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:
Jun. 06, 2017
Filed:
Jun. 11, 2015
Keeper Technology Co., Ltd., New Taipei, TW;
Hsiem-Ming Lee, New Taipei, TW;
Chun-Hsu Shen, New Taipei, TW;
KEEPER TECHNOLOGY CO., LTD., New Taipei, TW;
Abstract
A surge protection device detects whether a surge voltage occurs at a power input port by using a first Zener diode and a second Zener diode. When the power input port receives a normal voltage, the surge protection device turns on a first transistor to transmit the normal voltage to a load. Otherwise, when the power input port receives the surge voltage, the surge protection device prohibits the first transistor from conducting so as to protect the load from being damaged by the surge voltage. The surge protection device protects the load by controlling conducting or not of the first transistor and is manufactured without a surge protection unit. Therefore, manufacturing cost of the surge protection can be decreased.