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 oscillator is from a European publication from the 1980s. The signal generated is of low...
Found in American documentation from the 1980s, this circuit can generate signals from 50 kHz to...
A tap on sensor X1 of the circuit shown in the figure causes the flip-flop formed by the 4 NAND...