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:
May. 15, 2012
Filed:
Jul. 01, 2009
Chien-ping Chen, Taoyuan County, TW;
Chien-Ping Chen, Taoyuan County, TW;
Chunghwa Picture Tubes, Ltd., Taoyuan, TW;
Abstract
A protection circuit for a control board is provided. The protection circuit is suitable for being disposed on a light on tester that may output a test voltage to a display module. The protection circuit includes a control device and a voltage stabilizer. The control device includes a first switching element and a control element. The control element enables the first switching element to output an operating voltage. The voltage stabilizer includes a second switching element and an operation module. The operation module may control the second switching element according to the operating voltage, so as to switch on or switch off an input of the test voltage to the display module.