power supply
A power supply is an electrical device that supplies electric power to an electrical load. The primary function of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load.
Transformer -20P1S
Diode D1, D2, D3, D4 -10A01
Diode D5 -LED
Capacitor C1, C2 -1000uF
Resistor R1 2.2K