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What is Pyroelectric Fire Alarm Circuit Design about?

This document describes a pyroelectric fire alarm circuit that uses a piezoelectric sensor to detect changes in temperature caused by a fire. The sensor circuit amplifies small voltage signals from the piezo element caused by temperature increases. If the temperature rises more than 10 degrees C, the circuit triggers an alarm that first flashes a red LED, then sounds a beeping alarm after one minute, and finally activates a relay to spray fire extinguishing foam or water after four minutes. The power supply

Author

Uma Shankar

Language

EN