Company Filing History:
Years Active: 2001-2015
Title: Hwangsoo Choi: Innovator in Power Supply Technologies
Introduction
Hwangsoo Choi is a notable inventor based in Fullerton, California, recognized for his contributions to power supply technologies. With a total of 11 patents to his name, Choi has made significant advancements in the field of electrical engineering.
Latest Patents
Among his latest patents is the invention titled "EMI Suppression with Shielded Common Mode Choke." This innovative power supply arrangement features an isolated power supply with a primary and secondary side, where the secondary side is electrically isolated from the primary side. The design includes a common mode choke with two windings wound on a common core, coupled between the primary side of the isolated power supply and an AC mains. Additionally, a shielding surrounds the common mode choke, which is connected to a common potential of the secondary side of the isolated power supply.
Another significant patent is "Flyback with Switching Frequency Responsive to Load and Input Voltage." This power source comprises a power factor corrector controller and an electronically controlled switch that responds to the controller. The design incorporates a first inductor connected in series with the switch, allowing direct current to pass through when the switch is closed. A second inductor, magnetically coupled to the first, provides power to a load in a flyback arrangement. Furthermore, a third inductor is included to represent the voltage levels of both the direct current and the power supplied to the
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