Free Electronic Circuits & 8085 projects

Electronic projects with circuit diagram and 8085 microprocessor projects.

PIR sensor based light P228

Published on Jul 22 2010 // Pyroelectric Sensor circuits

Lighting control circuit using Pyroelectric infrared sensor

Figure shows the circuit which helps to control or arrange the lighting glow. P228 is an effective PIR sensor,which is an excellent performance human detector. When any person comes near the sensor, the sensor detects it and triggers the IC A,thereby triggering IC B and C also. It automatically makes the lamp EL to glow. This device can be used for security purpose, or for automatic lighting purpose in home.