This PLL circuit was found in the April 1978 issue of Radio Electronics magazine. The circuit is powered with up to 15 V voltages from a symmetrical source.
This alarm circuit was found in April 1975 Radio Electronics magazine. The circuit uses a 12 V...
This circuit was found in the July 1991 issue of Radio Electronics magazine. It converts a binary...
This transistor radio was manufactured in the 60s and has 6 transistors from that time. The...