This article explains why you might want to use mixed decay and how it is implemented in the A3977’s current chopper PWM scheme with the percent fast decay (PFD) pin.
Archive for the ‘Stepper Motors’ Category
Understanding Mixed Decay and the Allegro A3977 PFD Percent Fast Decay Feature
Thursday, April 16th, 2009 by Tom ScarinceStepper Motor Wiring Options
Thursday, March 19th, 2009 by Tom ScarinceStepper motors may come with four, five, six or eight wires. This article will help you identify the correct way to wire an unknown stepper motor. (more…)