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This paper describes two methods of electric charge calibration, one based on capacitors and a voltage source, another in a commercial current source. They were compared, and good agreement was found. Strengths and weakness of the two methods are remarked.
The capacitance-charging method is a well-established and handy technique for the generation of dc current in the 100 pA range or lower. This method involves a capacitance standard and a sampling voltmeter, highly stable devices easy to calibrate, and it is robust and insensitive to the voltage burden of the instrument being calibrated. In this paper, we propose a range extender amplifier, which can...
Comparison of loss angle measurements and measurement techniques at power frequency up to 10 kV are presented. The loss angle standards developed by VNIIM are based on low loss ceramic capacitors with a detachable loss resistor in series with it. The tand values of the studied standards ranged from − 1·10−4 to 1000·10−4. The loss angle standards were characterized using established references at VNIIM...
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