Abstract: An energy harvester system (EHS) for converting a multiple degree of freedom (MDF) pendulum motion into a rotational motion is provided. The EHS includes a pendulum, a pointing element, and motion control slots (MCSs) enclosed in an external housing. Ambient motion from the external housing generates a MDF pendulum motion in the pendulum. The pointing element is slidably positioned on a rod of the pendulum. The MCSs receive a connector that connects the pointing element to the rod of the pendulum and allow the connector to traverse the MCSs, thereby controlling slidable movement of the pointing element along with the pendulum. When the pendulum moves to first ends of the MCSs, the pointing element slides on the rod to allow a pointer of the pointing element to contact and rotate a gear, thereby converting the MDF pendulum motion into a rotational motion of the gear, which drives an electric generator.

Abstract: A dynamic system for generating electricity from a changing magnetic field includes solenoids routed on a single iron core, switches, and diodes. A first solenoid and a second solenoid are stationary electromagnet coils opposably routed on the iron core. A third solenoid is a stationary electric current induction coil. The first and second solenoids induce opposing magnetic fields on receiving an initial magnetizing current from a solar cell. One of the switches includes a switching system that alternately connects at least one switching node, for example, via one or more pivot joints, to one of at least two contact nodes to form a closed electric system with the first solenoid or the second solenoid, the solar cell, and a load and to change the induced magnetic field in the first solenoid or the second solenoid. The changing magnetic field induces an electric current in the third solenoid.