Circuit: 40KHz LASER BURST DETECTOR__ Circuit designed by David A. Johnson, P.E.

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Last Updated on: Saturday, December 23, 2017 03:21 PM

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40KHz LASER BURST DETECTOR

This circuit was originally designed to detect weak flashed of laser light bounced off of a fabric video projection screen. It was used as part of a firearm training system. It generates a 100mS output pulse whenever it detects a 3ms to 5ms laser burst, modulated at 40KHz. It is very sensitive and could be modified for long range laser communications.

Click on Drawing Below to view PDF version of Schematic