一、保险电阻又称保险丝电阻,是具有双重作用的元件:一是起普通电阻器的作用,二是当流经电阻的电流超过额定值时,保险电阻迅速熔断,以保护其他贵重元器件不受损坏。保险电阻的阻值一般均较小,测量方法与普通电阻相同。应急时,可用一只同阻值的金属膜电阻,串联一段保险丝代用。保险丝的熔断电流是流经该电阻工作电 First, the fuse resistance, also known as fuse resistance, is a dual role of the components: First, the role of ordinary resistors, and second, when the current flowing through the resistor exceeds the rated value, the fuse blown quickly to protect other valuable components Damaged. The resistance of the insurance resistance are generally small, the same measurement method and general resistance. In case of emergency, a metal resistor with the same resistance can be used in place of a fuse. The fuse’s fuse current flows through this resistor