[pct-l] self-charging phone

[Tortoise]

I don't know the math or physics involved but the power demands of cell 
phones, etcetera seem to decrease over time. As I recall, the devices work 
by capturing otherwise wasted energy of body and gear movement. So wait and 
see what develops.

Tortoise

<>  Because truth matters.<>


On 2011.06.10 20:01, David Lippke wrote:
> I'm afraid the math and physics say that anything able to extract enough
> energy to charge a smart phone (orders of magnitude greater than that
> required by a watch) will be felt as resistance fighting your own movement
> -- something like what you feel when you rotate a gyroscope or move a
> spinning top off axis, i.e., enough to be considered a nuisance.  In the car
> situation the resistance is used to brake but in this case it will be
> effectively braking you.
>
> I'd love for something like this to exist but am just warning that it won't
> come without noticeable physical cost.   The cost might be acceptable to
> some but I doubt it would for most.
>
> Hmm.. I just thought of a better analogy.   Imagine carrying a 10 foot
> flexible pole horizontally with weights on each end.   The weights would bob
> up and down as you walked.    That would be about what it'd feel like if
> there was such a device out there (even though it wouldn't physically *be*
> that).
>
> Just trying to keep things "real" .. :-}
>
> > From Mojave,
>      "Biker Dave" of "Hiker and Biker"
>
>
>
> On Fri, Jun 10, 2011 at 7:18 PM, Sir Mix-a-lot<atetuna at gmail.com>  wrote:
>
>> Maybe they could use the vibrator as a dual purpose device similar in
>> concept to how some hybrid cars have regenerative brakes.
>>
>> On Fri, Jun 10, 2011 at 5:35 PM, Tortoise<Tortoise73 at charter.net>  wrote:
>>
>>> Hey Monte, good to hear from you.
>>>
>>> I think a more likely and invention will be a cell phone that has a
>>> body-motion generator to use normal movement of the cell phone by the
>>> carrier to charge the phone.Sort of like the old self-winding watches if
>>> one is old enough to remember them.
>>>
>>> Tortoise
>>>
>>> <>   Because truth matters.<>
>>>
>>>
>>> On 2011.06.10 10:45, Monte Dodge wrote:
>>>> Cool ideas,, how about a cell phone that has the front cover that works
>>> as a solar charger. I'd like to see one for the outdoor folks, sit it on
>> a
>>> rock in the sun and it work charge. Just an idea. All in one piece
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>>
>>
>> --
>> Sir Mix-a-lot
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