Using a few diodes and a LED, you can make a nice indicator as shown in associated schematic diagram that can be used for a lot of applications (with a bit of luck). It’s quite suitable for use in ...

From International Rectifier, the IRS254x is a series of high-voltage, high-frequency buck regulator controllers for ac-dc offline, nonisolated applications requiring multiple LED circuits or ...

Working from 110 to 220-Vac power sources, the Acriche 4 ac LED has an efficacy (luminous efficiency) of 75 lm/W, surpassing competing dc LEDs. Further, the devices will cost 10% to 20% less than dc ...

Diodes Inc has created a family of two-pin constant current chips that can work at up to 400V. Intended to control strings of LEDs running direct from rectifier mains, and called AL5890, it is ...

Eltek Valere's X5000A4, a 100-A, high-efficiency ac-dc rectifier, extends the concept of universal input range to three-phase telecom power applications. Eltek Valere's X5000A4, a 100-A, ...