We found this circuit in a 1965 General Electric manual. The components are from the period. Time resistors and capacitors can be changed.
This transformerless 16-ohm speaker circuit was found in a Radio Electronics from October 1963. The...
In the figure we have a solar power source for experiments with this type of energy. The cells must...
This circuit was found in a 1986 documentation and it may be difficult to obtain some of its...