- Dec 14, 2009
Will the above router fry when connected to a 12V battery?
Put one of those between the battery and the router. Make sure there's a heat sink on the back with heat sink grease between the two.
We had a wireless site burn down in April 2011. We needed a "quick fix" to get the site up and running as soon as possible (those were the days when people still laughed at us when we tried to sell them fibre internet) and used a cheap and nasty 9V TP Link switch between the router and the POE injectors. We wired one of those regulators between the battery bank and the switch.
The site went live and everything worked.
One thing led to another and another. Staff members left. Others joined.
It was only in December 2019 during a detailed systems audit that we found that little guy running 24x7x365 for years and years.
FWIW, it's still running, but will be replaced over Easter weekend when the site gets redone. I doubt the new, managed switch will last as long as the old one has lasted.
Those 78xx series linear voltage regulators can now be replaced by switch-mode drop-in replacements, e.g.
Thank you.Those 78xx series linear voltage regulators can now be replaced by switch-mode drop-in replacements, e.g.
No heatsink required.