Reliable power needed for small computer

Discussion in 'Power Electronics' started by CollieJim, Oct 17, 2016 at 12:26 PM.

  1. CollieJim

    Thread Starter Member

    Nov 27, 2004
    All of my mains power comes from PV panels on the shed roof, with a 48v 800ah battery (unless the sun doesn't shine - then it's the backup generator). I have a small computer that records data from the inverter/charger and provides me with a web page showing a graph of the last 10 hours of charge and load. The computer uses an Intel processor and the only non-volatile storage is a 16GB Compact Flash card.

    When the system switches to the generator there is a brief drop in the mains voltage and the UPS beeps. While that does not appear to cause problems with most stuff, I suspect that it is causing problems with the recording computer. The UPS is a cheapie, not a proper continuous supply, and the computer uses a 12vdc supply plugged into it.

    I would like to add an extra layer in the form of a continuously charged 12v battery to power the computer. I suspect SLA is not suitable for long periods at 12v but if I keep the battery at 13v and use a 7812 that might work...

    Is there a better solution?