This circuit was found in old documentation. Operational amplifiers can be almost any type. Design formulas are given next to the diagram.
The setting of this power supply is only 0.1%. We found it in a 1969 US documentation. Transistors...
We found this interesting transistor generator in European documentation from the 1980s. The...
The circuit shown in the figure uses two of the four operational amplifiers found on the LM324...