Impact Factor of Chinese Journal of Catalysis increases from 1.171 to 1.304—congratulations and thanks to the authors of our most cited articles

According to the Thomson Reuter report on 20 June 2013, the 2012 Impact Factor of Chinese Journal of Catalysis has improved from 1.171 to 1.304. Chinese Journal of Catalysis would like to express our congratulation and appreciation to all the authors who have been part of this success by publishing their good contribution in the Journal.     

海燕牌彩电对比度故障检修实例

本文介绍海燕牌CS51E-7A-R型彩电出现的几例对比度故障的检修过程,供同行参考。例1.故障现象:收看中图像突然变成浮雕状、隐隐约约,但伴音正常,主机面板上除对比度旋钮调节无效外,其它调节及遥控器的控制均正常。分析检修:该机型遥控发射器上没有设置对比度调节功能,对比度控制安装于主机面板操作盒内,与帧同步旋钮并排于盒的左端。试调节对比度旋钮,并仔细观察图像变化,发现对比度稍有改变,但不明显。该机主板系东芝两片(TA7680AP和TA7698AP)机,按照TA7698AP的电气参数,对比