# Is there an affordable Power Supply capable of 12 Volts and 7 Amps? [closed]

I am trying to power a pump that requires 12 Volts and 7 Amps to run. I have looked around but cannot seem to find a power supply capable of the voltage and the current. Does anyone know where would be a good place to find something like this?

(If an off the shelf power supply is not affordable) Is there some simple combination components to go from 110V AC to 12V DC and deliver the 7A?

I have to admit I am not very well informed in this field, so any help would be greatly appreciated.

Thank you

## closed as off-topic by Leon Heller, nidhin, Daniel Grillo, Ricardo, Nick Alexeev♦Apr 24 '15 at 21:30

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• What about a computer power supply? They have 12V rails and can source quite a bit of current. – Mewa Apr 23 '15 at 20:09
• How would I go about wiring one up to the pump? – Tyler Apr 23 '15 at 20:12
• External in what sense? Just something you can easily connect to? Then yes, there are lots of tutorials online (for example this one or this one). People use these for lab bench power supplies these days. – Mewa Apr 23 '15 at 20:14
• That is perfect, I will defenitely look into that. Thank you very much for the help. – Tyler Apr 23 '15 at 20:20

There are plenty of decent quality 'enclosed' (you will likely have to add an external enclosure for safety etc.) switching power supplies in the $50 range with 12V output and good for more than 7A, however you may wish to determine what the requirements are for starting. As well, depending on the pump, the current may vary significantly during each cycle. You might find you actually need a 350W supply to start and run an 84W (running) pump. There are many companies that make industrial power supplies capable of 12V and 7A, or way more--such as Meanwell, PULS, or Lambda, to name a few. These are available in enclosed, open frame, DIN mount, and other form factors. Whether or not you consider them affordable is something only you can answer--for ~100W you're looking at probably in the$20-60 ballpark.