The equivalent series resistance of silicon solar cell can influence its straight volt-ampere property and short-circuit current, but have no influence on open-circuit voltage.

Considering the influence of residual flux and applying controlled closing technology,transformer inrush current is reduced by combing controlled closing technology and series resistance,setting proper resistance and cut time.

By deducting the circuit equation of solar cells under illumination,simple mathematical expressions to calculate the series resistance and the shunt conductance of solar cells were presented.

In SOI circuits designed with body contact structure, floating body effect is generally suppressed, but the existence of body series resistance still induces “local floating effect” in the part of the body away from the body contact.

In connection with process of measuring resistance value by volt ampere,it analyzes and discusses the methods of parallel connected resistance and series connected resistance.