Indicated for calibrating digital instruments and circuits, this circuit was found in the June 1982 issue of Radio Electronics magazine. The circuit is based on components that are still available.
This microphone preamp found in a 1995 documentation offers stable microphone operation. The...
This high input impedance amplifier stage was found in a 1963 documentation. The transistor...
We found this oscillator in an English documentation from 1977. The symmetrical supply, in fact,...