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How PWM works | Controlling a DC motor with a homemade circuit

This is a very cool electronic project to control dc loads using a very cheap and reliable design. This video also explains ...
Electronic Design

Interface Circuit Allows Users To Control DC Motor's Speed

The circuit in the figure provides three levels of speed control for a dc motor, using a PC’s parallel port (LPT1). A C++ program performs the control functions by allowing the signals from the PC ...
Hackaday

A H-Bridge Motor Controller Tutorial Makes It Simple To Understand

[Afroninja] is back with another great tutorial on basic electronics. This time around he’s explaining H-Bridge motor controllers and how they work! Even if you don’t have much (or any) experience ...
Electronics Weekly

More DC-51 motor speed controller reverse engineering

En route to getting the off-the-peg DC-51 motor speed controller to better suit my small milling machine, I had a go at working out what the circuit is. Approx circuit of DC-51 motor speed controller ...
EDN

Signal Chain Basics #76: Design a Low-Cost PWM Circuit for Single IGBT-Drive Applications

Pulse-width modulation (PWM) is an efficient method for controlling the light intensity of a lamp or the speed of a simple DC motor. It lets you take advantage of the load's inertia by switching the ...
Electronic Design

Simple Addition Permits Voltage Control Of DC-DC Converter's Output

This file type includes high resolution graphics and schematics. In a standard dc-dc converter, a resistor divider typically defines a fixed output voltage. However, applications like programmable ...