Ostrolenk, Faber, Gerb & Soffen, LLP
Capacitor charging current measurement method
 A method for accurately measuring the insulation resistance of a capacitor while reducing time taken for the measurement. To this end, a current calculation equation is first obtained based on an equivalent circuit of a capacitor; then, the calculation equation is modified or corrected based on the degree of coincidence between an actually measured current value m(t) and a calculated current value i(t), the former being within a charge-up region of a dielectric polarization component upon initial application of a voltage; next, the current value at a time point of chargeup termination is predicted or estimated by use of this modified calculation equation. 
Murata Manufacturing Co., Ltd.
G G
G01R G01R
inventional inventional
Yoshinao Mitsuru Masao Toshinari
Nishioka Kitagawa Nishimura Tabata