It looks great, and it’s the basis of an all-vacuum tube calculator ... giving [castvee] a real seven-segment display, a plus or minus sign, and an equals sign. It’s the beginnings of a ...

where exactly do you get a vacuum tube to play around with? [Fernando]’s solution was to rip apart the vacuum fluorescent display from an old radio (Google Translate) and use that as a triode.

Vacuum tubes are still used in specialized engineering applications such as high-power radio frequency transmitters, audio amplification, and in some display devices. Vacuum tubes act as insulted, ...

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 inside of the tube is connected to the vacuum system and the ... For more information, read Engineering 360's guide on How to Select Vacuum Sensors. Multi-line video display -- Video displays ...

At only $64.99 each, the Apos Ray 6SN7 Select vacuum tubes may deliver the dynamics and authentic sound you’ve been seeking. Few tubes have as storied a history as the 6SN7GT originally announced in ...

Finally* combat stubborn pet hair, dander and other allergens with top upright and stick vacuum picks from Dyson, Bissell, ...

Running time is fractionally longer than for the HF3, but thanks to a glitzy new digital battery display ... rise up the tube before gravity cancels out the power of the motor. A vacuum with ...

The display ... cordless vacuum cleaners were only any good on their top power mode. The best cordless vacuums included in this guide do a great job on standard, not boost, power. The weights quoted ...

The Dyson V12 Detect Slim has an easy-release dust cup, a HEPA filter and three modes — Eco, Auto and Boost — for different ...

A couple of old favourites today include Apple's excellent iPad 10.2 on sale for £299, smart TVs from just £229, and the ...

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.