Found in a 1969 Ferranti documentation, this circuit uses only bipolar transistors from that time. Transistors can be replaced with modern equivalents.
This circuit was found in a General Electric documentation from 1966. It uses discrete components...
One of the problems with common 3-terminal regulators is that the internal reference, normally 1.25 V,...
Found in a 1970 documentation, this SCR bistable can be implemented with modern equivalent SCRs. Observe...