Figure 1 shows a way to control a light (or other 120-V ac appliance) with a passive-infrared (PIR) alarm sensor. The original concept was to turn a closet or shop light on whenever ...

Note that imparting the ambient light detection feature involves skillfully combining one photosensitive component and the motion detector electronics with a great deal of dexterity. First of all ...

This is a simple update to Mr. Hareendran’s PIR Sensor Security Light circuit. It has a shortcoming limits the relay voltage to approximately 3.3V. While this may function with some 5V relays, it will ...

This uses a PIR infrared sensor to enable motion sensing features, which is in line with several light bulbs in this genre. This bulb doesn’t have dimming functions, however.

Electromechanical PIR-Sensor Interface IC Controls Any AC Load Oct. 8, 2008 The LS6506R is a pyroelectric infrared (PIR) sensor interface IC that is designed to drive a latching relay.