answered so many times,
Battery based tank circuit (tested)
I have a dc-dc unit (input 10.8 - 26V) and Via epia M10000 and everytime I start car, the PC will reboot..
what I need? A backup batery, diode and resistor?
What kind of DC-DC is it? Who makes it?
other ideas for helping this problem are as follows;
cable upgrades, both ground and feed, but mainly feed (to prevent voltage drop while cranking, if its only 0.1 - 0.5 volt a good upgrade from say 10-12 gauge to 1-2 will make a massive difference over 2-3 meters)
capacitors, depending on alot of things but the right cap circuit would keep the voltage high enough during a quick cranking session
ensure that you have the pc connected directly to the battery via a relay instead of to the ACC/IGN lines as these lines have higher voltage lose with the other things connected to them along with the very thin cabling. at most the acc/ign line should only be used as a relay trigger
tank circuit as previously described
Instead I'd use the M2-ATX as a better, crank surviving, DC-DC converter and once you get tired of EPIA you already have a power supply.
But sure, a tiny 12V/3Ah dry battery and a 5A Schottky diode should also work but I've never tried it.
I think that the OP has either sorted out the problem or given up in the past SIX FREAKIN' YEARS.
vull Why would you resurrect a 6y/o thread and add nothing substantial to this discussion?
I honestly don't get it.
if you dont get it, then it doesnt mean that others dont
lets all rant offtopic now? that's even more pointless