Hi. I have a blower motor I am trying to run at 20v from a 12vdc system. At 12v it draws 12A, but I need it to get to a higher RPM. I'm not sure what the surge current is (turning on). Anyway, I was talking to someone else and they didn't think increasing the voltage with a BC would increase the fan speed. I have planned to try and make a BC w/a 555 and see how it runs. The calculations I got for the BC parts @ 77KHz: Inductor 1.05 uH / 65A 130uF cap 22V 65A diode SO yeah those are pretty huge current values. I'm not sure if I can even find a 65A components. Is there another way to do this that I might be missing? Thanks!