I have a 4 axis hobbycnc board running on a 36v transformer. In the middle of a cut today the driver board quit responding. I have been trying to trouble shoot it and have a question. My 36v power supply feeds ac to a bridge rectifier with a large cap and then feeds the resulting dc to the power input on the driver board. The board is marked as 36v max and even though I measure 36vac on the output of the transformer I am getting 50vdc after the bridge rectifier. Do anyone have any idea why I would be getting the 50vdc and I assume that this will cause the board to shut down.
Thanks.
Mike