Calibration of IVDs at frequencies up to 1 MHz by permuting capacitors

Author

Awan, S.A. ; Kibble, B.P. ; Robinson, I.A.

Author_Institution

Centre for Electromagn. & Time Metrol., Nat. Phys. Lab., Teddington, UK

Volume

147

Issue

4

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

193

Lastpage

195

Abstract

A device has been constructed which permutes eleven nominally equal 50 pF capacitors in a bridge to calibrate the 10:1 and 1:10 ratios of inductive voltage dividers (IVDs) at frequencies up to 1 MHz. A compact design, which is important for high frequency measurements, was implemented using printed circuit boards and ceramic NPO dielectric capacitors. The capacitors are individually shielded to reduce errors from stray capacitances. Comparisons made with results from an existing NPL method of calibrating IVDs at frequencies up to 100 kHz and with results from a recently developed high-frequency four terminal-pair bridge show that better than 10 parts-per-million uncertainty has been attained at 1 MHz

Keywords

bridge instruments; calibration; capacitors; frequency measurement; measurement standards; printed circuits; voltage dividers; 1 MHz; 100 kHz; 50 pF; calibration bridge; ceramic NPO dielectric capacitors; compact design; comparison; high frequency measurement; inductive voltage dividers; measurement errors; permuting capacitors device; printed circuit boards; tray capacitances;

fLanguage

English

Journal_Title

Science, Measurement and Technology, IEE Proceedings -

Publisher

iet

ISSN

1350-2344

Type

jour

DOI

10.1049/ip-smt:20000388

Filename

852295