This commercial receiver from the year 1958 uses two AA cells as Power supply. The circuit is intend to receive MW station and the transistors are germanium types not easy to find today.
This circuit produces a loud audio tone by a small loudspeaker. Power supply voltage ranges from 5...
The 4098 IC contains two monostable multivibrators in the same package. The basic configuration...
This circuit converts a positive voltage to negative, with maximum output current of the order of...