Abstract: A parallel fuel cell electrical power system is provided. The parallel fuel cell electrical power system includes a plurality of fuel cell electrical power modules and a direct-current bus (DC bus). Each of the fuel cell electrical power modules has a fuel-cell stack, a current switch, and a reverse current protection element. The DC bus electrically connects the output end of the plurality of fuel cell electrical power modules and makes one fuel cell electrical power module electrically connect to another fuel cell electrical power module in parallel, such that the fuel-cell stacks with a fixed power capacity are combined to effectively output a variety of voltages for a load.

Abstract: A composite magnetic core assembly includes an inner magnetic core and an outer magnetic core. The inner magnetic core is made of a high saturation flux density and low permeability material. The outer magnetic core is made of a low saturation flux density and high permeability material. The outer magnetic core includes a ring-shaped wall and a receptacle. The inner magnetic core is accommodated within the receptacle.

Abstract: The present invention provides a conductive module used for assembling a magnetic element and an electronic component. The conductive module includes a conductive base, an electronic component and a plurality of conductive units. The electronic component is electrically connected to the conductive base and disposed on one side of the conductive base. The conductive units have respective hollow portions. The conductive units are spaced from each other and fixed on the conductive base such that the hollow portions of the conductive units are aligned with each other to define a channel.

Abstract: The present invention provides a conductive module for use in a magnetic element. The conductive module includes a conductive base, an electronic component and a plurality of conductive units. The electronic component is coupled to the conductive base and disposed on one side of the conductive base. The conductive units have respective hollow portions. The conductive units are spaced from each other and fixed on the conductive base such that the hollow portions of the conductive units are aligned with each other to define a channel.

Abstract: A measuring apparatus for measuring power loss of magnetic device is disclosed. The measuring apparatus includes a power converter, a voltage measuring device and a current measuring device. The power converter is connected to the DC power supply and the magnetic device for converting the DC voltage supplied by the DC power supply into a rectangular wave alternating between positive and negative for use by the magnetic device. The voltage measuring device is connected in parallel with the DC power supply for measuring the input voltage of the power converter. The current measuring device is connected in series between the DC power supply and the power converter for measuring the input current of the power converter. The power loss of the magnetic device is substantially equal to the product of the input voltage and input current of the power converter.

Abstract: Transformers are provided. A transformer comprises a ferromagnetic core unit; a bobbin coupled with the ferromagnetic core unit; at least a winding unit as a primary winding and at least a plate as a secondary winding. Also, some of the winding units can act as a secondary winding. At least a winding unit and at least a plate are alternatively stacked in a staggered manner. A conductive wire is wound around the winding unit.

Abstract: Transformers are provided. A transformer comprises a ferromagnetic core unit; a bobbin coupled with the ferromagnetic core unit; at least a winding unit as a primary winding and at least a plate as a secondary winding. Also, some of the winding units can act as a secondary winding. At least a winding unit and at least a plate are alternatively stacked in a staggered manner. A conductive wire is wound around the winding unit.

Abstract: Transformers are provided. A transformer comprises a ferromagnetic core unit; a bobbin coupled with the ferromagnetic core unit; at least a winding unit as a primary winding and at least a plate as a secondary winding. Also, some of the winding units can act as a secondary winding. At least a winding unit and at least a plate are alternatively stacked in a staggered manner. A conductive wire is wound around the winding unit.