Patent ID: 8437816
Filing Date: 2013-05-07
Classification: H01L

Abstract:
1. An oscillator for applying a time-varying force to a magnet, the oscillator comprising: a high-temperature superconductor material at a temperature, wherein the superconductor material is in a superconducting state in the presence of an external magnetic field below a critical field strength, wherein the critical field strength is a function of the temperature of the superconductor material; a magnet configured to move relative to the material and to have a magnetic field that interacts with the superconductor material; a first superconducting coil configured to apply a non-zero time-invariant magnetic field strength to the superconductor material; and a second superconducting coil configured to apply a time-varying magnetic field strength to the superconductor material, wherein a sum of the non-zero time-invariant magnetic field strength and the time-varying magnetic field strength cycles between at least a first field strength below the critical field strength for the superconductor material at the temperature and at least a second field strength above the critical field strength for the superconductor material at the temperature, such that the superconductor material cycles between a superconducting state and a non-superconducting state, wherein a time-varying force is applied to the magnet by an interaction of the magnet's magnetic field with the superconductor material.