Abstract: A soft-switching power converter includes a main switch, an energy-releasing switch, and an inductive coupled unit. The main switch is a controllable switch. The energy-releasing switch is coupled to the main switch. The inductive coupled unit is coupled to the main switch and the energy-releasing switch. The inductive coupled unit includes a first inductance, a second inductance coupled to the first inductance, and an auxiliary switch unit. The auxiliary switch unit is coupled to the second inductance to form a closed loop. The main switch and the energy-releasing switch are alternately turned on and turned off. The auxiliary switch unit is controlled to start turning on before the main switch is turned on so as to provide at least one current path.

Abstract: A soft-switching power converter includes a main switch, an energy-releasing switch, and an inductive coupled unit. The main switch is a controllable switch. The energy-releasing switch is coupled to the main switch. The inductive coupled unit is coupled to the main switch and the energy-releasing switch. The inductive coupled unit includes a first inductance, a second inductance coupled to the first inductance, and an auxiliary switch unit. The auxiliary switch unit is coupled to the second inductance to form a closed loop. The main switch and the energy-releasing switch are alternately turned on and turned off. The auxiliary switch unit is controlled to start turning on before the main switch is turned on so as to provide at least one current path.

Abstract: The present disclosure provides a semiconductor device. The semiconductor device includes a fin disposed in a first region of the semiconductor device, channel members disposed in a second region of the semiconductor device and stacked in a vertical direction, first and second metal gates disposed on a top surface of the fin, a third metal gate wrapping around each of the channel members, a first implant region in the fin with a first conductivity type, and a second implant region in the fin with a second conductivity opposite the first conductivity type. The fin includes first and second type epitaxial layers alternatingly disposed in the vertical direction. The first and second type epitaxial layers have different material compositions. The first type epitaxial layers and the channel members have the same material composition.

Abstract: A comfort control system includes a user-end subsystem and a system-end subsystem. The user-end subsystem includes an environmental control device, a sensor and a communication apparatus. The environmental control device adjusts an environmental factor value of a predetermined area. The sensor senses an activity value of a user. The communication apparatus sends the activity value and an identifier corresponding to the user. The system-end subsystem includes a communication element, a comfort database and a computing apparatus. The communication element receives the identifier and the activity value. The comfort database includes a basic data table having a physiological value and a preference data table having a control parameter. The computing apparatus looks up the basic data table for the physiological value and looks up the preference data table for a corresponding control parameter. The computing apparatus controls the environmental control device to adjust the environmental factor value.

Abstract: A comfort control system includes a user-end subsystem and a system-end subsystem. The user-end subsystem includes an environmental control device, a sensor and a communication apparatus. The environmental control device adjusts an environmental factor value of a predetermined area. The sensor senses an activity value of a user. The communication apparatus sends the activity value and an identifier corresponding to the user. The system-end subsystem includes a communication element, a comfort database and a computing apparatus. The communication element receives the identifier and the activity value. The comfort database includes a basic data table having a physiological value and a preference data table having a control parameter. The computing apparatus looks up the basic data table for the physiological value and looks up the preference data table for a corresponding control parameter. The computing apparatus controls the environmental control device to adjust the environmental factor value.