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Circuits
designed by David Johnson, P.E.
Last Updated on:
Monday, December 25, 2017 03:47 AM
Master Category List - Dave's Circuits
Text & Graphics Copyright ©
David A. Johnson, P. E. -- ALL Rights Reserved.
LINKING to Dave's circuits is permitted but DO NOT COPY to your WEB SITE server! |
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More
Freespace
Communication Circuits
Transimpedance Amplifiers |
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Air Transparency
Monitor, Xenon Flash Receiver
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| 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. |
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Click
on Drawing Below to view PDF version of Schematic |
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