Not too long ago, I saw an RF power amplifier that used a whole array of type 6146B vacuum tubes. The chassis held a whole lot of those tubes all running in parallel. We may be living in the age of ...

This one is a superior class AB push-pull configuration tube amplifier project delivering 80 Watt RMS per channel. Four 6550 high power tetrode vacuum tubes in triode mode and class AB2 push-pull ...

“Diode Modulation” is a simple means of creating an AM signal. The exciter creates the carrier. Audio is combined to create amplitude and sidebands and then sent to a half-wave rectifier. This signal ...

Fig 1. This basic source-follower circuit is the kind of amplifier you would find in an electric bass guitar amplifier. R6 provides the feedback. On the other hand, low-distortion applications require ...

A plastic 4-pin base with top contact, domed envelope. Stamped on base: "Raytheon"; on envelope: "32 / Made in U.S.A." Reference: https://www.radiomuseum.org/tubes ...