- #1
Chip41
- 2
- 0
Hi all, i was wondering if you could help me calculate a few things to do with induction and electromagnets.
I wanted to look into energy harvesting or charging using electromagnets and wanted to know how to calculate the energy that is created from this product below
http://www.qfonic.com/images/products/shaketocharge/image01.jpg
It is not much more than a coil of wire, a magnet, a bridge rectifier, super capacitor and white LED. A small magnet attached to an on/off switch is used to turn on the light by activating an internal reed relay. Shaking the device forces a large magnet slug to slide back and forth inside the body of the device therefore charging the capacitor inside.
How would i work out exactly how much energy is being gathered from the shaking of this device (if that is a stupid question can you give me an example of a similar system with the WxHxB and no.of coils and size of magnet running through.. so i can get an understanding of how to calculate this.. much appraciated!)
Sorry if its a stupid question
I wanted to look into energy harvesting or charging using electromagnets and wanted to know how to calculate the energy that is created from this product below
http://www.qfonic.com/images/products/shaketocharge/image01.jpg
It is not much more than a coil of wire, a magnet, a bridge rectifier, super capacitor and white LED. A small magnet attached to an on/off switch is used to turn on the light by activating an internal reed relay. Shaking the device forces a large magnet slug to slide back and forth inside the body of the device therefore charging the capacitor inside.
How would i work out exactly how much energy is being gathered from the shaking of this device (if that is a stupid question can you give me an example of a similar system with the WxHxB and no.of coils and size of magnet running through.. so i can get an understanding of how to calculate this.. much appraciated!)
Sorry if its a stupid question