This is the simple version of a white LED lamp that can be directly powered from mains. It can give ample light even for reading purpose. Capacitor Cx along with diodes D1 through D4 forms the AC step ...

It could easily power a 555 astable, a flashing LED, and a CD4518 counter driving eight LEDs. It should be noted that the reactance of C ac is normally much higher than that of the power recipient ...

Seoul Semiconductor, a leading global innovator of LED products and technology, announces a comprehensive series of AC LED modules that use the compan ...

ANSAN, South Korea--(BUSINESS WIRE)--Seoul Semiconductor, a global innovator of LED products and technology, has demonstrated a 277V AC lighting module using its NanoDriver Series LED driver that ...

I remember seeing a very simple night light type circuit with a few caps, diodes and LEDs. It was a bit more complicated than what you describe but it was a very simple circuit.<BR><BR>The ...

Fairchild introduced the new FL77944, a family of LED Direct AC Drives that manufacturers can use to easily scale power and create smart and scalable LED-based lighting.

The first implementations of AC-direct LED systems, however, gave their designers tricky design problems to solve, and severely limited their freedom to optimise operational features and the luminaire ...

The control circuit responds by increasing the PWM on-time to boost the output voltage higher in a failed attempt to increase the LED current. In most instances, the output voltage rapidly rises in an ...