公开(公告)号：US20240206612A1

公开(公告)日：2024-06-27

申请号：US18288567

申请日：2022-04-19

Applicant: Dyson Technology Limited

Inventor： Yuen Kee LEOW ,  Li NIU ,  Stephen John WOOLAGHAN ,  Kishan Mayur AMRATIA ,  Stephen BERRY ,  Michael James WAITE ,  Andrew John Dennis SPILLMAN ,  Neil WAREHAM ,  Robert STREETER

IPC: A45D20/12 ,  H03K17/56

CPC classification number: A45D20/12 ,  H03K17/56

Abstract: A haircare device includes at least one power semiconductor switch coupled to drive, in use, a heater. A temperature sensor disposed for sensing a temperature of the at least one power semiconductor switch and outputting a temperature signal indicative of the sensed temperature. A controller is configured to determine whether the temperature signal is indicative of a temperature of the one or more power semiconductor switch exceeding a threshold. When the temperature signal is indicative of the temperature of the one or more power semiconductor switch exceeding the threshold, a power output of the at least one power semiconductor switch is turned off or reduced.