We found this circuit in the Linear Applications Hanbook of the National Semiconductor in 1994. The semiconductors used are not very common today.
August 2016 –It can be purchased from Mouser Electronics the new converters BD7F100 and BD7F200...
This circuit was obtained in a 1969 documentation. The circuit modulates both the emitter current and...
This low current parallel or shunt type regulator was found in documentation from the 60's. The...