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Archive for February 14th, 2018

Stepper Motor Current Measurement Setup

As part of installing the bar clamps, I packed away the Tek Hall effect current probes measuring the stepper winding currents:

MPCNC Z Axis AB current probe - overview

MPCNC Z Axis AB current probe – overview

The hulking pistol is a Tektronix A6203 100 A probe, the little black pencil is a Tek A6302 20 A probe:

MPCNC Z Axis AB current probe - detail

MPCNC Z Axis AB current probe – detail

The absurdity of measuring a 600 mA (peak!) current with a 100 A probe isn’t lost on me, but those things have become genuine eBay collectibles over the last few years.

For low-frequency signals, you could probably get by with a Fluke i410 Hall effect current clamp.

Yo, Eks, babes, remember me in your will … [grin]

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