Simple Earthquake Alarm Circuit Diagram. Friends in this video i will show you how to make an earthquake alarm earthquake detector circuit simple science project friends it is a very simple scien. S1 and s2 are the two switches that are used in the circuit so that both can be put in two different places i e.
The earthquake detector is built around a programmable timer chip that can be reset while. So it is an ideal device to monitor entry passages. Earthquakes are sudden and cannot be predicted when where and how harmful it could occur so here is an instructable for how to make an earthquake alarm which could be very helpful especially at the time when people are sleeping this earthquake a.
Nand gate 3 and 4 is used as audio oscillator.
S1 and s2 are the two switches that are used in the circuit so that both can be put in two different places i e. Here is an ultra sensitive earthquake detector circuit that can sense seismic vibrations. The alarm circuit is built around dual input 4 nand ic cd4011 and a npn transistor. The circuit exploits the direct piezo electric property of the piezo element used in buzzers.
