What I need to do is have a diode bridge circuit that will rectify 110 VAC to ~100VDC. They part im struggling with is that after 5 seconds or so I need to have to voltage dropped to 55VDC. I think I can do this by bypassing one of the diodes in the bridge circuit and going to half wave but i'm not sure how to do that. I need the package to be small and compact. The current draw of the circuit is about 10A. Any ideas.