Bell Labs made use of it for its coast to coast phone system and vacuum tubes soon found their way into everything from hearing aids to radios to televisions.

The VirtuPVT system, conceived for rooftop applications, includes an absorber plate, monocrystalline PERC solar cells, a borosilicate vacuum tube, an integrated reflector, and an integrated ...

Culminating a year-long project, [Usagi Electric] aka [David] has just wrapped up his single-bit vacuum tube computer ... blocks to build before the whole system is complete — Program Control ...

If transistors could replace vacuum tubes in the phone system, then they certainly could replace them in computers too. The army, with its need for ever-faster and more efficient calculations ...

Poland-based Feliks Audio specializes in high-end vacuum tube audio products including a line of rather unique headphone ...

Then there are chapters on photo-electric devices and various special tubes, while the final chapter of sixty pages gives a résumé of high-vacuum practice, based on material supplied by C.

Purists will be pleased to know that the equalizer can be totally bypassed if desired. The C2800 Vacuum Tube Preamplifier features methodically designed vacuum tube circuitry. Leveraging the ...

Hey there, curious travelers! After my last article about going number 2 on a plane, the number one question I got was, Where ...

Armand Maillet enjoyed traveling the United States in his Winnebago with his wife, and visiting their family. He loved ...

If you said yes to all of the above, then Astell & Kern’s flagship digital audio player — the SP3000T — is about to make your sonic dreams come true.  Analog stalwarts write love letters to the warm, ...

The GA-10 is an audiophile-grade headphone amplifier that features the SEPP (single-ended push-pull) circuit with eight vacuum tubes, a linear transformer, and direct tube output. The vacuum tubes ...

Read more: 10 Of The Most Reliable Mazda Engines Ever Built China's newest maglev system doesn't utilize an open track like ...