The Basics Of Wattage And Voltage: How Do You Determine It?

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Okay, so far I have been looking through the internet, scanning and searching numerous amounts of time and for some reason no matter how I often I end up changing my search request it just doesn't seem to find a topic that goes by the whole 'How to determine how much wattage and voltage is in a standard USB adapter" and knowing that there's this forum here, I just thought that maybe it'll will be a good idea to ask people who tend to be more experienced in this sort of thing. Whether or not this sounds clear enough I'm not sure but I would really apperciate it loads if someone could be generous enough to help me out with this paticular topic/problem.

Note- I'm working towards making some sort of USB port equipped for portable use for my turtle beaches X12s, sadly in order to gain enough electricy to power the entire thing I must enable the use of a USB, standard headphone jack? No luck, what-so-ever.

Thank you for taking the time to read this pathetic draft.

Note- Ignore my poor grammar, please.

Add some more details for me as I don't understand?


A usb 2.0 port gives out 5v (volts) and the rating is required to be 500ma (milliamps)

As long as the amps of your headphones are less than the usb port it will work..
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You don't typically need watts unless you are finding power usage.. which is why you aren't finding results!

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Power = Amps x Volts

So:

(500ma*1A/1000ma) = 0.5A

Power = 0.5A * 5v

= 2.5W of power avaliable


More details plz!

http://www.turtlebeach.com/assets/produ ... de_WEB.pdf

This says their product needs 5V at 60mA or 0.3 watts--you need a 5 volt power supply that delivers at least 60mA--more current is OK--the headphones only draw the current it needs.