This 3 A adjustable source uses the LM350 integrated circuit, which must have a good heat radiator. The circuit is from 80s documentation and has been explored in other versions on this site.
The phototransistor can be of any type and the adjustment potentiometer 4M7. This circuit was...
We found this circuit in a Popular Electronics from the 90s. Its purpose is to monitor a power...
This configuration can be made based on other operational amplifiers. For other frequencies, the...