![]() ![]() They have 3.3V, 5V and 12V models at 0.5A or 2A capacities, and can handle up to 36V input. Don't even require any extra external components in most cases. Recently started tinkering a lot with Arduinos and such, and found some Murata dc-dc switching supplies at Mouser that are direct 78XX-series voltage regulator replacements. A fair bit of the low-power devices I use are now 5V input, but I now have an easy way around that should I need to. I've since gone 48V battery bank, so just run everything off the AC inverter, but occasionally give thought to what I'd have to do to run off a 12V battery in a pinch. I never equalized with this stuff connected either. Of course all this stuff had been around a long time, and was cheap enough I wasn't too concerned with trying it out directly on battery. Also had an Atom-based "carputer" with a power supply specifically designed for car use (something like 8-20V input) so it was fine. Firewall machine was a 7W ARM SBC that again used 12V input. ![]() Had a WRT54G for wireless, and - hm, can't remember the switch I used in addition - both again used 12V wall-warts. Both came with 12V wall-warts, and ran fine straight off the batteries. Had two different cablemodems - first was Linksys, second Scientific Atlanta when the cableco obsoleted the Linksys. I ran my core network directly off 12V back when I was using a 12V main bank. Re: Low power/low voltage computers and network equipment that can be run from 12v batte Has anyone tried wiring a newer Apple Airport directly to a 12v battery? Can it handle input voltages from 11.5-15 volts? I'm currently running mine from inverter AC, but would like to build a cable to run it directly from my 12v battery bank if possible. It is also very reliable in that I always have DC power. This has a built-in DC power supply and runs directly from our 12v battery bank.įor efficience, I prefer powering these devices directly from the 12v batteries instead of DC->inverter AC->DC. Linksys 4-port wireless-N router (WRT-160NL) - Used to be the main household router and main wireless access point, but now just operates as a wireless access point for our downstairs area. This has a built-in DC power supply and runs directly from our 12v battery bank. Linksys 8-port router (BEFSR81)- Used to be the household router, but now just operates as an 8-port switch. Seagate Dockstar - 24/7 server with a 1 TB hard drive that provides backup and internal network services (family calendar server). This is a great linux server and it only draws about 0.25A at 13V. I had to replace the AC power supply with a DC power supply that provides 5v to the main board. Sheevaplug - 24/7 server to monitor my powersystems and a weather station. The following are what have worked for me so far: I have two small linux boxes and some networking equipment that I run directly from my 12v batteries. I'm curious if other people have had success running various computers and networking equipment from 12 volt battery systems.
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