Found in a 1965 Electronic Design, this high voltage circuit uses period transistors. Its purpose was to excite Nixie display tubes common at the time.
Found in a Radio Electronics from the 90s, this circuit generates a 1 kHz signal to serve as a...
This low noise circuit was obtained from a 1980s US RF publication. Transistors used are uncommon...
This circuit applies to other operational ones, other than the one indicated. The formulas next to the...