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Q: voltage from usb port ( Answered 4 out of 5 stars,   0 Comments )
Subject: voltage from usb port
Category: Computers > Hardware
Asked by: thomasdavisz-ga
List Price: $2.00
Posted: 20 Jul 2006 17:30 PDT
Expires: 19 Aug 2006 17:30 PDT
Question ID: 748155
Can i get 8 volts (or more) from a USB port?
Subject: Re: voltage from usb port
Answered By: livioflores-ga on 20 Jul 2006 21:04 PDT
Rated:4 out of 5 stars

The answer is no, a regular USB port has four pins: two for 5V DC
power (with a tolerance of 5%) and ground, and two for data. The
maximum current available is 500mA.

You will need a DC-DC converter to raise the 5V output to 8V, I think
that at a good electronic store you can get advice on how to do that;
the following article will give you some good ideas about this:
"USB Voltage Booster: Power Supply for 9V Video Sunglasses":

The mentioned "9V Nokia Booster for Nokia Phones" can be found at this
page (just scroll it down until you find it):

I am not sure if the next article will be useful to you , but I am
feeling very positive today ;>) :
"Charging Batteries Using USB Power - Maxim/Dallas":

Search strategy:
"usb voltage" specification
usb port voltage

I hope this helps you.

Best regards,
thomasdavisz-ga rated this answer:4 out of 5 stars

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