adjustable regulated power supply - 1.2 - 15Volt /3A

 adjustable regulated power supply 1.2 - 15Volt /3A

This kit provides a variable output power supply ranging from 1.2 to 15 Volt / 3 A. It uses Low Dropout Positive Regulator LM1084 in TO220 package for delivering variable output voltage.

Schematic

Input - 18 VAC/DC




Output - variable output from 1.2 ~ 15 VOLT / 3 A Regulated low ripple DC voltage
Heatsink for regulator IC

On board bridge rectifier to convert AC to DC

LED indication at input of IC

Power Battery Terminal (PBT) for easy input and output connection

Zener trimmed band gap reference, current limiting and thermal shutdown (provided by IC feature)

Filter capacitors for low ripple DC output

Onboard PCB mounted Potentiometer (POT) for varying the output voltage

PCB dimensions 46 mm x 58 mm

Four mounting holes of 3.2 mm each


Parts List :
 
BR1 = BR34
CN1 = 2 PIN PBT
CN2 = 2 PIN PBT
C1 = 2200UF /25V
C2 = 0.1UF
C3 = 47UF / 25V
D1 = RED LED
P1 = 4.7K POT
R1 = 1.5K
R2 = 120ohm
U1 = LM1084