Penta Laboratories, a manufacturer in Newbury Park, Calif., makes vacuum tubes for radio transmitters and other purposes.

Carburetors with vacuum lines are still found on classic vehicles and small-displacement engines — but what is the vacuum actually used for? Let's take a look.

Abstract: It has been a standard medical practice of diagnostic test laboratories as part of the legal process to archive every test sample for a specific period just in case the patients return for ...

If you work on simple digital projects, just about any bench supply will offer the voltage and current you’re looking for. However, if you’re working with valves, you’ll often find yourself needing ...

ABSTRACT: Protons and neutrons—though both sharing a “mushroom” vortex geometry in a superfluid vacuum—exhibit fundamentally different interactions with electrons and each other. In our Quark Vortex ...

Before transistors or microchips, the earliest computers relied on vacuum tubes — glass bulbs that glowed like small light bulbs and acted as electronic switches. Each tube could represent a one or ...

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 ...

Talking about vacuum tubes in 2025 might seem like talking about the role of buggy whips in today’s transportation world; but that’s not the case. There’s no denying that these devices—called vacuum ...

The film discusses the crucial role of vacuum tubes in radio broadcasting, detailing the various jobs involved in the industry, from production and scriptwriting to technical maintenance and ...

Linear, small-signal AC models can be useful in the analysis and design of vacuum-tube-based circuits. Under large-signal conditions, nonlinear models are typically required. Almost 120 years ago, ...

Priced from $10,000, the Feliks Audio Envy Meisterwerk headphone amplifier features all analog circuitry with 300B vacuum tubes. At its core, the Envy Meisterwerk incorporates Western Electric 300B ...