Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
rajuchaluva
User Rank
Author
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
Author
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

GREATTerry
User Rank
Author
re: Efficient method for interfacing TRIAC dimmers and LEDs
GREATTerry   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
Author
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
Author
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
Author
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
Author
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.



Radio
LATEST ARCHIVED BROADCAST
As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Like Us on Facebook
Special Video Section
The LTC®6363 is a low power, low noise, fully differential ...
Vincent Ching, applications engineer at Avago Technologies, ...
The LT®6375 is a unity-gain difference amplifier which ...
The LTC®4015 is a complete synchronous buck controller/ ...
10:35
The LTC®2983 measures a wide variety of temperature sensors ...
The LTC®3886 is a dual PolyPhase DC/DC synchronous ...
The LTC®2348-18 is an 18-bit, low noise 8-channel ...
The LT®3042 is a high performance low dropout linear ...
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...