Title :
A high-frequency thermal power comparator
Author :
Budovsky, Ilya ; Gibbes, A. Michael ; Arthur, Des C.
Author_Institution :
Nat. Meas. Lab., CSIRO, Lindfield, NSW, Australia
fDate :
4/1/1999 12:00:00 AM
Abstract :
A new thermal power comparator (TPC) is described that covers a frequency range from power frequencies to 200 kHz. The TPC features a resistive voltage divider and shunts, and a thermal multiplier with two differential high-impedance inputs. It incorporates novel developments in the method of reducing LF and HF errors in the power comparison
Keywords :
calibration; comparators (circuits); differential amplifiers; power measurement; transfer standards; voltage dividers; wattmeters; 200 kHz; AC-DC transfer; HF thermal power comparator; calibration; common-mode rejection; differential high-impedance inputs; error reduction method; input buffer amplifiers; precision amplifiers; resistive voltage divider; shunts; thermal multiplier; Calibration; Differential amplifiers; Frequency; Hafnium; Instruments; Inverters; Power amplifiers; Power measurement; Thermal resistance; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
