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Last Updated on: Tuesday, June 01, 2021 03:06 PM

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Air Transparency Monitor, Xenon Flash Receiver

I designed this circuit many years ago to monitor the quality of a mile long column of air for future optical communications experiments. The transmitter system (circuit 72 below) uses a powerful xenon flash in conjunction with a large 12 inch fresnel lens at the transmitter end and a matching 12 inch lens with a PIN photo diode at the receiver. The receiver system was connected to a weather station and a computer to collect the changes in intensity of the light flashes under different weather conditions. It has the potential for a 30+ mile range. I have also used this system to conduct cloud bounce experiments.

Click on Circuit Below to view PDF of Schematic

Air Transparency Monitor , Circuit designed by David A. Johnson, P.E.

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Transimpedance Amplifiers

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