GENERAL DESCRIPTION
The LM7812 series of three terminal  positive regulators are available in the TO-220 package and with several fixed output voltages, making them useful  in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protecti on, making it essentially indestructible. If adequate heat sinki ngisprovided, they can deli ver over 1A output current. Al though designed primarily as fixed voltage regulators, these devices can be used with external  components to obtain adjustable voltages and currents.