رگولاتور L7812 قطعه ای جهت کاهش و تثبیت ولتاژ می باشد. این آی سی میتواند با ولتاژ ورودی تا  35 ولت، در خروجی ولتاژ  تثبیت شده 12 ولت مثبت ارائه دهد همچنین پکیج این آی سی از نوع TO220 میباشد

These voltage regulators are monolithic integrated circuits designed as fixed–voltage regulators for a wide variety of applications including local, on–card regulation. These regulators employ internal current limiting, thermal shutdown, and safe–area compensation. With adequate heatsinking they can deliver output currents in excess of 1.0 A. Although designed primarily as a fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and currents