Power Supply
Most reprap electronics use 12Vdc ranging from 5A-20A
hot beds themselves can use 5A-15A
there a couple different options of power supply that can be used.
Contents
switching
can be purchased for a specific input and output
http://en.wikipedia.org/wiki/Switched-mode_power_supply
computer
a type of switch mode power supply
computers use various voltages and include many different plugs. they are easy to find but need to select correct wires.
- PCPowerSupply using a computer power supply
brick
limited by amps but is a simple option
http://www.thingiverse.com/thing:13980