Title :
Measurement of electrode surface effects in air capacitors using a precise Coulombmeter
Author :
Bego, Vojislav ; Butorac, Josip ; Gasljevic, Gordan
Author_Institution :
Fac. of Eng., Zagreb Univ., Yugoslavia
fDate :
4/1/1989 12:00:00 AM
Abstract :
A method by which air capacitor electrodes are charged with a DC voltage and then quickly discharged is described. Immediately afterwards, a very sensitive Coulombmeter is switched on to measure the additional discharging of thin dielectric films on the electrodes. The method makes possible the measurement of effects having a time constant of several milliseconds to several thousand seconds, and also enables the frequency dependence of the capacitance to be determined, even for time constants below 1 ms
Keywords :
capacitance; capacitors; charge measurement; dielectric thin films; electrodes; surface phenomena; DC voltage; air capacitor electrodes; air capacitors; electrode surface effects; frequency dependence; thin dielectric films; time constant; Capacitance measurement; Capacitors; Current measurement; Dielectric films; Dielectric measurements; Electrodes; Frequency measurement; Surface discharges; Time measurement; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
