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Waldemar Guilherme Kürten Ihlenfeld, Enrico Mohns
Field Effect Transistor Thermal Converters for the Accurate Measurement of AC Quantities
Conventional thermal converters are used as transfer devices to convert alternating current (AC) quantities into the corresponding direct current (DC) quantities and thus assure traceability to the units of voltage and current of the International System of Units (SI) as maintained by the National Metrology Institutes (NMI). Conventional thermal converters use resistances as heater elements. The field-effect thermal converters (FET-TCs) however, use field-effect transistors as heaters. The FET-heaters work as dynamically controlled impedances and open up a new measurement technique for very accurate determination of effective values and AC power even of very distorted signals.
tm – Technisches Messen, Oldenbourg Wissenschaftsverlag
Print ISSN: 0171-8096
Volume: 70, 11/2003
Pages: 510