Comments on: Make your own Solar Bag – part two http://www.talk2myshirt.com/blog/archives/275 everything about Wearable Electronic Fri, 19 Mar 2010 07:10:38 -0400 http://wordpress.org/?v=2.8.5 hourly 1 By: shnitz031 http://www.talk2myshirt.com/blog/archives/275/comment-page-1#comment-16553 shnitz031 Sat, 21 Nov 2009 15:58:02 +0000 http://www.talk2myshirt.com/blog/archives/275#comment-16553 this is a nice project.... but can i need help..i want to build a cellphone charger out of a stepper motor, which produces ac current...can some one help me? this is a nice project….
but can i need help..i want to build a cellphone charger out of a stepper motor, which produces ac current…can some one help me?

]]> By: Julia http://www.talk2myshirt.com/blog/archives/275/comment-page-1#comment-12876 Julia Sat, 08 Nov 2008 04:30:28 +0000 http://www.talk2myshirt.com/blog/archives/275#comment-12876 Hi Brian, yes, the solar panel energy can be used for battery charging as well. We are working on such a DIY version and look around for simple to build battery charging circuits. I will let you know when we are ready and post this instructions. Hi Brian,
yes, the solar panel energy can be used for battery charging as well. We are working on such a DIY version and look around for simple to build battery charging circuits. I will let you know when we are ready and post this instructions.

]]> By: brian http://www.talk2myshirt.com/blog/archives/275/comment-page-1#comment-12875 brian Sat, 08 Nov 2008 04:19:02 +0000 http://www.talk2myshirt.com/blog/archives/275#comment-12875 is their any way you can charge battery so you canuse the power for latter as your charging your ipod is their any way you can charge battery so you canuse the power for latter as your charging your ipod

]]> By: Abele http://www.talk2myshirt.com/blog/archives/275/comment-page-1#comment-1714 Abele Tue, 11 Sep 2007 21:17:30 +0000 http://www.talk2myshirt.com/blog/archives/275#comment-1714 @ Nick Wouldn't 1/4A of current also be 250mA of current? Above the 100mA of USB1, but below 500mA for USB2. @ Nick
Wouldn’t 1/4A of current also be 250mA of current? Above the 100mA of USB1, but below 500mA for USB2.

]]> By: Nick http://www.talk2myshirt.com/blog/archives/275/comment-page-1#comment-1641 Nick Fri, 31 Aug 2007 13:34:50 +0000 http://www.talk2myshirt.com/blog/archives/275#comment-1641 That chip only delivers 1/4 A of current. That chip only delivers 1/4 A of current.

]]> By: Dane Kouttron http://www.talk2myshirt.com/blog/archives/275/comment-page-1#comment-1626 Dane Kouttron Fri, 31 Aug 2007 01:48:52 +0000 http://www.talk2myshirt.com/blog/archives/275#comment-1626 Hey, well its an awesome project, i must admit. the drawback is the 7805. a 7805 is a linear regulator, so everything above ~5.6 is burned off as heat. check out the appnote below. maxim-ic makes a dc-dc converter chip which converts values above and below 5v to 5v! its called a step up/ step down converter. you would get more power to your device, and well it would work for voltages below 5v. http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1742 Dane Kouttron Rensselaer Polytechnic www.dklabs.co.nr Hey,
well its an awesome project, i must admit. the drawback is the 7805. a 7805 is a linear regulator, so everything above ~5.6 is burned off as heat. check out the appnote below. maxim-ic makes a dc-dc converter chip which converts values above and below 5v to 5v! its called a step up/ step down converter. you would get more power to your device, and well it would work for voltages below 5v.

http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1742

Dane Kouttron
Rensselaer Polytechnic
http://www.dklabs.co.nr

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