No, I’m not power-mad. But my stepper is. We want to use the 36V4 “High power” stepper driver to drive a NEMA 23 or maybe even a NEMA-34 class stepper. It may be high power relative to a NEMA-8 or NEMA-17, but it doesn’t have the oomph for larger motors. Yet we want that 1/256-step stepping. Any suggestions how we can add an outboard set of MOSFET drivers with more-than-adequate current rating?
We are building a small prototype with NEMA-17 as proof-of-concept, so we can use the driver “as is” for this small prototype. But as soon as we know it all works, we want to build a “full-sized” unit. We are all retired and budgets matter; the controllers for the high-powered motors are far, far outside our budget limits. Hence the desire to grab a soldering iron and build our own “controller amplifier” that we could hook up to the 36V4, and do it from our existing parts inventory.
Suggestions, Web links, etc. would be appreciated. We have an assortment of both PMOS and NMOS transistors in TO-220 packages, and a 36V OMG-A supply for the three motors. Our MOSFETs are rated 60V, 30A, with heat sinking.