This circuit is from a documentation about the MC1723, Motorola equivalent of the well-known 723. The transistor admits equivalent and must be mounted in a good heat sink.
The integrated circuit used in this project is not common today, but it can be implemented with more...
Found in an American publication from 1969, this circuit can be adapted to be used as a shield....
This current meter with many scales was found in a 80s American documentation. The operational amplifier...