Mini DC Motor Based Drill Speed Controller Using LM317

MINI DRILL SPEED CONTROLLER USING LM317 (1)

This project will control the speed of your hobby drill with changing output voltage.  Uses the industry famous LM317 in TO220 package for delivering variable output (Voltage).

 

  • Supply input 15 VAC/DC, 1 A
  • Output : upto 12 VDC
  • Bridge rectifier made using discrete 1 A diodes
  • LED indication for input
  • Thermal overload/short circuit protection (provided by IC feature)
  • Heatsink for regulator IC
  • Screw terminal connector for easy input and output connection
  • Onboard PCB mounted Potentiometer for varying the output voltage
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 39 mm x 74 mm

 

MINI DRILL SPEED CONTROLLER USING LM317 (3) MINI DRILL SPEED CONTROLLER USING LM317 (2) MINI DRILL SPEED CONTROLLER USING LM317 (1)

Leave a Reply

Your email address will not be published.