The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 2023
Filed:
May. 13, 2020
Sea Sonic Electronics Co., Ltd., Taipei, TW;
Wei-Chen Wu, Taipei, TW;
SEA SONIC ELECTRONICS CO., LTD., Taipei, TW;
Abstract
A fan control circuit for controlling at least one fan of a power supply device includes a load sensing unit, a temperature sensing unit, a control unit connected to the load sensing unit, the temperature sensing unit and the fan, and a mode switching unit. The load sensing unit generates a load signal according to an output condition of the power supply device. The temperature sensing unit senses the temperature in the power supply device and generates a temperature signal. The control unit comprises a low-speed operating mode for controlling the fan according to the load signal, a mute mode for controlling the fan according to the temperature signal, and a full-speed operating mode for controlling the fan to run in a rated rotational speed. The mode switching unit controls the control unit to adjust the rotational speed of the fan by one of the three modes.