Title :
The determination of the evolution of gas dielectric standard capacitor over the frequency range from 1 mHz to 20 Hz
Author_Institution :
Nat. Stand. & Calibration Lab., Damascus, Syria
Abstract :
A measuring procedure for determining the capacitance and the dissipation factor of low-loss capacitors over the frequency range from 1 mHz to 20 Hz is described. The determination of the correction factors due to the imperfection of the different elements used in the measuring circuit is also examined. The principle is to measure the absorption current of the capacitor due to a step voltage by an integrating method. The accuracy of measurement is expected to be a few PPM at 1 mHz.<>
Keywords :
bridge instruments; calibration; capacitance measurement; capacitors; computerised instrumentation; measurement standards; microcomputer applications; 1 mHz to 20 Hz; absorption current; bridge; correction factors; dissipation factor; gas dielectric standard capacitor; integrator; low-loss capacitors; microcomputer; Capacitance measurement; Capacitors; Current measurement; Dielectric loss measurement; Dielectric measurements; Frequency measurement; Integrated circuit measurements; Loss measurement; Measurement standards; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on
Conference_Location :
Ottawa, Ontario, Canada
DOI :
10.1109/CPEM.1990.110058
