Citation link:
Authors:
Jivkov, Ivaylo Cankov; Живков, Ивайло; Alexandrova, Maria Petrova; Александрова, Мария Петрова; Dimov, Deyan; Димов, Деян; Kalinova, Radostina; Калинова, Радостина; Nikolova, Vessela; Николова, Весела; Denishev, Vladimir; Денишев, Владимир
Title:
Computer controlled setup for precise electrical measurements – a step towards the virtual instrumentation
Date of Issue:
2007
Is Part of:
Proceedings of the Technical University – Sofia, 57(2), 2007, pp. 183-188
Publisher:
TU – Sofia
Identifiers:
1311-0829 [issn]
Type:
Article
Language:
eng
Abstract:
Virtual instrument for low current and low noise DC electrical measurement based on Keithley 617 electrometer is developed. The software consists of two parts operating in parallel threads – GUI accepting the commands from the operator and a cycle for the data acquisition and control. The device is tested by measurement of resistor with high value of 100 G. Taking the linear regression of the measured data it was found that the value of the conductance obtained is 1.29(0.001)x10-11. -1, which gives a resistance of 77.6 G.. The intercept of 6x10-16 A obtained also from the linear regression demonstrates the low offset current of the device and the low leakage current in the whole measuring circuits
Description:
Reviewer prof. Tihomir Takov. - Figures. - References, pp. 188
