For the transmitter, the ultrasonic transducer is simply tied to one of the digital pins on the Arduino. The receiver is a bit more complex, requiring a LM386 amplifier and LM393 comparator to ...

Conceptually the circuit there is simple, consisting of the ultrasonic receiver, followed by a transistor amplifier for the modulated wave, then a diode for demodulation, another transistor ...

and an ultrasonic emitter or transducer powered by an ultrasonic amplifier. The signal processor converts the sound, such as music or a voice, to a complex ultrasonic signal. The transducer then ...

The 20V digital input audio power amplifier offers 12.7mW of quiescent ... As well, the MAX98396 is ultrasound ready with 45kHz of bandwidth and a dedicated data path. This feature, combined ...

variable-gain amplifier, anti-aliasing filter, and 14-bit A/D converter with a 125 MSPS sample rate and 75 dB SNR performance. The AD9675 from Analog Devices is an 8-channel Ultrasound analog ...

is handled by the driver transistor to fire the ultrasonic sensor through the ultrasonic transformer, and the received/echo pulse is processed by a small signal amplifier (centered on the dual ...

Figure 4: The ear is responsible for ultrasound sensitivity in A ... and a precision measuring amplifier (Brüel and Kjaer 2610). Frog movements were monitored visually under dim light, and ...