hey all,
had this idea for a full bridge rectifier, but instead of normal diodes you would use leds. I know voltage drop would such but if oyu could some how run a half herts source on the array plus some leds wired to the output, then i think it would be a neat demo of how the circuit worked.
It would be really just a demo, because LEDs usually do not withstand more tha 5V in reverse, so with about 2..3V in forward, maximum would be about 5Vrms (7V peak). With 3V drop it leaves just 1V for the "load"...