Although it sounds like some Star Trek McGuffin, a Q-Meter is a piece of test gear that measures the Q factor of a tuned circuit ... the unit even has an oddball acorn tube that you rarely ...

Here comes a new compact power amplifier that isn’t made in China: Pro-Ject Audio Systems’ Amp Box RS2 is made in Europe; it ...

Abstract: Because of a relationship which exists between the properties of a vacuum tube triode and those of a transistor, it is possible to start with a known vacuum tube circuit and to transform it ...

In addition, we analyze the amplification factor and corresponding dynamic noise, as well as derive the threshold of the amplification factor for the proposed scheme. Finally, simulation and numerical ...