electronics forum

Rules | Recent posts | topic RSS | Search | Register  | Log in

usb mobile phone charger
Post new topic  Reply to topic    EDAboard.com Forum Index -> PC Programming and Interfacing -> usb mobile phone charger
Author Message
makri



Joined: 01 Jan 2004
Posts: 126
Location: India, Kerala
Post20 Apr 2004 12:49   

usb mobile phone charger
How can I make a usb mobile phone charger!!

pl help
Back to top
Google
AdSense
Google Adsense
Post20 Apr 2004 12:49   

Ads


Back to top
ian3871



Joined: 16 Sep 2002
Posts: 4
Post20 Apr 2004 23:37   

Re: usb mobile phone charger
Very simply you could just use a Zener diode resistor arrangement.

You can sink upto 500mA from USB port.

So get a zener for the voltage needed to charge the phone.

Set up as follows VCC--Resistor---Zener---Ground.

May work

Only took 2seconds to dream up :angel:
Back to top
iwf



Joined: 20 Apr 2004
Posts: 6
Post21 Apr 2004 1:24   

Re: usb mobile phone charger
It is easy,give you a sample:
http://www.national.com/appbriefs/files/AppBrief101.pdf
Back to top
ian3871



Joined: 16 Sep 2002
Posts: 4
Post21 Apr 2004 13:54   

Re: usb mobile phone charger
iwf wrote:
It is easy,give you a sample:


Well this would not work I don't think !!

Mobile phones contain their own charging circuit don't they

So all that is needed is the correct voltage supply the phone will do the rest
Back to top
Arabic versionBulgarian versionCatalan versionCzech versionDanish versionGerman versionGreek versionEnglish versionSpanish versionFinnish versionFrench versionHindi versionCroatian versionIndonesian versionItalian versionHebrew versionJapanese versionKorean versionLithuanian versionLatvian versionDutch versionNorwegian versionPolish versionPortuguese versionRomanian versionRussian versionSlovak versionSlovenian versionSerbian versionSwedish versionTagalog versionUkrainian versionVietnamese versionChinese version
Post new topic  Reply to topic    EDAboard.com Forum Index -> PC Programming and Interfacing -> usb mobile phone charger
Page 1 of 1 All times are GMT + 1 Hour
Similar topics:
mobile phone battery charger always connected to the phone (7)
Big Mobile phone charger project ? (5)
Can I use a 230V mobile phone charger on 117V? (3)
Modifying Mobile Phone Charger for More (Higher) Current (4)
USB charger for cell phone (5)
Make Mobile Phone a USB HOST (1)
Mobile Charger Through the USB Port from Vehicle Battery (7)
USB mobile phone interfacd with the new pic 184550 (2)
Phone charger + Protocol (2)
Cell phone charger (8)


Abuse || Administrator || Moderators || Support us || sitemap
topic RSS