Publikace

1000 Ohm and 1290.64 Ohm coaxial resistors with calculable frequency dependence have been realized. In contradistinction to common designs of coaxial resistors, the design described in this paper makes it possible to remove the resistive element from the shield and to handle it without cutting the outer cylindrical shield of the resistor. Emphasis has been given to manufacturing technology and suppressing unwanted sources of frequency dependence.

Four terminal-pair coaxial capacitance standards with nominal values of 1 pF and 10 pF have been realized, thin cylindrical electrodes of which are formed by copper foils glued on insulating supports. Parasitic inductances of both standards have been calculated and contribution of these inductances to frequency dependences of the standards has been evaluated. The values of the 1 pF and the 10 pF standard change by 0.04 % and -0.05% respectively when frequency changes from 1 kHz to 1 MHz.

Two bridges for calibrating four-terminal-pair standards of self-inductance in the frequency range from 500 Hz to 10 kHz are described. The first is a multifrequency double-balance bridge for linking inductance to capacitance, the second one being a modified Maxwell-Wien bridge, in which inductive voltage dividers in conjunction with fixed resistance and capacitance standards serve as balance controls.

A new series-parallel capacitance device for calibration of high-frequency inductive voltage dividers is described, which makes calibrations of ratios N:1, N = 1, …, 10 at a frequency of 1 MHz with uncertainties of less than one thousandth of a percent possible.

Two versions of four terminal-pair resistance standards have been made from surface mount resistors. Frequency characteristics of these standards, as well as frequency characteristics of a set of quadrifilar resistors with calculable frequency performance, have been measured by means of an Agilent 4285A precision LCR meter.