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 ...

Inside [Klaus]’ device is an Arduino Uno, an HC-SR04 ultrasonic distance sensor ... The board doesn’t have an amplifier or speaker, but with the addition of a small amplifier, [Klaus ...

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 ...

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 ...

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 ...

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 ...