• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Resource icon

Low Power PWM Stepper Motor Driver 2018-08-05

Not open for further replies.


Well-Known Member
Most Helpful Member
crutschow submitted a new article:

Low Power PWM Stepper Motor Driver - Stepper motor driver applies full voltage for fast stepping, then PWM for low power hold

Stepping motors usually require a high voltage pulse (high being higher than the winding voltage at the nominal operating current) to reduce the effect of the L/R time-constant and give a fast current rise in the inductive winding, which is then typically followed by a lower voltage/current hold to minimize power dissipation in the motor.
This is often done with a power resistor in series with the winding or a constant-current circuit, both of which waste significant power in the resistor or...
Read more about this article...
Not open for further replies.

EE World Online Articles