Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 12 Issue 3
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- Pages.144-152
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- 1995
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
A Simulation of TV microphonic phenomenon due to Shadow mask Vibration
새도우 마스크 진동에 의한 TV 마이크로포닉 현상 시뮬레이션
- Lim, Jin-Soo ;
- Lee, Soo-Hun ;
- Lee, Jae-Eung
- 임진수 (아주대학교 기계공학과) ;
- 이수훈 (아주대학교 기계공학과) ;
- 이재응 (중앙대학교 기계공학과)
- Published : 1995.03.01
Abstract
TV microphonic phenomenon (black patterns overlapped on the image when TV sound is set too high) was studied experimentally. It was found that this phenomenon was due to the vibration generated at speakers, and transmitted to the CRT through the TV cabinet structure. Based on this fact, a simulative study was carried out on the assumption that the vibratory motion of the shadow mask located in the CRT could cause the landing error of electronic beam. The result of the simulation corresponded qualitatively with experi- mentally observed facts.