ULTRASONIC SOUND RECEIVER


Posted on Feb 7, 2014

You won`t be disappointed with the performance of this sensitive ultrasonic receiver. It can let you listen to bugs, bats, engines, and virtually any other source of ultrasonic sounds. This circuit uses a piezo tweeter as an ultrasonic microphone, amplifier stages Q1, Q2, and an LO using a 567IC. Q3 is a mixer that heterodynes the ultrasonic sounds down to..


ULTRASONIC SOUND RECEIVER
Click here to download the full size of the above Circuit.




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