In a defence tech laboratory in Beijing, a research team powers up a vacuum tube about the size of a pistol. Inside, a stream of electrons surges through thin coiled wires, amplifying microwave pulses ...

The SELECT 12AU7 joins the Ray Tubes SELECT Collection lineup. Vacuum tube company expands line-up with new-production 12AU7 tubes in both its CORE and SELECT Collections Audiophiles sometimes ...

OAKLAND, CA, UNITED STATES, July 9, 2025 /EINPresswire.com/ -- Ray Tubes is pleased to announce that its new-production vacuum tubes are now available through its ...

The video explains the operation of the vacuum tube, specifically the triode, which is essential in modern communication devices like radios and telephones. It describes how a tungsten filament emits ...

Given appropriate models for vacuum tubes, circuit simulators such as SPICE make analysis based on such nonlinear models a tractable effort. The Langmuir, Leach, and Koren models are discussed for the ...