Stepper Motor Circuits
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Basics
To control a stepper motor, you have to energize each winding individually in a specific and timed order. The energizing is accomplished by a driver circuit (an amplifier). The timing is performed by an indexer circuit and the objective (go forward, go backward, brake, coast, etc.) is controlled by some external user interface, such as a computer or joystick. The figure below shows this process.
Example Circuit
References
- "Stepper Motor Basics", http://www.ams2000.com/pdf/step101.pdf
- "Jones on Stepping Motor Control Circuits", http://www.cs.uiowa.edu/~jones/step/circuits.html
