论文部分内容阅读
显象管是电视机的主要部件,目前在制造和电路设计方面还存在三个不完善之处.第一,由于制造显象管时灯丝和引线焊接不牢,产生接触电阻,这类管子往往每次开机时在管颈内部有一闪电强光,恶性循环,灯丝在引线焊接处被烧断.第二,一般晶体管电视机灯丝没有预热,一开机即加上阳极高压,阴极容易造成慢
CRTs are the main components of TV sets, and there are still three imperfections in the manufacturing and circuit design at present: First, since the filament and the lead are not well soldered and the contact resistance is generated when manufacturing the CRT, Each boot has a lightning bolt inside the neck, a vicious cycle, the filament is burned in the lead welding .Second, the general transistor TV filament is not preheated, a boot that is coupled with the anode voltage, the cathode is likely to cause slow