Found on an 80's Elektor, this circuit uses common components, being the diode a general purpose germanium. The coils select the frequency range of the indicator that reaches 60 MHz.
This circuit interfaces audio signals with 50-ohm lines. The source must be symmetrical and the...
This circuit is from an American cookbook from 1977. The circuit generates a voltage of...
This is the basic configuration of a function generator with the 8038 integrated circuit (uncommon...