This interesting circuit of an Electronic Design stores the highest voltage of two applied to its inputs. The circuit is from 1964 and can be adapted to use modern components.
This circuit is from an ancient American documentation. The transistors are of the time and the...
Although it uses a dual-channel FET, which is hard to find today, this circuit was released in a...
Found in Linear Technology documentation from the 90s, this circuit uses an operational amplifier...