Ic 7812 Pin Diagram. A classic example can be seen in this article where a 7805 ic is used as a cell phone charger regulator. 7812 pin and circuit diagram 7812 is a famous ic which is being widely used in 12v voltage regulator circuits.
A voltage regulator is a 3 terminal device. Under my experience the maximum safe current you can get from one 7812 ic is 1a. Pin 1 is the input pin.
The pin 2 is common between both input as well as output voltage.
Pin 3 is a positive output. We use an lm7812 voltage regulator ic for 12v and lm7912 for 12v. The pin 2 is common between both input as well as output voltage. The positive input is at pin 1.
