How to make a power tool speed controller without knowledge of electronics

Not every power tool has a speed controller. But this is a necessary function that improves the quality and comfort of work. To adjust the speed mode of a non-adjustable tool, you can assemble a simple regulator with your own hands. You do not need knowledge in the radio-electronic field, since everything will be assembled on a ready-made module. This is a great option to save money and not overpay for expensive models.

What you will need:

Speed ​​controller assembly process

You need to cut a hole in the cover of the installation box and install a socket in it.

To keep it in place, the mounting screws on the inside of the cover are screwed into nuts with washers or a plate.

A power cord with a plug is connected to the terminals of the power regulator module. The output from it is connected by wires to the contacts of the socket.

The regulator is installed in a standard hole on the side of the mounting box. The wire itself with the plug is inserted through the opposite hole.After this, the mounting box snaps into place.

Now you can adjust the parameters of the electrical network at the outlet, thereby adjusting the speed of asynchronous AC motors. These are the ones that are installed in power tools such as grinders, electric drills, jigsaws, etc.

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Comments (4)
  1. Guest Alexander
    #1 Guest Alexander Guests 7 September 2021 21:21
    7
    amused - hand tools have asynchronous motors - series-excited DC motor - no - no - haven’t heard
    1. Alex
      #2 Alex Guests 14 September 2021 20:48
      3
      Hand tools have COLLECTOR motors! They operate from an alternating current network of 220 volts 50 hertz, and commutator motors also work perfectly on direct current. Such a regulator cannot be installed on asynchronous motors.
  2. Pachinok
    #3 Pachinok Visitors 30 November 2021 13:54
    1
    In addition to the regulator, I plugged a 220V voltmeter into the output of the same control panel.


  3. Marie
    #4 Marie Guests 30 April 2023 23:52
    0
    I made such a regulator - complete failure... Most of the adjustment simply does not work = cannot spin the rotor. In addition, there are not enough hands to work and regulate. But the pedal, based on the regulator from the drill itself, does not take up any hands and regulates the speed much better. The pedal is very easy to make. 2 plates from a board + a hinge for a light door corner and a pair of squares for the height of the regulator button.