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From: kiqyou_vf on 1 Feb 2010 22:07
Hello, I would like to build a simple crank powered USB charger. I
have very little experience in electronics, but I think this is how I
would do it:
http://docs.google.com/View?id=df4479zw_145npdcsbmj

Any guidance concerning components types/specifics and general design
would be greatly appreciated. Thanks a lot for reading!
From: George Herold on 1 Feb 2010 23:06
On Feb 1, 10:07 pm, kiqyou_vf <sorens...(a)gmail.com> wrote:
> Hello, I would like to build a simple crank powered USB charger. I
> have very little experience in electronics, but I think this is how I
> would do it:http://docs.google.com/View?id=df4479zw_145npdcsbmj
>
> Any guidance concerning components types/specifics and general design
> would be greatly appreciated. Thanks a lot for reading!

You should check out this from a concurrent thread.

http://www.camiselectronics.com/handdrivengenerators/handcrankgenerator.php

George H.
From: Jan Panteltje on 2 Feb 2010 07:32
On a sunny day (Mon, 1 Feb 2010 19:07:48 -0800 (PST)) it happened kiqyou_vf
<sorensong(a)gmail.com> wrote in
<9c6563a9-b314-4a7f-aa96-c60e599a78b5(a)l19g2000yqb.googlegroups.com>:

>Hello, I would like to build a simple crank powered USB charger. I
>have very little experience in electronics, but I think this is how I
>would do it:
>http://docs.google.com/View?id=df4479zw_145npdcsbmj
>
>Any guidance concerning components types/specifics and general design
>would be greatly appreciated. Thanks a lot for reading!

Use a bike with the dynamo and a rectifier and some regulator...
At least then the mechacial part already exists, and you can sit down
while making electricity :-)

From: mike on 2 Feb 2010 18:37
kiqyou_vf wrote:
> Hello, I would like to build a simple crank powered USB charger. I
> have very little experience in electronics, but I think this is how I
> would do it:
> http://docs.google.com/View?id=df4479zw_145npdcsbmj
>
> Any guidance concerning components types/specifics and general design
> would be greatly appreciated. Thanks a lot for reading!

Some hand-crank flashlights have a cellphone charger output.
Spend $5 and save yourself a bunch of hassle.
From: JosephKK on 3 Feb 2010 02:08
On Mon, 1 Feb 2010 19:07:48 -0800 (PST), kiqyou_vf <sorensong(a)gmail.com> wrote:

>Hello, I would like to build a simple crank powered USB charger. I
>have very little experience in electronics, but I think this is how I
>would do it:
>http://docs.google.com/View?id=df4479zw_145npdcsbmj
>
>Any guidance concerning components types/specifics and general design
>would be greatly appreciated. Thanks a lot for reading!

Please take this to sci.electronics.basics.
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