Originally Posted by Burninator
how many amps are needed on the 12V rail to run a pelt efficiently?
Wattage rating on the Peltier divided by the voltage it requires to run = amps at that voltage.
For example, a 300 watt power supply that runs on 12v Give you an amperage requirement of
300w / 12v = 25amps
The gist of it is, any peltier worth using, draws more power than can be readily provided by a power supply that is running a computer.
You really need a dedicated power supply.