This small commercial radio for the MW band with germanium transistors was found in Japanese documentation from the 1960s. The circuit is powered by a 9 V battery and has a 455 kHz IF.
This configuration, which appears on other circuits on this site, was found in a European...
This circuit can supply currents up to 1 A from alternating input voltages. The circuit uses...
This very simple circuit was found in a 1977 documentation. The L1 coil has 3 turns of AWG wire 22 to...