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7355Re: NSLU2 using 7805s and a 12V battery

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  • Phil Reed
    May 6, 2008
      Take a look at the products from Dimension Engineering. They have a
      number of small, easily integrated switching power supplies you could use.

      http://www.dimensionengineering.com/

      (just a happy customer...)

      ...phil

      --- In nslu2-general@yahoogroups.com, efil vasers <efilvasers@...> wrote:
      >
      >
      > I'm trying to run my NSLU2 (with a 1GB flash drive, connected to an
      old wifi
      > router) from a 12 volt SLA rechargeable battery (5Ah) using 7805 voltage
      > regulators.
      > So far, I've tried a few different regulators (rated 1 or 1.5 amps), and
      > when I turn the NSLU2 on, after about 30 seconds, the regulators are
      too hot
      > to touch and soon shut themselves down.
      > I'm not sure what the problem is.
      > Just to try, I connected it with a single 7805 (1 amp), which
      immediately
      > shut itself off.
      >
      > I connected the regulators in parallel with each other to provide up
      to 3
      > amps (more than the NSLU2 power supply), so I figured that I
      wouldn't need
      > heatsinks for them. Am I wrong, or is my NSLU2 just behaving strangely?
      > How many people out there have tried this?
      >
      > (For those wondering, this is for a robotics project for school, and the
      > NSLU2 is running Debian)
      > --
      > View this message in context:
      http://www.nabble.com/NSLU2-using-7805s-and-a-12V-battery-tp17030363p17030363.html
      > Sent from the Nslu2 - General mailing list archive at Nabble.com.
      >
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