On 11/25/2014 02:22 PM, Anton Aylward wrote:
The question was "why 19VDC?"
You'll have to ask the whoever designed the computer. I have seen other voltages, so there's nothing sacred about 19V. However, you'll generally find higher voltages with higher power devices. One advantage to using a higher voltage is lower resistance losses. If the target voltage were provided by the power supply, you'd have to worry about how much the voltage would drop in the wires. A lower voltage means higher current for the same amount of power, but the higher current increases the resistance losses. On the other hand, an on board regulator eliminates most of that issue and if the voltage sensor is right at the load, eliminates it. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org