Resistor excellent in micro-linearity characteristic and wear resistance and variable resistor using the same

摘要

Because the particle size distribution of carbon fiber is approximately equal to the normal distribution and 80 % by volume or more carbon fiber is included in the particle size range from 1 to 20 mu m, high conductivity in the fiber length direction of carbon fiber that is served as structural material for improving the wear resistance does not affect the micro-linearity.