ultrasonic transmitter circuit


Posted on Feb 6, 2014

The circuit uses a 555 timer IC configured as an astable multivibrator, i. e. , it generates a continuous signal of a set frequency as long as its reset pin (pin 4) is held high. Since the ultrasonic transducer used in this circuit is one designed to vibrate optimally at about 40 kHz, the resistor and capacitor values of the circuit were chosen such


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

that the 555 will output a signal whose frequency is about 40 kHz. This 555 output is amplified by Q1, which drives the ultrasonic transducer. The transducer then vibrates at 40 Khz, generating ultrasonic sound waves of that frequency. If paired with a matching ultrasonic receiver, such a simple transmitter can be used as a proximity sensor, such as one that can help a robot avoid running into walls. If used in that manner, the transmitter and receiver transducers must be positioned such that the receiver will only receive echoes of the transmitted signal and not the transmitted signal itself.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    10-W Class A Amplifier
    Biasing Op-Amps into Class A
    Digital Vacuum Gauge
    6.9 GigaHertz Chrono PC-based
    APM2.0 5V/Vcc Schematic
    Design on the basis of the mechanically controlled digital frequency meter of one piece
    mercury v8 monterey 1963 wiring diagram
    audio preamplifier
    Ultrasonic Dog Whistles
    FM Receiver Circuit
    Audio AD converter circuit configuration
    Class push-pull tube power amplifier circuit diagram 2A3A



    Top