There have been many different ideas presented for increasing the acoustic output of a piezo buzzer or ultrasonic transducer. Most of them involve rather complicated circuitry that drives up the total ...

Chop the noise gain to measure an op amp’s real-time offset voltage introduces a new type of chopping. “Chopping the noise gain” is a simple way to measure the offset voltage in real time, so that you ...

The creative new approach could lead to more energy-efficient machine-learning hardware. On a table in his lab at the University of Pennsylvania, physicist Sam Dillavou has connected an array of ...