miniature-sized UPS?

mmk92

So I was wondering, is there some sort of miniature-cheap UPS that is capable of powering a router for a couple hours? The reason I'm asking is because I want something to power up my router during night cuts since I do most of my work at night. A regular UPS would be a solution for me, but it's too much for powering only a router and the combination of UPS + battery is relatively expensive an overkill for the purpose that i'd use them for.

Tarek

a 500 VA UPS will run your equipment for an hour

AvoK95

Get the smallest of the cheapest UPS you can find and it will for hours and hours.

yasamoka

If your router is 12V, get a 12V sealed lead-acid battery and connect the router's adapter to the battery terminals and the router.

DNA

yasamoka wroteIf your router is 12V, get a 12V sealed lead-acid battery and connect the router's adapter to the battery terminals and the router.

connecting a non smps directly to dc will not work it will actually cause a short circuit in the primary winding of the adapter main step down transformer.

what you can do though is bypass the adapter and connect the router directly to the battery but this may on some routers cause some small Surface-mount 0ohm resistors to pop and this is because of the current surge while the capacitors are charging fast and there is no current limiting, so to be safe you can use a 7812 voltage regulator with a 40amp battery and your router will stay up couple of days.

shant

i saw a small palm sized ups for desks at a friend, its really small and made for such devices, friend said he got it from compuworld, i have no information on brand or price tho

Hajj

-DNA- wrote
connecting a non smps directly to dc will not work it will actually cause a short circuit in the primary winding of the adapter main step down transformer.

what you can do though is bypass the adapter and connect the router directly to the battery but this may on some routers cause some small Surface-mount 0ohm resistors to pop and this is because of the current surge while the capacitors are charging fast and there is no current limiting, so to be safe you can use a 7812 voltage regulator with a 40amp battery and your router will stay up couple of days.

Or if one has some inclination for electronics, build a simple soft-start circuit to avoid the current surge. Furthermore, One would think that capacitors in a router would be very small and the current surge easily delt with.