Figure 1 Schematic diagram of an existing ultrasonic filter (top) and a topological ultrasonic circuit (bottom) Note. Existing ultrasonic filters have a single filter function per device. On the other ...

In a recent development, NTT Corporation unveiled the “first” gigahertz ultrasonic circuit that utilizes topological insulator principles, indicating a new era in ultrasonic communication technology.

This dog repellent ultrasonic circuit will chase away angry dogs. It comprises of a 555 timer IC, a speaker/piezoelectric and a little ferrite transformer. The main part of this circuit is a 555 timer ...

This circuit generates inaudible ultrasound to make a barrier across the entry. At the moment the circuit detects a break in the sound barrier, it generates a loud alarm indicating the entry of a ...

Using ultrasonic technology, this 3D printer offers a gentle, non-contact method to manipulate material particles and sensitive components into full electronic circuits. Ultrasonic research ...

The equivalent circuit modeling of sensor can simplify the sensing problem as a pure electronics problem. As one kind of widely used sensor, there are also numerous equivalent circuit models for the ...

Qualcomm’s second-generation ultrasonic fingerprint reader — the 3D Sonic Max —is 17 times larger than the original, in an attempt to solve the first-gen model’s issues.