VISIBLE_LIGHT_RECEIVER

Published:2009/6/17 1:41:00 Author:May | From:SeekIC

This receiver for amplitude-modulated light signals uses phototransistor Q1 mounted in a para-bolic reflector (to increase range). Any npn phototransistor should work. Emitter-follower Q2 drives amplifier Q3. The output from Q3 feeds volume control R7 and audio amplifier UI. A 9- to 12-V supply is recommended for the receiver.



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