This Linear Technology circuit can measure currents from 100 pA to 100 uA. The circuit is from the 80's, using a component of the era. Transistors are general purpose types.
Found in ancient American documentation this circuit uses semiconductors from the thyristor family such as...
The 8038 integrated circuit is not very common today. It is a circuit that generates signals of...
This circuit was found in General Electric documentation from the 1980s. The circuit is intended...