Title :
Level dependence of AC-DC transfer devices
Author :
Simonson, Pär ; Rydler, Karl-Erik
Author_Institution :
Volvo Car Corp., Gothenburg, Sweden
fDate :
4/1/1999 12:00:00 AM
Abstract :
A new method based on summing of phase controlled AC voltages makes it possible to compare thermal voltage converters with a ratio of 2:1 without introducing any error due to level dependence. The method is used to determine the level dependence of thermal voltage converters up to 1 kV and 100 kHz. The level dependence is compared to the change of AC-DC transfer difference due to power dissipation in the range resistor and due to DC-effects in the thermal converter. The results for two investigated TVC´s indicate that the power dissipation is the only cause of level dependence in the range resistor of a high voltage TVC
Keywords :
calibration; convertors; measurement uncertainty; resistors; transfer standards; voltage measurement; 1 kV; 100 kHz; AC voltage measurement; AC-DC transfer devices; AC-DC transfer difference; calibration; level dependence; phase controlled AC voltages; power dissipation; range resistor; thermal voltage converters; uncertainties; voltage summing; Analog-digital conversion; Error correction; Helium; Measurement standards; Power dissipation; Resistors; Testing; Thermal resistance; Voltage control; Voltage measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
