In the figure we have the configuration of series regulator protector suggested by Motorola in 1968 documentation. The transistors are of the time, being able to be used modern equivalents.
This circuit can be used in a single optical link or optical communication system and even using an...
This simple circuit with a 5V regulator was found in an American documentation from the 90's. The...
This circuit was found in a1980s Motorola documentation. The integrated circuit is from that time....