dozen small cmos alarm circuits


Posted on Feb 7, 2014

This is a selection of small self-contained alarm circuits. They have a very low standby current; and are suitable for battery operation. Some are triggered by normally-open and normally-closed switches. Some react to changes in light or temperature. The result is a variety of output times and patterns..


dozen small cmos alarm circuits
Click here to download the full size of the above Circuit.




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