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jobylie
8y

!rant
Need your help!

Tldr: how do I build a system with 2 power supplies so that I can power it from either one?

I'm currently working on a "video editing van" for an upcoming project and I found awesome atx power supplies that you can use on your normal car power source. Something like this: http://powerstream.com/DC-PC-12V.ht...
Here is where it gets tricky: obvioisly it would be easy to build a dedicated system for this purpose but I want to use an existing system with an existing psu. I still want to use the pc normally at home with the standard psu but don't fell like switching every single power connector everytime I take the pc into or out of the van. Do you have any idea how to make some sort of switching mechanism so that I can leave the Hardware as it is and just power it of any of the two psus?
Thanks in advance!

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  • 1
    8y
    If the power supply is DC-DC this should be straightforward - some CarPC power supplies run on 12-36V DC, for example. You could just get an AC-DC adapter (they look like the power bricks for laptops) that matches the input range and which is strong enough (in Watts) to power your PC at home.
  • 1
    8y
    So basically a power redundancy?
  • 0
    8y
    @hawkes thank you, will figure that out.
  • 0
    8y
    @viking8 basically yes, but there are, afaik, no solutions for thatbfor standard psus and Desktop computers
  • 0
    8y
    @jobylie there should be. My previous company used nothing but dual psu servers.
  • 0
    8y
    @viking8 well, yes, servers. Of course there are redundand psus for servers but you can't just use any two with the same system. And there are no redundand power supplies where one of them has the car connectors
  • 1
    8y
    No need for two power supplies, if I correct understood what you are trying to do. You should just be able to use a power brick (don't know the correct english word, it's an AC-DC converter) at home to supply the 12V your linked power supply needs, e.g.:

    At home
    (12V power brick)-(PSU)-(mainboard)

    In the car
    (12V battery)-(PSU)-(mainboard)

    Possibly you need a circuit between the car battery and the PSU, some have that built in, others need that externally.
  • 0
    8y
    Thanks for your support, guys. I will try the 12v power brick solution. The car itself has an extra power loss protection (custom made) so no need for a ups.
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