ALMANAC: Vacuum tubes 01:21. ... Today, of course, transistor, chips and wafer-thin flat-screens have largely replaced old-fashioned tubes, but the vacuum tube still glows warmly in many a memory.

Before the invention of transistors, vacuum tubes ruled the world. The only way to get amplification or switching (or any electrical control of current) back then was to use tubes. But some tube de… ...

The executive was a collector of old vacuum tubes that once powered radio and TV sets, and he was […] Skip to content. All Sections. Subscribe Now. 49°F. Friday, May 2nd 2025 ...

But there could be a solution, and it involves—of all things—good old vacuum tubes. We’re struggling to meet Moore’s Law because we can’t make transistors small enough; ...

X-ray tubes need much over 30kV in a good vacuum, and in this video the tube was not even given 300 volt. Only normal vacuum tubes that could withstand enough voltage and have good enough vacuum ...

In addition to the rare 300B, there exist a great number of tube types. Electric-guitar amps, for example, routinely use vacuum tubes because their warm, engaging sonic signature can’t be ...