Title :
Evaluation of 100 ampere, 100 kHz transconductance amplifiers
Author :
Hess, D.T. ; Clarke, K.K.
Author_Institution :
Clarke-Hess Commun. Res. Corp., New York, NY, USA
Abstract :
This paper presents experimental evaluation of the performance of more than ten production units of a 100 A, 100 kHz transconductance amplifier. In addition to the stability, uncertainty, distortion and frequency response, these results indicate that the output impedance may be closely modeled by a parallel combination of a resistor and a capacitor. This model then proves to be very useful for correcting the errors introduced into the high-frequency high current measurements by the parasitic load inductance.
Keywords :
calibration; electric current measurement; frequency response; harmonic distortion; measurement errors; measurement standards; measurement uncertainty; operational amplifiers; 100 A; 100 kHz; amplifier performance; automated range setting; calibration; distortion; error correction; frequency response; high-frequency high current measurements; linearity; output impedance; parallel resistor-capacitor combination; parasitic load inductance; stability; transconductance amplifiers; uncertainty; Capacitors; Current measurement; Distortion measurement; Error correction; Frequency response; Impedance; Stability; Transconductance; Uncertainty; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.700105
