Ultrasonic transmitter circuit 555

  
555 ultrasonic constructed transmitter circuit 3 feet from the oscillating pulse output of 555 T-40-16 40kHz drive to work, so that emit ultrasonic signals of 40kHz. Circuit vo
Ultrasonic transmitter circuit 555 - schematic

ltage of 9V, operating current 40 ~ 45mA, control distance is more than 8m.




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