Using CMOS circuits and operational amplifiers of the time, this circuit was found in the September 1977 issue of Radio Electronics magazine. The circuit is powered by a 15 V power source.
This micro AM radio will tune strong stations in the frequency range between 530 and 1,600 kHz....
This circuit was obtained in a Electronics World of 1968. The transistors can be equivalent as the BC558...
Based on an integrated circuit of the time, this circuit appeared in the October 1979 issue of...