Introduction: AC Drill Speed Controller

Picture of AC Drill Speed Controller

Due to high RPM of drilling machine,sometimes drill bit will be damaged. To avoid this problem I made this speed controller. We can use this for any type of AC motor's, saw's, fan etc... and also as light intensity controller.

Step 1: Parts Needed

Picture of Parts Needed

Step 2: Assembling

Picture of Assembling
  • Drill two holes in the gang box. One for AC wire and another for dimmer controller.
  • Insert the dimmer in one of the hole and fix it.
  • Fix the AC socket.

Step 3: Connections

Picture of Connections

Wire according to the picture above

Step 4: Finally

Picture of Finally

Make a Label and attach it.. It's finished.


volodymyr str (author)2017-04-07

It 's a good idea for angle grinding machine.

EllenR24 (author)2016-11-07

omg... yet another buy from shop, read manual, install as per instructions.... instructable. Did you re-type it all by your little self? or did you just cut and paste the manual that came with it?

I bought it from china... No manual is provided with it.

It did not work.

rustybender (author)2016-10-16

I like the idea, but I would use this sparingly. Running an electric motor at low voltage can damage the motor. The motor will run hot and wear out quicker.

Dremel used to offer a variable speed controller box you could plug your Dremel (or other tools) into. It kept the voltage constant at all speeds so your tools were safe. I believe it modified the frequency instead of the voltage. There's probably something similar out there that would do the job without risking your tools.

Mjtrinihobby (author)2016-10-09

I like your work.

Thank you

BeachsideHank (author)2016-10-08

These are indeed very handy to have. I would only make one suggestion though; to add a fuse for circuit protection, this controller may be used in several different applications so a safety device would make sense.

Thank you for your suggestion

Kester1 (author)2016-10-08

Very cool!

Thank you

DIY Hacks and How Tos (author)2016-10-08

With controller like this it would be pretty easy to make a drill lathe.

Yes. Thank you for your comment

About This Instructable




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