Free Electronic Circuits & 8085 projects

Electronic projects with circuit diagram and 8085 microprocessor projects.

Smoke sensor with a metal plate for fire alarm

Published on Apr 11 2011 // Gas sensor circuits

Smoke sensor with a metal plate for fire alarm.

Circuit as shown. It consists of smoke sensing element, on / off electronic switch, analog voice circuits, and AC step-down rectifier circuit. Simple smoke sensor can be used as a fire alarm.