Here is one simple circuit of a general-purpose white LED security light with Passive Infrared (PIR) Motion sensing mechanism. At the heart of the circuit is a PIR sensor module SB0061. SB0061 is a ...

The open circuit protection circuit shown utilizes R9, causing it to serve an additional function, in conjunction with Zener diode D2. In normal operation, the LED current is set by the PWM controller ...

Inspired by printed circuit boards, the building block of all electronics, a Dutch designer has created an LED-based light installation ... With help from a sensor, the composition also "protects ...

In a direct attack on both the laser rangefinder market and the ultrasonic rangefinder market, LightWare Optoelectronics (Pty) Ltd, a South African based manufacturer of laser rangefinders, has begun ...