This adjustable circuit from 0 to 200 nA was found in a 90's EDN. The components can still be found relatively easily, as they are CMOS.
This circuit is the transmitter for the previous project and also for what will come next. It is a...
This differential amplifier, found in a 1964 Electronic Design, has a gain of 30. The setting can be...
This circuit was found in a 1964 Electronic Design. The transistors are of the time, but can be...