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DF6数字繁用表是四位数字繁用表。具有体积小,使用方便,稳定能好,抗干扰能力强等优点。但在使用中,也发现了某些不足之处。 一、数码荧光管易受手指触摸而熄灭,测几百伏交流电压时,数码荧光管亮度不一致等现象。 解决办法是在数码管与外壳之间用金属筛网隔离,金属网的一端接-10V,使金属网与荧光管灯丝同电位。就能防止电场的干扰。
DF6 digital multiplication table is a four-digit multiplication table. With small size, easy to use, stable and good, anti-interference ability and so on. However, in use, but also found some shortcomings. First, the digital fluorescent tube susceptible to finger touch and go out, measured a few hundred volts AC voltage, digital fluorescent tube brightness inconsistencies and so on. The solution is to use a metal screen between the digital tube and the shell isolation, one end of the metal meshing -10V, the metal mesh and fluorescent tube filament potential. Can prevent the electric field interference.