps explain PFC is a real world design. Good job.



EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
4 comments
An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely unfamiliar. ...

Max Maxfield

What's the Best Traveling Toolkit?
Max Maxfield
23 comments
A few years ago at a family Christmas party, I won a pocket knife as part of a "Dirty Santa" game. This little scamp was a Buck 730 X-Tract. In addition to an incredibly strong and sharp ...

Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
10 comments
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
42 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Top Comments of the Week
Flash Poll
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)