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.
It can be obtained from Mouser Electronics new superFETs III from Fairchild for voltages of 700 V...
In the figure we show how to use a common transformer by changing its secondary to obtain a...
This OF-1 LO oscillator was found in a 1980s American documentation. The transistor can be any...