Patent ID: 11929198
Assignee: ROMPOWER TECHNOLOGY HOLDINGS, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 6:
7. A system for reducing common-mode noise, the system comprising components of:
a switch mode power supply including primary and secondary sides, primary and secondary side grounds, an input voltage source, a primary switch, a transformer, a core, and a power output, wherein the primary side and the secondary side have primary and secondary quiet terminations, respectively, wherein voltage does not change with respect to the primary side ground and with respect to the secondary side ground;
a magnetic element containing a magnetic core having at least two magnetic legs;
a primary multilayer board which embeds primary windings and first auxiliary windings which report to the primary windings, wherein the primary windings and the first auxiliary windings surround the magnetic legs;
a secondary multilayer board which embeds secondary windings and second auxiliary windings which report to the secondary windings, wherein the secondary windings and the second auxiliary windings surround the magnetic legs;
wherein said magnetic core penetrates both the primary multilayer board and the secondary multilayer board; and
a layer of the secondary multilayer board which is adjacent the primary multilayer board includes a controlled dual function shield which is connected to the secondary quiet termination; and
a layer of the primary multilayer board which is adjacent to the secondary multilayer board includes a controlled dual function shield which is connected to the primary quiet termination.