This circuit was found in an Electronics Now from the 90's. The integrated regulator circuit and the power transistor must be equipped with heat radiators.
This protection circuit for battery chargers was found in an old Elektor. The relay is according to...
This circuit, suggested by the Linear Applications Handbook of National Semiconductor, uses a very...
Found in a 90’s 303 Circuits, this circuit uses components that are still common and has a common...