A HIGH-PERFORMANCE ELECTROMAGNETIC VIBRATION ENERGY HARVESTER BASED ON RING MAGNETS WITH HALBACH CONFIGURATION

This paper proposes and studies a ring-shaped Bluetooth Hands-Free Kit 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

In Russian historiography, for more than a century, there have been disputes about the possible reasons for the origin of East Slavic / Old Russian cities.Today, several hypotheses coexist: 1) cities are products of state power, 2) their emergence was influenced by the trade and craft factor, 3) the needs of defense influenced the formation of town