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Digital sampling measuring system was developed at NIM. AC signals under test were transmitted into the input of AD converter by voltage follower. Under the control of MCU, AD converter synchronously sampled the signal by full period, and the sampling data was transmitted by photo-coupler and calculated by computer. The sampling results compared with the measurement results of FLUKE 5790A. The agreements...
The paper presents a new AC-DC transfer measurement system for voltages up to 1000 V and frequencies up to 1 kHz based on a precision inductive voltage divider. Preliminary evaluations show the possibility of standard uncertainties of less than 3 muV/V at 1000 V.
This paper describes a calibration set-up for electrostatic discharge (ESD) generators used in electromagnetic compatibility (EMC) immunity tests. A coaxial shunt and a voltage divider are used for current and voltage measurements respectively. The presented measuring systems are traceable to the national standards.
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