This circuit was found in a 1993 Electronics Hobbyst Handbook. The circuit operates in the FM range. The coil has 4 turns of 24 or 26 wire in a coreless form 0.5 cm diameter.
This circuit controls the passage of the signal from an input to an output using a DC signal from a...
This audio level indication system for microphones was found in Radio Electronics from the 90s....
This 5-range current measurement circuit was found in the September 1989 issue of Radio...