This 1960s Japanese 5-transistor radio is powered by 9 V and has good sensitivity for the medium wave range. The configuration is of the superheterodyne type with FI of 455 kHz.
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,...