Voltage Regulators are integrated circuits designed to maintain a stable and constant output voltage regardless of variations in input voltage or load conditions.
The 7905 is a fixed negative voltage regulator IC that provides a stable −5V output from a negative input voltage. It is widely used in dual power supply circuits, analog systems, and instrumentation applications.
7805 is a fixed 5V linear voltage regulator IC in TO-220 package widely used to provide stable 5V output for electronic circuits and microcontroller projects.