Title :
Evaluation of 100 A, 100 kHz transconductance amplifiers
Author :
Hess, Donald T. ; Clarke, Kenneth K.
Author_Institution :
Clarke-Hess, New York, NY, USA
fDate :
4/1/1999 12:00:00 AM
Abstract :
This paper presents experimental evaluation of the performance of more than 25 production units of a 100 A, DC to 100 kHz transconductance amplifier. In addition to the stability, uncertainty, distortion, and frequency response, experimental results seem to indicate that the output impedance may be closely modeled by a parallel combination of a resistor and a capacitor in series with a resistor. This model is then used to estimate, and to correct for, the effect of load inductance on high-frequency, high-current measurements
Keywords :
calibration; circuit stability; electric current measurement; frequency response; measurement uncertainty; operational amplifiers; power amplifiers; 100 A; 100 kHz; HF high-current measurements; calibration; distortion; error correction; frequency response; load inductance; output impedance; parallel RC combination; power amplifiers; stability; transconductance amplifier; uncertainty; Current measurement; Distortion measurement; Frequency response; Impedance; Power amplifiers; Resistors; Stability; Transconductance; Uncertainty; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
