This benchtop power supply with various output voltages from 1.5 to 12 V was found in Radio Electronics magazine from August 1960. The circuit uses power transistors of the time.
This simple two-transistor receiver was found in Radio Electronics magazine from September 1960....
This circuit was obtained from the February 1992 Radio Electronics magazine. In it, a bar of 4...
This old integrated amplifier is from a Japanese publication from 1972. The integrated circuit is...