1、使用前,要检查其质量，使用前,先检查一下外观有无损坏、引线是否生锈、端帽是否松动.然后再用万用表复查一下,其阻值是否与标称阻值相符.在 测量前,要选择好合适的电阻档,并进行电阻档调零.测量时,一只手拿万用表的两表笔(同拿筷子一样),另一只手捏住电阻器的中间,用两表笔接触电阻器的两 引出端,可方便测出其阻值.对于外形较小的电阻器,可将其放在桌子上,用表笔直接测量.复测后,与标志不符的电阻器,一般不要选用.
1. Before use, check its quality. Before use, check the appearance for damage, whether the leads are rusted, and whether the end caps are loose Then double check with a multimeter to see if the resistance matches the nominal value Before measurement, it is necessary to select the appropriate resistance range and zero the resistance range When measuring, hold the two probes of the multimeter with one hand (like holding chopsticks), and pinch the middle of the resistor with the other hand. Use the two probes to touch the two terminals of the resistor to easily measure its resistance value For resistors with smaller shapes, they can be placed on a table and measured directly with a probe After retesting, resistors that do not match the markings should generally not be used

2、片状电阻的功率小于一般电阻,使用不同功率的片状电阻时,要留有余量.
2. The power of a chip resistor is lower than that of a general resistor. When using chip resistors of different powers, a margin should be left