We found this Vox in a 1969 Motorola documentation. Transistors support modern equivalents and the SCR can be a TIC106. The reset is done by a push button.
This circuit uses a capacitor that depends on the frequency of the crystal. We found it in a 1967...
This circuit consists in a full-wave bridge rectifier or Graetz Bridge as its is also called. The...
This stair generator uses an R/2Fl network to determine the amplitude of the steps. This circuit...