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 is the traditional configuration of the LM317 that appears in applications and other circuits on...
This configuration can be found elsewhere in this section. This was obtained from old RCA...
This circuit produces a clef sound when a pulse is applied to its input. The damping effect is...