How can/does a mobile phone provide power to pen drive?

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How can/does a mobile phone provide power to pen drive?

Mobile phones with USB OTG are not uncommon today. I am wondering that how can a battery operated device like mobile phone power a pen drive? From what I know, the power consumption of pen drive on 5V VBUS is around 100mA. The 5V can be derived from the battery voltage using boost converters, but are these converters so efficient and offer such a high current? This question came to my mind when I came across a topic "connecting a pen drive to my android phone" when browsing for USB OTG...

Answer:

That 100ma rating is a maximum, not the normal rating. The pen drive is mostly idle, and should only...

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LoveEnigma at Electrical Engineering Mark as irrelevant Undo

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How to provide power supply to an external hard drive (2.5")?

I wanna diy a power supply for a 2.5" hard drive for connecting it to my Samsung Galaxy tablet 10.1.I have a USB cable that come with the enclosure with 1 USB plug at one end and 2 at the other end. I need to format the hard drive with FAT 32 format...

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Just purchase a 2 1/2 case with power supply. The price of case is less than $5 then you will not to...

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francisc... at Yahoo! Answers Mark as irrelevant Undo

Building a self destructing USB drive

Today's world demands high security devices, like an aggressively self-destructing USB drive. I would like advice on the possibility of creating such a thing if one wouldn't mind offering wisdom. Hello! I have a security/electrical engineering project...

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You don't erase data by overvolting the flash chip or setting it on fire (jesus christ). The correct...

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Could it be that the six million Jews who perished at the hands of the Nazis could have been saved?

Many books have been published, read and forgotten. There is one book, however, which dare not be allowed to share this fate. This is the chronicles of Rabbi Michael Ber Weissmandl, ztl, of the war years, 1942 to 1945, so aptly named "Min Hametzar...

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Zionism played a major role in Hitlerite holocaust but indirectly. Zionism was calling on German Jews...

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What is the best WordPress plugin to stop robots which use a script to write comments as if they were human?

These robots seem to exist for the sole purpose of getting a commercial entered by user name and/or website address.  Some idiot fed the following script to a buggy program, which didn't randomly select between the alternatives, but included them all...

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Install Akismet plugin which will help you prevent spam

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Skoda Fabia problems - what would you do?

Hi There, I have a 2002 Skoda Fabia 1.4 Petrol Automatic, I drive it daily and at the weekend I did 450 miles in it. Yesterday on my return from work 10 mins into the journey going at 30 mph I slowed right down in traffic and when I went to accelerate...

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you will have a hard time selling the car that's in bad condition; i guess you could do a better deal...

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Answer:

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Tom Jenkins at Quora Mark as irrelevant Undo

'Hub power exceeded',when i insert USB flash pen drive??

i bought a new keyboard and it has a USB port in it. i have 2 pen drives. when i insert one of them it works fine,but when i insert the other one it says 'Hub power exceeded'..and i have to put it in the back of my CPU(which it works fine). but i want...

Answer:

The keyboards USB ports are probably the low powered USB model (USB 1.1 the old style), your USB flash...

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kenny739... at Yahoo! Answers Mark as irrelevant Undo

Is it normal to power off your phone before you drive?

I turn off my phone every time I get into a vehicle even if am not the driver and I order my passangers (my kid, and friends) to do the same. Is this too much, or is it okay to do what I do?

Answer:

In our house we have one rule - what the driver says goes. If they want the windows closed then the...

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Harry at Yahoo! Answers Mark as irrelevant Undo

Sony pen drive 16 GB vs transcend pen drive GB vs kingston pen drive 16 GB which pen drive is best ?

sony pen drive 16 GB vs transcend pen drive GB vs kingston pen drive 16 GB which pen drive is best FOR Buying 16 GB PEN DRIVE TELL ME ?

Answer:

sony is better...

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Satyajee... at Yahoo! Answers Mark as irrelevant Undo

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