5A Adjustable Regulated Power Supply

Rajkumar Sharma      http://www.rajkumarsharma.com  
16095
Project tested

5A_Adjustable_Regulated_Power_Supply_G006

This project provides a variable output voltage ranging from 1.2 to 32 V @ 5 A. Project based on LM338K IC, LM338K is adjustable 3 terminal positive voltage regulator capable of supply in excess of 5A over a 1.2V to 32V output range, simple circuit consist few components.

Features

  • Input Supply : 24 VAC or 30 VDC, 5 Amp
  • Output : variable output from 1.2 to 32 V @ 5 A regulated low ripple DC voltage
  • Heatsink for regulator IC
  • Onboard bridge rectifier to convert AC to DC
  • LED indication at input of IC
  • Thermal overload/short circuit protection (provided by IC feature)
  • Screw terminal connector for easy input and output connection
  • Berg connector for connecting potentiometer (POT) to the PCB
  • Filter capacitors for low ripple DC output
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 91 mm x 66 mm

Schematic

5A_Adjustable_Regulated_Power_Supply_SCH

Parts List

5A_Adjustable_Regulated_Power_Supply_BOM

PCB

6 Response on “5A Adjustable Regulated Power Supply

  1. in this circiut it needs feedback to make the voltage constant and doesent decrease when adding load at the output how to make this circiut regulated ?????

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