Vibration-driven energy harvesting device and vibration-driven energy harvester

A vibration-driven energy harvesting device, comprising:

• a first vibration-driven energy harvesting assembly constituted with a first fixed comb tooth portion and a first movable comb tooth portion that are interdigitated with each other;
• a second vibration-driven energy harvesting assembly constituted with a second fixed comb tooth portion and a second movable comb tooth portion that are interdigitated with each other;
• a first output electrode connected to the first vibration-driven energy harvesting assembly;
• and
• a second output electrode connected to the second vibration-driven energy harvesting assembly,
• wherein
• the first fixed comb tooth portion and the second fixed comb tooth portion are arranged laterally adjacent to one another in a direction perpendicular to a direction of movement of the first and second movable comb tooth portions, and
• during operation of the vibration-driven energy harvesting device an electrical output of the first vibration-driven energy harvesting assembly is different from an electrical output of the second vibration-driven energy harvesting assembly.