A voltage multiplier is applied as a high source impedance, 36V, 300mA, 12W LED driver. The high source impedance is ideal for driving power LEDs because it accommodates variations in LED junction ...

IRS29831-based LED driver circuits offer smooth, flicker-free dimming with triac-based dimmers. The control IC can be used for LED driver applications up to 25 W and operates directly from a DC input ...

Therefore, each LED driver will be a 350 mA current source designed to work from an input of 45V to 51V over a range of output voltage from 30V to 40V, reflecting the potential variation of the VF of ...

This is a simple LED driver circuit using two 555s and a pair of NPN/PNP transistors to drive several LEDs meant to outline a small sign. Designed with my son for a St Patrick's Day project, in KiCAD.

LED DRIVER CIRCUITS The design in Figure 3 represents a constant current chopper driver that provides a dc current with 10% ripple to an LED string used to edge light an LCD.

Many equipment manufacturers prefer protection circuits combining resettable overcurrent protection devices with upstream fail-safe protection. In this example, R1 represents a ballast resistor used ...

LED with constant output current and power factor correction are presented in this paper, the non-isolated Buck converters are used for the LED drivers, according to different operating mode of ...

KYOCERA TFT-LCD product line includes three new device including a 7.0” WVGA and two 8.4” SVGA TFT-LCD displays. All units provide super wide viewing (SWV) technology and two of them are super high ...