Thread: Do I still need a regulator?

power doesn't need to be regulated going into the CarPC Pro?

Thanks for the info...I originally based my plan for supplying power from the FAQ.

I didn't find any errors in the Faq on Power supplies myself, but I also didn't see anything in the description or the manual for the M1-ATX that mentions word for word about regulating power (I have limited knowledge of combining a PC with 12V automotive power application). According to the FAQ it reads like this:

"First, it is important to explain that there are several components that come to mind when discussing "power systems". However, not all of these components are power related but are often confused as part of the power system. Here is a typical chain of components:

Battery --> Regulator --> startup/shutdown controller --> Power supply --> Computer

Note that the regulator is not, per se, a power supply component. It's job is to REGULATE the power that comes from the battery and alternator to ensure that voltage spikes that could damage the computer don't get through. It also may supply additional power if the voltage momentarily drops below 12 volts, as when starting the car (known as "cranking").

Rule of thumb: If you need over 150 watts of power, you are looking at using an inverter. If you need less, you may be able to use a DC-DC converter.

Words of wisdom: You need BOTH power regulation AND a power supply if you want your system to work properly and reliably."

I would have rather spent money to follow this faq to the letter than find ways to cut corners. That is also why the CarPC Pro was in my initial plan as I planned on having a touch screen in the console and two LCDs in the rear of the vehicle. That could also have been solved by running a wire from the remote jumper on the M1-ATX to a relay that would power the screens on and off with the PC. Also, overheating is a major concern for me because this vehicle will be outside of my studio all summer and the CarPC pro lists a feature that prevents operation during temperature extremes. After searching the forums for some time, I have yet to see a post concerning a fix to add a feature for temperature sensors to start system shutdown when necessary. To a first-timer like myself and someone who also knows plenty enough about constructing PCs, the FAQ on power supplies should be followed to the letter until experience leads to being able to save money the safe way. Once again, thanks for the info.