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Dave's Circuits
Circuits designed by David Johnson, P.E.

Master Category List - Dave's Circuits
Last Updated on: Monday, April 21, 2008 04:18 AM


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

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

Light Detectors
Master Schematic Category List - David A. Johnson, P.E.
 

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