This power source was found in a 1969’ Electronics World. The version is too sophisticated by the current it supplies and can be implemented with modern transistors.
Found in Popular Electronics from the 90s, this circuit can be used for high voltage applications and...
This circuit was found in a 1968s American. Transistors are of general purpose and the input is a...
This solid-state relay circuit (SSR) or shield is from a 1995 Electronics Now. With it we can...