Marked: "DAYRAD Tube Checker / Mfd. by the Radio Products Co., Dayton, Ohio. / Licensed Under Weston Patent 1704566 Type B". Includes leather carrying strap. Tube tester designed for A.C. plug in ...

Former Vice President Kamala Harris' memoir recapping her experiences on the 2024 campaign trail includes a handful of inaccuracies that opened the doors to questions about whether the former Democrat ...

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 ...

Using a vacuum and some plastic tubing, rescuers MacGyvered a device to rescue two baby hedgehogs who had tumbled down a storm drain. While the vacuum didn’t work, the tube did, and can perhaps become ...

Gas flames had been electrically conductive since about the middle of the nineteenth century, and early wireless researchers recognized that the existence of radio waves altered this conductivity. De ...

The thermionic tube has gone by many names throughout the timeline of its life. It’s also known as and referred to as a vacuum tube, vacuum diode, Fleming valve, and kenotron. Sir John Ambrose Fleming ...

A TUBE like a radiometer tube contained a concave metal disk within the bulb; this disk could be connected with the pole of an induction-coil, and about a quarter of an inch above it was a small wire ...

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 ...

Starting at $2,995, the Fezz Audio Equinox Vacuum Tube DAC is the most affordable D/A converter with Lampizator technology. The new Fezz Audio Equinox Vacuum Tube DAC ($2,995) is the only Lampizator ...