Patent ID: 8729842

Claim:
An apparatus comprising: a computer program product (CPP) tangibly embodied in a non-transitory computer readable medium and containing instructions that, when executed, cause a processor to perform operations to control energy transfer from an energy supply to a load, the operations comprising: connect an input node to an output node to transfer energy from a source connected to the input node to a magnetic field that is associated with an output current flowing from the output node to a load, the connection being made during a portion of an operating cycle; disconnect the input node from the output node during a remainder of the operating cycle; control a reverse electromotive force (REMF) voltage associated with the magnetic field by providing a path for the output current to flow when the output node is disconnected from the input node, wherein controlling a REMF voltage comprises providing a path for the output current to flow through a voltage limiting circuit; collect a portion of the energy stored in the magnetic field during the operating cycle in an energy storage element; and supply the collected energy to the load in a subsequent operating cycle.