Evaluation of 100 A, 100 kHz transconductance amplifiers

Author

Hess, Donald T. ; Clarke, Kenneth K.

Author_Institution

Clarke-Hess, New York, NY, USA

Volume

48

Issue

2

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

447

Lastpage

449

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;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.769622

Filename

769622