Naslov
Use of precise digital voltmeters for phase measurements

Autori
Ilić, Damir ; Butorac, Josip

Izvornik
IEEE Transactions on Instrumentation and Measurement (0018-9456) 50 (2001), 2; 449-452

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
phase difference measurement; digital voltmeters; ac voltage; complex voltage ratio measurement

Sažetak
The possibility of using high-resolution digital voltmeters for ac voltage measurements at a frequency of about 16 Hz is presented. The method of approximate synchronous sampling is used where each sample is measured as the mean value of the one-third cycle of a period. From the samples, the rms value of the "derived" sine is determined using subsequent numeric synchronization, while the phase angle of the first sample is calculated as regression line coefficient. Corrections of phase differences between two voltmeters were determined using only one source in cascade measurements.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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