DOPPLER_ULTRASOUND_RECEIVER

Published:2009/6/19 4:13:00 Author:May | From:SeekIC

XTAL1 drives amplifjer Q3/Q4, which is tuned to 2.25 MHz. The detected signal is fed to audio amp!ifier IC1. A 9-V supply is used. The circuit operates at 2.25 MHz and is designed to be used with an ultrasonic sound transmitter at this frequency.



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