This 6-transistor Japanese radio from the 1960s used germanium transistors and had an output power of 180mW. The circuit is of the superheterodyne type with push-pull class B output.
We found this different configuration that uses a fluorescent lamp as a negative resistance device...
We found this circuit in a 1967 documentation. The circuit can be designed based on current...
This circuit consists of a variation of the previous one being activated when the switch is...