Figure 1 This circuit drives a string of LEDs with a constant current over the entire worldwide range of ac-mains voltages. ... 6 comments on “ An improved offline driver lights an LED string ” ...

Schematic of the LED Flood Lights Circuit. ... R2 reduces the inrush current. 20 LEDs are connected as a string to obtain luminance equal to 20W CFL. Enclose the circuit in a shock proof case. If a ...

Googling full wave rectifier led circuit should do the trick. You'll need a 200v+ unit, but your amperage should be minimal. ... but I'm ignorant to the ways of AC-powered LED light strings.

[youtube= Mad Scientist Labs brings us this easy to make LED blinking circuit. The idea is to put a LED in series with a small blinking incandescent bulb from a string of Christmas lights. The bulb… ...

Light-emitting diodes are often ... R14, Q11 and Q12. If there is a low drop in the LED string D1 + D2, the ... V1 will increase, and Q11 will latch on and disable the LED balancing circuit until ...

Typical uses today include backlighting for LCD TVs, projectors, computer displays, camera flashes, and vehicle brake lights. All need constant-current LED drivers that are economical and offer ...