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.
The Colpitts oscillator is a time-tested design — from 1918. [The Offset Volt] has a few videos covering the design of these circuits including an op-amp and a transistor version. You can find the ...
The two persons above are the geniuses who gave us two classic oscillator circuits as shown in Figure 1. Figure 1 The two classic oscillators circuits: Colpitts (left) and Clapp (right). However, a ...
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