I was wondering if it is possible to power up a desktop directly via a capable battery without using the UPS during power failure. I mean connecting all the respective wires of the pc that connect to the SMPS with the correct voltages . Wouldn't the above be more efficient then to power the pc via a UPS (convert 12v DC to AC and then the SMPS converting the AC back to DC for PC usable voltages)
http://www.diyaudio.com/forums/everything-else/75088-battery-powered-pc.html
http://www.diyaudio.com/forums/everything-else/75088-battery-powered-pc.html
Do you know where to buy a 5V battery? Or even a 12V battery? (Yes, I mean 12V not 13.8V or whatever a lead-acid becomes at full charge). Can you sequence the supplies on and off?
Strange as it might seem, the way something is usually done is often a good pointer to a good way of doing it. Not always, but often.
Strange as it might seem, the way something is usually done is often a good pointer to a good way of doing it. Not always, but often.
Also you will need 3.3V and +12 and -12 V, although -12 are not usualy too important, the mother will refuse to start without it.
The best bet would be to buy one of those ITX cases that comes with an external 12V supply, and has an internal supply that converts the 12V to 5V and 3.3V etc. I suspect you'd be restricted to low power CPUs, though. There are also supplies intended for car computers; have a look at MP3car.com, or on eBay.
Ideally, you'd also get an LCD monitor (or TV) that ran on 12V.
Ideally, you'd also get an LCD monitor (or TV) that ran on 12V.
Last edited:
There are some notebooks that run under 12V directly, I had a TI 4000 (486) running from solar cells.
- Status
- Not open for further replies.