with current technology it wouldn't be small. Harness the energy of lungs efficiently enough to generate enough voltage and current would be the first hurdle if possible you could conceivably do without a batteryI daydream far too much. I came up with this idea for a self charging mod. Instead of a normal battery system there would be some sort of capacitor that gets power from you drawing on it. Let's say there's some sort of turbine that moves when you suck air through it. I'm not sure how the tank would work though because the turbine would need a separate airflow.
Probably impossible in reality, but we can dream can't we?
It's not perpetual motion, you have to apply an external force by using the muscles of your diaphragm to move air across the turbine blades to spin them up. There's still a net loss of energy. It'd be no different than those handheld emergency radios that you power up by spinning a crank, and those are in the realm, not just of possibility, but "things that actually exist."
depends on how its engineered. likely won't be seeing this any time . In general people want to do less work.one would get severely hyperventilated supplying the power to recharge the cap
Yea but those hand cranks cannot possibly be the most efficient generators/motors. Another thing is whether or not enough CFM could be generated with suction to provide any turbine with enough energy to move the generator/motor shaft. What would be more plausible is throwing a hand crank on the side (like the flashlights) and building a charge that way, not sure how viable it would be to be 100% battery free and what advantage it might have to solely use capacitors.
put strong rare earth metal mags on the mod and coiled wire along the path you cross and you could make some electricity
would not be pretty
