Closed loop stepper motor kit power supply

[Voicecoil]

Yes, you could be pushing your luck, depending on the robustness of the driver module . 36V x root 2 =50.9V peak, subtract 1.6V for rectifier losses and you'll get a peak on-load voltage of 49.3V. But due to the regulation factor of the transformer, when you're not pulling much power it will rise by probably 5% = 51.8V. And that's at nominal mains, remember it can vary by up to 10% (though I've never seen it up by more than 6% here), so taking that figure you could land up with 55V off-load, high mains. I anticipated the same problem on my setup (albeit with a 35V transformer which makes things a tad better) so have designed a regulator circuit which limits the voltage to slightly over 49V. I haven't fully tested it yet, but will let you know how it works once I've given it a thorough work out.