40kHZ ultrasonic transmitter circuit diagram


Posted on Nov 10, 2015

40kHZ ultrasonic transmitter circuit of five, by the time base circuit LM555 and the external components 40kHZ multivibrator circuit, the resistance adjusting resistor RP can c


40kHZ ultrasonic transmitter circuit diagram
Click here to download the full size of the above Circuit.

hange the oscillation frequency. 3 feet from the LM555 output drives ultrasonic transducer T40-16, so as to emit ultrasonic signals. Circuit is simple and easy system. Circuit voltage of 9V, working current 40 ~ 50mA. Transmitting ultrasonic signals greater than 8m. LM555 NE555 direct replacement available, the effect is the same.




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