The CA3020 integrated circuit was one of the first commercial types, sold in the 1960s. The circuit presented is from 1968 using a power stage with RCA transistors of the time.
This circuit was found in a 1980s document. The integrated circuit is from the time and the power...
This simple binary counter triggers two LEDs according to the number of pulses applied to the...
We found this circuit in a documentation from the 70s. The circuit uses amplifiers from the time,...