Fancy Pants Homes on MSN

LED bulbs on old dimmer switches: Why they buzz or flicker and how to fix it

You swap a warm old incandescent for a shiny new LED, turn the dimmer down for dinner, and the room starts to hum or pulse. It's a familiar letdown, and it usually has nothing to do with a faulty bulb ...
EDN

Indoor LED light bulbs need more reliable circuit protection

Designers of early indoor LED light bulbs faced numerous technical hurdles, including AC-to-DC conversion, thermal heat-sinking, constraints imposed by current bulb sizes, electrical transients, and ...
EDN

Designing Circuit Protection for Indoor LED Light Bulbs

Since the earliest versions of indoor LED light bulbs were developed, their designers have faced a variety of technical challenges. These include AC-to-DC power conversion, thermal design/heat-sinking ...

10 V power supply and 1 kΩ resistor, what is the current flowing through the LED?

IntroductionIn a circuit that lights up an LED, it is standard to connect a resistor in series with the LED. So, if the power supply voltage is 10 V and the resistor is 1 kΩ, how many mA of current ...
Electronic Design

Engineering LED Drivers for Incandescent Bulb Replacement is a BOM Challenge

LED-based bulbs that replace their incandescent counterparts require a significant amount of engineering (Fig. 1). In the 60 W range the LED driver board can take up about 15% of the overall cost of ...