Why Can't We Deal With Shop Lifting?
News1 min ago
No best answer has yet been selected by boobesque. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.But the dynamo bike light sets usually consist of
A. the front light, B. the back light, C the DYNAMO, just buy a complete set and chuck out the lights+wiring+switch if you only want the dynamo.
Well a dynamo is really just a permanent magnet excited generator, the bigger the unit the more power it will produce.
If you want to charge a battery then the simplest way would be to get a 12vdc car alternator (still a dynamo by definition) and turn that with a wind turbine, the alternator has all the control system built in for regulating the charge on the battery etc... its much the simplest way to do it. It could run all day and charge the battery slowly say at 1amp x 24hrs = 24amp/hrs and then you could use it to get more power output over a short period to run the TV say at 10amps for 2.4hrs = 24amp/hrs
Your question about size is a bit more difficult, rotating electrical machines become more efficient the bigger they are, thats why power stations have a few big machines, but if you are running them slowly below their correct operating speed the values become meaningless.