We found this circuit in Mullard's 1960s transistor manual. No information about transformers is given. Transistors are germanium types of the time.
This simple transistorized game that appears in other versions in this section and website, was...
Microsemi Le87557 Differential Amplifier Mouser Electronics offers Microsemi Le87557 single...
In the figure we have an interesting configuration in which we took advantage of the very high...