Ic 7805 Symbol. The xx in 78xx indicates the output voltage it provides. For example see table below the 7812 is a 12v regulator whereas the 7805 is a 5v regulator.
The xx in 78xx indicates the output voltage it provides. See 7805 pinout below. Lm78xx series are from national semiconductor.
The name 7805 signifies two meaning 78 means that it is a positive voltage regulator and 05 means that it provides 5v as output.
The output current of this ic can go up to 1 5a. This ic regulator provides a fixed positive output voltage. See 7805 pinout below. The 78xx line are positive voltage regulators.
