Several techniques exist, but [Wolfgang] over at the Electronic Projects for Fun blog decided to go for the classic method of using a vacuum diode. He describes the design and analysis of a noise ...

That's when a British scientist named John A. Fleming made a vacuum tube known today as a diode. Then the diode was known as a "valve," because it forced current in the tube to travel exclusively ...

robot vacuum cleaners, automated guided vehicles, and service robots. Of the potential market, Rohm states, “Lidar adoption has increased across various automation-focused applications, driving demand ...

"I have been receiving signals on an aerial with nothing but a mirror galvanometer and my device." The device was the original thermionic vacuum diode ...