Protection circuit for control board
US8179649B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Jun 4, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.