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More  Light Detectors

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

Circuit 40KHZ Modulated Laser Light Detector Circuit designed by David Johnson, P.E.

More  Light Detectors

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