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 is from an old documentation of Radio Shack from the 70s. The transistor should...
This 1980s circuit was found in Motorola documentation. The circuit uses period components that admit of...
The power supply shown in the figure provides output voltages in the range of 1.2 to 25 V with...