Four-terminal-pair AC-standard resistances

Soucek, Radomir

doi:10.1109/cpem.1990.109905

Cited by 2 publications

(1 citation statement)

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“…This is the basis for a number of calculable resistance standards, in use today at several national measurement laboratories at values as high as k . For frequencies near 100 kHz or above, a coaxial metallic thin-film resistance element [4], [5] has been developed, which results in lower inductance and negligible skin effect. Straight-wire coaxial and resistance standards having small, calculable frequency-dependent effects were designed and built at the National Institute of Standards and Technology (NIST) by Haddad [6] and Cutkosky in the 1960s.…”

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confidence: 99%

Characterization of four-terminal-pair resistance standards: a comparison of measurements and theory

Elmquist¹,

Jeffery²,

Jarrett³

2001

IEEE Trans. Instrum. Meas.

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Coaxial straight-wire resistance standards with calculable frequency dependence link ac measurements to dc measurements of resistance. Here, several coaxial standards of values 100 and 1000 are compared with each other and with other resistance standards at frequencies of 1592 Hz (= 10 4) and 15920 Hz (= 10 5) using ac bridges. The data are compared with calculations based on the geometry of this resistor design. Our results provide good assurance that the calculations are accurate for the quadrature component of admittance (phase angle), which is directly proportional to frequency. Frequency-dependent contributions to the in-phase component of admittance, which increase as the square of the frequency, are larger than predicted by the calculations.

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confidence: 99%