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Electromagnetic Induction

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Dr_Doggy

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which ones?
that pic of the battery with the spring is a separate device, then the square one, the LiPO is just a battery

All you really need to do in one of these circuits is take your coil, rectify it and feed it in to a battery, and maybe a current feed regulator.

LiPO batteries need both voltage regulator and current regulator, IDK about regular batteries
 

unclejed613

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rhe actual amount of energy produced by those devices is actually pretty small. and Li batteries require a constant current to charge, which you won't get with these devices. if you've ever used one of the motion activated LED flashlights, you'll know it takes some very vigorous motion to create a usable anount of energy. and LED flashlights only use a few tens of milliwatts of power and cell phone power usage is around a watt or so during a call.
 

Dr_Doggy

Well-Known Member
I'd bet the way they "spring loaded" it , and a bigger coil, would produce some good results, we are only talking about cell charging here,, take a look at those solar robots, they charge energy slow then switch on to burst it out,

OP! lemmie know how it goes!?!
 

crutschow

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Most Helpful Member
The problem with having a kinetic charger in your rucksack is that you don't move up and down much when walking. The body naturally conserves energy by keeping you body fairly level as you walk.

A better place to detect significant motion would be at your knee or ankle.
 
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