Describes the realization and preliminary tests of a two terminal-pair digital impedance bridge. The bridge, with a very simple architecture, is based on a commercial two-channel digital signal synthesizer, and a synchronous detector. The bridge can perform comparisons between impedances having arbitrary phase and magnitude ratio: its balance is achieved automatically in less than a minute. R-C comparisons with calibrated standard, at kHz frequency and 100 kΩ magnitude level, give ratio errors of the order of 10-5, with potential for further improvements.
Experiences with a two terminal-pair digital impedance bridge / Callegaro, Luca; Kampik, M.; Kim, D. B.; Pourdanesh, F.; Tran, N. T. M.. - (2014), pp. 222-223. (Intervento presentato al convegno 29th Conference on Precision Electromagnetic Measurements tenutosi a Rio de Janeiro, Brazil nel 24-29 September 2014) [10.1109/CPEM.2014.6898339].
Experiences with a two terminal-pair digital impedance bridge
CALLEGARO, LUCA;
2014
Abstract
Describes the realization and preliminary tests of a two terminal-pair digital impedance bridge. The bridge, with a very simple architecture, is based on a commercial two-channel digital signal synthesizer, and a synchronous detector. The bridge can perform comparisons between impedances having arbitrary phase and magnitude ratio: its balance is achieved automatically in less than a minute. R-C comparisons with calibrated standard, at kHz frequency and 100 kΩ magnitude level, give ratio errors of the order of 10-5, with potential for further improvements.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
