This small signal amplifier circuit was found in Motorola's 1969 documentation. The FET and the transistor can be of any type and is battery powered since the consumption is very low.
This simple medium wave receiver was sold in the 1960s in Japan. The circuit used germanium...
This simple circuit makes use of neon lamps to indicate the voltage of a power grid. The lamps are...
This frequency divider circuit that generates a ladder-shaped signal was found in the June 1968...