The circuit presented is a Japanese commercial radio from the 1960s. With a 4.5 V supply, it is a super-heterodyne type with an IF of 455 kHz. 6 germanium transistors are used.
This circuit divides the voltage of a source by 2, allowing its use as a symmetrical source. In...
This circuit is regulated by zener and provides a voltage of 9 V. The circuit is from a Radio...
There are several manufacturers of the TL061. The configuration given specifically was taken from...