Correct option is C
The 78XX series ICs are a family of voltage regulator ICs that are commonly used in electronic circuits to provide a stable output voltage. The "XX" in 78XX represents a specific voltage, such as 7805 (which provides +5V), 7812 (which provides +12V), etc.
These ICs are linear voltage regulators that operate as series regulators. They regulate the output voltage by dropping the excess voltage in series with the load, ensuring a stable output. The IC has an internal pass transistor, which is placed in series with the load and controls the voltage.
