论文部分内容阅读
Vo-5630录像机亮度信号重放电路的基本构成如图1所示。它的主要功能是:磁头A和磁头B拾取的信号分别经旋转变压器送入各自的磁头放大器进行放大和频率补偿,由磁头切换电路把A、B通道的射频信号合成为连续的重放射频信号。通过高通滤波器取出重放信号中的亮度调频信号,然后对重放失落的信号进行补偿。采用边带均衡器校正重放频率特性引起的
Vo-5630 video recorder brightness signal playback circuit shown in Figure 1, the basic structure. Its main functions are: head A and head B pick-up signals were sent to their respective head amplifier via a resolver amplifier and frequency compensation, by the head switching circuit A, B channel RF signal is synthesized into a continuous playback RF signal . The high-pass filter is used to extract the luminance FM signal from the playback signal and then compensate for the missing signal. Using the sideband equalizer correction playback frequency characteristics caused