Make sure your capacitor is rated about 2x what your transformers 'rated' output is, Instead of 24v, youll end up with about 30v maximum, that is unless you suck everything it can put out hook up a voltage regulator.
A bridge rectifier(ac to dc converter) is needed to convert the ac current into ripply dc current, then the capaictor is used to 'un-ripple' the curent. Just a simple capacitor as specced in the gecko drive manual probably wont get all the ripples out, but its ok for the application.
Jon
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