Hermach, Francis L. National Institute of Standards and Technology, Gaithersburg, Maryland.
Kinard, Joseph R. National Institute of Standards and Technology, Gaithersburg, Maryland.
- Basic form
- ac-dc transfer instrument
- Multijunction thermal converter
- Solid-state converter
- Links to Primary Literature
- Additional Readings
Devices consisting of a conductor heated by an electric current, with one or more hot junctions of a thermocouple attached to it, so that the output emf responds to the temperature rise, and hence the current. Thermal converters are used with external resistors for alternating-current (ac) and voltage measurements over wide ranges and generally form the basis for calibration of ac voltmeters and the ac ranges of instruments providing known voltages and currents.
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