Circuit - XENON LAMP FLASH DETECTOR - Circuits designed by David A. Johnson, P.E.


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Circuits designed by David Johnson, P.E.

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Last Updated on: Friday, August 29, 2008 02:35 PM

Comparator Circuits Light Detectors or Optical Sensors

XENON LAMP FLASH DETECTOR
This circuit uses a small 2.5mm square photo diode in conjunction with a 100mH coil to detect the short light flashes from a xenon lamp. The coil makes the circuit immune to normal room lights. Its 10mv sensitivity can detect light flashes from a range of over 100 feet. Reflections from a room’s walls and ceiling is usually enough to trigger the circuit. The entire circuit draws only 3 Microamps from a 6 to 9 volt battery.

Click on Drawing Below to view PDF version of Schematic

Comparator Circuits Light Detectors or Optical Sensors
Master Schematic Category List - David A. Johnson, P.E.