A Simple H-bridge PWM driver circuit that makes use of a IC 555 integrated circuit is used to regulate the direction and speed of a DC motor. In this circuit the important part is driver transistors are not used, instead the load which is a motor is driven directly through the two IC 555s. Circuit […]
Motor Controllers
Simple Motor PWM Speed Controller Circuit using IC 555
Forget fiddling with voltage knobs, this clever circuit uses a 555 chip and a technique called PWM Pulse Width Modulation to control your DC motors speed. By rapidly switching the motors power on and off in short bursts we can effectively adjust the average voltage, it experiences ultimately controlling its speed. It is like a […]
PWM Motor Speed Control Circuit using Two Transistors
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 […]
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
The construction of a circuit for controlling a DC motors speed and direction is discussed in this article. A common chip known as the IC 555 and an special switch are used. You may change the speed by adjusting the amount of power that is sent to the motor PWM using a knob. You can […]