A Planet Analog article, “2N3904: Why use a 60-year-old transistor?” by Bill Schweber, inspired some interest in this old transistor and how it’s commonly used, and if any uncommon uses might exist.

[Paulo] just tipped us about an Excel based high frequency transistor amplifier calculator he made. We’re guessing that some of our readers already are familiar with these class A amplifiers, commonly ...

Two tuners were developed for this receiver. The more sensitive one uses tetrode transistors in the RF amplifier, mixer and oscillator. Its disadvantages lie in a much higher cost and a 12 to 14 db ...

Abstract: In this article, we present a novel equivalent circuit model for a dual-band unified absorptive common-mode filter (A-CMF). While existing single-band A-CMFs effectively address ...

Abstract: In this work, we introduce a new collector IGBT structure that shows a huge improvement of the short-circuit (SC) ruggedness without deteriorating the static and dynamic losses of the device ...

It works in Node.js and the browser (using a bundler). Emitting events asynchronously is important for production code where you want the least amount of synchronous operations. Since JavaScript is ...

Have you ever wondered how speed guns measure the speed of moving vehicles or how an athlete's sprint speed is recorded? Normally these speed sensors work with radar or laser technology to bounce back ...