This is the circuit of a commercial radio sold in Japan in the 1960s. The IF is 455 kHz, and the supply is made with a voltage of 9 V. The radio receives stations in the medium wave range.
This circuit was found in a 2006 publication. It uses discrete components and CMOS that are still...
We found this circuit in the November 1992 issue of Radio Electronics magazine. The circuit has...
This simple circuit, from a 2006 documentation, activates a 12 V lamp in the event of a power...