Resistors are helpful for many things, but they are not the best choice for changing motor speed smoothly. That is where a clever circuit with just two transistors comes in. This circuit acts like a fancy dimmer switch for your motor. By turning a knob called a potentiometer, you control the power going to the […]
Motor Controllers
Simple Servo Motor Controller Circuit
Imagine a special motor that can turn to very exact positions, this circuit is its brain. It tells the motor how far to turn by sending tiny bursts of electricity. The length of these bursts tells the motor how far to move. The circuit listens to what you tell it to do like turning a […]
Simple AC Drill Speed Controller Circuit
Take control of your drill. An AC drill speed controller circuit is like a cruise control for your power drill. It lets you fine tune the speed of the motor giving you perfect control for any project. This is especially helpful for delicate tasks like woodworking, metalworking or anything where precision matters. Instead of going […]
Adjustable DC Motor Speed Controller Circuit with Reverse Forward Facility
This post shows you how to build a circuit to control the speed and direction of a DC motor. It uses a common chip called the IC 555 and a special switch. A knob lets you adjust the speed by controlling how much power goes to the motor PWM. A switch lets you change direction […]