录像机是一种结构复杂,机电一体化的高精密电器产品。为了保证它能安全可靠的运行,设计者一开始就给其设置了自动保护检测电路.实现自动诊断.自动保护功能。录像机的检测电路主要有潮湿检测、带头带尾检测、防抹检测、方式检测、带盘旋转检测等,本文以夏普VC—A62DT型录像机为例作一介绍。 VCR is a complex structure, mechanical and electrical integration of high-precision electrical products. In order to ensure that it can be safe and reliable operation, the designer set to the beginning of its automatic protection detection circuit to achieve automatic diagnosis. Automatic protection. VCR detection circuit mainly moisture detection, with head and tail detection, anti-wipe detection, mode detection, with disc rotation detection, this article to Sharp VC-A62DT-type VCR as an example for an introduction.