Published with a power amplifier in the January 1985 issue of Radio Electronics, this circuit indicates overexcitation by a strong signal that causes distortion.
Found in a 1960 Sylvania manual, this circuit can be implemented with a modern equivalent...
This configuration, already presented in other points of this section and website, is of a...
We found this precise crystal oscillator for the 144 MHz band, depending on the crystal used. The...