Reliable power needed for small computer

Discussion in 'Power Electronics' started by CollieJim, Oct 17, 2016.

  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?