Abstract: The present disclosure relates to a power module with a power path extending through a first field-effect transistor (FET) and a second FET. A primary conductive structure connecting the first FET and the second FET in series provides a primary parasitic inductor within the power path. A first secondary conductive structure connected to both a gate and a source of the first FET provides a first secondary parasitic inductor within a first gate path, and a second secondary conductive structure connected to both a gate and a source of the second FET provides a second secondary parasitic inductor within a second gate path. The first secondary conductive structure and the second secondary conductive structure are configured such that mutual coupling between the first secondary parasitic inductor and the primary parasitic inductor and mutual coupling between the second secondary parasitic inductor and the primary parasitic inductor are substantially symmetrical.

Abstract: A chemical feeder system includes an aqueous chemical contained in a chemical source, the chemical source connected with a fluid stock through a chemical flow conduit and a feeder assembly connected within the chemical flow conduit that includes a metering device, a flow rate sensor and a controller operationally connected between the flow rate sensor and the metering device. A method of controlling the flow rate a treating chemical is applied to a fluid stock includes the steps of positioning a flow sensor upstream of a chemical metering device in a chemical flow conduit between a chemical source and fluid stock, flowing a treating chemical from the source through the chemical flow conduit, determining a desired application flow rate of the treating chemical and adjusting the metering device in response to a flow rate reading at the flow rate sensor to achieve the desired application flow rate.