When we’re not using a stepper motor to ensure precise positioning of a robot element, it can be used as a traction motor, in place of the stand-ard modified servos presented else-wher... Read more
If you look at the chassis of the zBot vehi-cle, you’ll find two parts requiring intel-ligent control: the steering servo and the DC motor. The so called H-bridge is the normal circuit... Read more
This simple circuit drives DC motors with a maximum current of 1 A and can be built with readily available components. The output voltage is adjustable between 0 and 14 V and the polarity ca... Read more
Sometimes it’s necessary to add a D/ A converter to a microcontroller for a specific application. This can be fairly simply accomplished by interfacing an off-the-shelf D/A converter t... Read more
Stepper motors are available in several versions and sizes with a variety of operating voltages. The advantage of this general-purpose controller is that is can be used with a wide range of... Read more
There is hardly any field in the world of electro-mechanics that has not found an application for the stepper motor. They are used extensively in the world of model making and as actuators i... Read more
We recently bought a train set made by a renowned company and just couldn’t resist looking inside the locomotive. Although it did have an electronic decoder, the DCM motor was already availa... Read more
In single phase AC induction motors, often used in fridges and washing machines, a start winding is used during the starting phase. When the motor has reached a certain speed, this winding i... Read more
Stepper motors are a subject that keeps recurring. This little circuit changes a clock signal (from a square wave generator) into signals with a 90-degree phase difference, which is required... Read more
For a few pounds, you can buy a kit from any automotive accessory shop that will allow your car to be fitted with a central locking door system. Such a kit essentially comprises a number of... Read more
