What is the standard power supply and voltage supply on modern airliners? I'm looking at reducing the weight footprint of some of the computer systems on a commercial liner. A big consumer of weight seems to be in power supplies and conversion. Being a computer guy, I don't know anything about avionics or electricity on commercial liners.

Is there a standard power supply or voltage supply for modern air liners?
Typically 115 VAC, 400 Hz for most large aircraft, which can be rectified and stepped down for DC powered subsystems.  Smaller GA airplanes typically use 12, 14 or 28 VDC for their electrical systems.