Who makes high-current diodes?
I've got a DC power system fed by an AC>DC power supply to charge the batteries when the grid is up. When the grid goes down, the power supply is supposed to just turn off, but testing reveals that it turns into a current sink instead. I'd like to put a blocking diode in the wire between the power supply and the main DC bus to prevent the power supply from draining the batteries when the grid fails. However, the diode must pass the full charging current, which is 50A. So I need a diode rated at an Imax of 50A minimum with a minimum Vmax of 35V. Do such beasts exist?
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