This paper proposes and studies a ring-shaped architecture with Halbach configuration for electromagnetic vibration energy harvesters. The proposed transducer consists of three ring magnets with a linear Halbach array that concentrates its magnetic field in the inner space of the mechanism where a single vertically-centered concentric coil has been located. This particular structure a... https://www.roneverhart.com/BULK-PACK-3-12-Ivory-Dragon-Cloud-Premium-Texture-Fibrous-Paper-Lantern/