Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
EE Times-Asia > Advanced Search > LED driver

LED driver What is an LED driver? Search results

?
?
What is an LED driver?
Regardless of type, size, or power, all LEDs work best when driven with a constant current source since LED color changes with small variations in driving current. LEDs often support varying system voltages and forward voltages, which can cause variations in LED brightness and color.
An LED driver is a self-contained power supply that has outputs matched to the electrical characteristics of your LED or array of LEDs. There are currently no industry standards (as of 2009), so understanding the electrical characteristics of your LED or array is critical in selecting or designing a driver circuit. Drivers should be current-regulated (deliver a consistent current over a range of load voltages). Drivers may also offer dimming by means of pulse width modulation (PWM) circuits. Drivers may have more than one channel for separate control of different LEDs or arrays.
total search906 articles
2010-08-13 6612_OMU_S2+2_URT_V1_14 firmware description document
This application note describes the firmware 6612_OMU_S2+2_URT_V1_14, which can be used with the Teridian 78M6612 power and energy measurement IC.
2006-07-13 3G in China taking longer than expected
3G development in China is taking longer than expected, and pundits are exasperated. Its commercialization will depend on the readiness of TD-SCDMA, which is considered the underdog standard. Will it take three generations for 3G to happen?
2012-03-15 3D LCD TV panel shipments gain momentum
Panel makers are targeting very strong growth of 138 percent for 2012, which amounts to shipments of around 50 million units and penetrating 21.6 percent of the overall LCD TV panel shipments.
2006-09-27 3.5-inch TFT-LCD targets consumer, industrial handhelds
One Stop Displays has expanded its line of active matrix TFT-LCDs for handheld consumer and industrial applications with the addition of a low-cost 3.5-inch transflective TFT module.
2009-01-22 2009: year of green FPD implementation
DisplaySearch reports that 20 percent of flat-panel display (FPD) shipments in 2008 had green features, making it the year of green FPD development, and dubs 2009 as the year of green implementation.
2009-02-20 2008: downturn, changes for telco broadband
The telco broadband market experienced a significant downturn in new subscriber additions during 2008, according to iSuppli Corp.
Bloggers Say

Bloggers Say

See what engineers like you are posting on our pages.

?
?
Back to Top