灯丝是显象管的心脏。在使用中,不少人有种种疑虑,或使用不当。本文将经常碰到的几种情况作些解释。 1.灯丝的合理工作状态 灯丝是个热源,其功能是保证阴极一定的工作温度(800～850℃),灯丝本身的温度约为1000℃。可从显象管参数表上查到灯丝额定工作电压和极限工作电压,最常用的灯丝额定电压为12、11和6.3V三种。对12V而言,其极限工作电压为10.8V和 The filament is the heart of the tube. In use, many people have all kinds of misgivings or misuse. This article will often encounter several situations to explain. 1. Filament reasonable working condition Filament is a heat source, its function is to ensure a certain cathode operating temperature (800 ~ 850 ℃), the filament itself is about 1000 ℃. Can be found from the kinescope parameters table filament rated working voltage and the maximum operating voltage, the most commonly used filament rated voltage of 12,11 and 6.3V three. For 12V, the ultimate operating voltage of 10.8V and