This 6-transistor radio was sold in Japan in the 1960s. The super-heterodyne circuit for the OM band was powered by ordinary batteries.
Found in the November 1986 issue of Radio Electronics magazine, this circuit can generate signals of...
The transistors in this circuit can be the BC548 and it also functions as a logic function. The...
Found in an English publication from the 1980s, this circuit uses components that are still common...