[sdiy] 24V PSU Question

[prototek]

    Hey guys and girls. I have a quick question about power supplies. The
supply is meant for a mic preamp project I'm doing so I hope everyone will
forgive the "un-synthiness" of this post.
    The preamp functions off of 24V but also needs 48V for phantom power.
Since I have no "hands on" experience with psu's this puzzles me. Is there a
way to tap both voltages off of one supply, or do I need two seperate
supplies (24V and 48V respectively)? Any methods for doing this would be
greatly appreciated.

                Thanks,
                John