We found this circuit in a magazine 73 for radio amateurs from the 80's. The circuit makes use of an epochal component which is programmed according to the table beside the diagram.
The oscillator shown generates a rectangular output signal at a frequency of 5 MHz, determined by the...
One of the first transistor amplifiers with transformerless output but using a 45-ohm speaker. This...
This circuit was found in the July 1991 issue of Radio Electronics magazine. It converts a binary...