Power Supply

What is the best emergency power supply that can be connected to an existing sump pump?

I have two sump pump pits each with their own pump, but no power supply other than AC. What's the best alternative power supply in the event of a power failure?

There are three choices to fix this:

(1) Battery backup. A secondary pump that will only come on if the water rises above the level of the first pump that runs off of a car battery. You would need two of these.

Disadvantage: only works as long as the battery lasts. Fine for a short power outage, but not much help in a long outage.

(2) Household water powered. These are kind of a cool idea, they are powered off of your city water supply.

Advantage: no power needed and can run indefinitely without any manual intervention by you. If you are away on vacation when the power goes out, this will keep your basement dry.

Disadvantage: Will be staggeringly expensive to run if there is an extended outage. It is basically like running your garden hose full blast to power the pump, and doing that over 3 days will give you an eye-popping water bill.

(3) Generator.

Advantages: Can be run essentially indefinitely at relatively low cost. Has other uses, like keeping your lights on and the food in your fridge safe in an extended outage.

Disadvantages: Unless you are buying one of those very high-end, automatic standby generators, you have to be home when the power is out, so you can go set up the generator and connect it to your existing pumps. Expensive to buy initially and has to be maintained regularly like any small gasoline engine so it's ready to go when you need it.

So there is no one perfect solution. You need to think carefully about things like how often you are on vacation, how long your pumps can go without operating safely, etc.

For me, if money was no option, I'd get two of the household water powered emergency pumps AND have a generator to run the regular, main pumps during any extended outage. If you ever have to go four days without power, you will be very glad you have a generator, and not just because of your sump pumps.

Medfusion Power Supply $142.6 Medfusion Power Supply

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power supply $39.99 Athenatech - Power supply ( internal )

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Respironics Replacement Power Supply $69.13 Replacement Power Supply for Smart Monitor 2 Apnea Monitor.

Morley Regulated Power Supply $19.95 Morley Regulated Power Supply; 9 volt power supply for all Morley pedals. No more need for batteries!  This power supply will feed power to any of your Morley Guitar Effects Pedals.

Dunlop ECB002 AC Power Supply $9.31 Power supply for GCB-100 Bass Crybaby.

Va-100P-5 - 10-Outlet Power Supply $396 This AC Power Supply is an Efficient Ten-outlet Universal Switching Power Supply That Can Supply 5V DC at up to 8a. It is Designed to Operate Kramer Products That Use an External 5V DC Power Transformer. [2965576] Truck Delivery UNSPC: 39121004 13.78L x 8.86W x 3.15H 5 LB 1 Cubes

Ibanez AC109 Power Supply $15.29 This standard Ibanez power power supply supplies 9 volts, 200mA of power for Ibanez pedals.

Mutron PS1A Power Supply $19.95 Save those batteries! This is the optional power supply for the Mutron III.

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How to install a Power Supply

What power supply would i need for a computer with 2 NVIDIA GeForce 9800 GT 1GB video cards?

I am building a computer with the latest techs for gaming. I am planning on Overclocking my processor (an Intel Core i7 w/ 2.66 ghz) and using a liquid cooling system. In addition, I am going with dual video cards and was wondering what power supply would i need?

Spec wise those GPU's don't appear to need any externel PCIe connectors (so the website says - which surprises me a little, I would have thought they each take a 6 pin power connector).

That aside, if you're using a core i7 overclocked, 2 GPUs and therefore a motherboard to accomodate all that plus the usual HDD's and optical drives then I wouldn't go for anything less than 600W. (probably best to get a modular PSU such as: http://www.overclockers.co.uk/showproduct.php?prodid=CA-032-OC&groupid=701&catid=123&subcat=

Personally, in a system equipped with those intentions I wouldn't go for 2 9800 GT cards since they are a little dated now. In their place I would recommend 1 http://www.novatech.co.uk/novatech/specpage.html?BFG-GTXP1 or if you're open to ATI, a better card than all of them for this price is http://www.novatech.co.uk/novatech/specpage.html?ASU-4870

Happy building