Voltage regulator integrated circuit. It is a member of 78xx series of fixed linear voltage regulator ics. The voltage source in a circuit may have fluctuations and would not give the fixed voltage output. The voltage regulator ic maintains the output voltage at a constant value. The xx in 78xx indicates the fixed output voltage it is designed to provide. The package contains 3 types of IC from 78XX Family. These are L7805, L7809, L7812 IC. In this package, you will get 15 pics IC, (5 pieces each type of IC)

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