voltage from usb port
Category: Computers > Hardware
Asked by: thomasdavisz-ga
List Price: $2.00
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?
Re: voltage from usb port
Answered By: livioflores-ga on 20 Jul 2006 21:04 PDT
Hi!! 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": http://www.seeingwithsound.com/usb_powersupply.htm The mentioned "9V Nokia Booster for Nokia Phones" can be found at this page (just scroll it down until you find it): "WIRELESS PHONE CHARGERS - NOKIA": http://www.ziplinq.com/retractable-cable-cell-nokia.html 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": http://www.maxim-ic.com/appnotes.cfm/appnote_number/3241 Search strategy: "usb voltage" specification usb port voltage I hope this helps you. Best regards, livioflores-ga
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