Naslov
An accurate comparison of high-ohm resistances using improved DVM-based system

Autori
Leniček, Ivan ; Malarić, Roman ; Šala, Alan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the XVII IMEKO World Congress / Ilić, Damir ; Boršić, Mladen ; Butorac, Josip - Zagreb : Hrvatsko mjeriteljsko društvo, 2003, 95-95

Skup
XVII IMEKO World Congress

Mjesto i datum
Dubrovnik, Hrvatska, 22.06.2003. - 27.06.2003

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
high-ohm resistance comparison; electrometer

Sažetak
For purpose of accurate resistance standards comparison a digital voltmeter (DVM) based method has been designed and realized. When measuring resistance standards greater than 100 Mohm capabilities of the method are restricted due to influence of DVM's input parameters: input resistance, input offset current and input capacitance. The measurement system for resistance comparison based on two DVMs has been improved using simple electrometer transconductance amplifier that interfaces digital voltmeter with the measuring circuit. Analysis of influence of electrometer's parameters, realization of the electrometer device and calibration of the system has been presented in this paper. Described measurement system has been merged in resistance traceability chain of Primary Electromagnetic Laboratory (PEL) within the Faculty of Electrical Engineering and Computing of the University of Zagreb, thus participating in building of high-ohm resistance standard base up to 1 Tohm.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA