Before i return the P2140 is it posible to use both the inverter and p2140.
so from the bettary it gonna go to p2140 then from it +12v it gonna go to the inverter and then to the powersupply you thinks its a good idia or not ?
and would I be able to use the options of p2140 ?
and how about the power when my comp on hibrante would it eat more power or not ??
I think it depends on your inverter. Look in your manual. For my inverter, it says it only draw 8mA when no power is drawn and is on. But if your inverter's fan stays on even with no power draw, then your current draw is probably higher. You could always use a system of relays to turn your inverter off when your ACC is cut, and the computer is off.
By a system of relays, I mean use relays to turn on the inverter when the engine is off, and turn the inverter off when the engine is off. However, you need more than one relay, because you also want the inverter to stay when the computer is on, regardless of whether the engine is on. Its hard to describe with words, but read this post:
p2140 before the inverter, it could kill the power to the inverter after a preset time. So the inverter could be powered off the entire time the car is (minus the preset delay for PC hibernation/shutdown time).
you start the car
x seconds later, startup controller allows power to be passed to the inverter and on to the PC
you turn the car off
shutdown controller sends a signal to the PC to start shutdown or hibernation
z seconds later, all power out of the 2140 is killed
yes that what i am talking about Walstib + sometimes i use the pc when the car is not running and i always afraid that it will drain my battery and i will have to ask someone for juice.
is there other stuff not the p2140 that can do the same thing (p2140 is expansive) ?