PREAMP_FOR_INFRARED_MINE_DETECTOR

Published:2009/7/16 3:27:00 Author:Jessie | From:SeekIC

Lead telluride cell cooled with dry ice, with infrared input chopped at 200 cps by fan motor, feeds three-transistor preamp that provides output at 200 ohms to remote R-C tuned main 200-cps amplifier.-W. E. Osborne, Infrared Mine Detector a Reality, Electronics, 36:31, p 54-58.



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