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:
Dec. 29, 2009
Filed:
Sep. 15, 2007
Lei Wang, Kunshan, CN;
Lei Wang, Kunshan, CN;
Micro-Star International Co., Ltd., Jumg-Ho, TW;
MSI Electronic (Kun Shan) Co., Ltd., Kunshan, CN;
Abstract
The present invention discloses a computer apparatus with over-voltage protection function, wherein the over-voltage protection device is electrically connected between the central processing unit (CPU) and the power supply to protect the CPU from damage under the condition of over-voltage failure. The over-voltage protection device comprises a first voltage comparison unit, a reference voltage unit, a second voltage comparison unit, a trigger unit, and a circuit switch unit; wherein, the first voltage comparison unit is used to compare the output voltage from the power supply with the default lower and upper voltage limits, and output a first potential signal; the reference voltage unit is used to output the reference voltage based on the first potential signal; the second voltage comparison unit is used to compare the core voltage of CPU with the reference voltage, and output a second potential signal when the core voltage of CPU is larger than the reference voltage; the trigger unit is used to accept the trigger of the second potential signal, and output a first trigger signal and a second trigger signal; and, the circuit switch unit is used to accept the trigger of the second trigger signal, and close the electrical connection between CPU and the power supply.