Title :
Fast thin-film isothermal ac-dc converter with radiometric sensing
Author :
Katzmann, Fred L. ; Klonz, Manfred
Author_Institution :
Montclair Sci. Instrum., Cedar Grove, NJ, USA
fDate :
4/1/1995 12:00:00 AM
Abstract :
A dual heater isothermal converter for precise ac-dc transfer is realized by using thin-film heaters on a thin dielectric membrane, and by sensing their temperature with an infrared pyrometer or a thin-film infrared sensor. This reduces diversion of thermal energy from the heaters, as well as reducing the thermal time constant and the ac-dc transfer differences due to thermoelectric effects, shunt capacitances and dielectric losses
Keywords :
infrared detectors; measurement standards; pyrometers; radiometry; thermocouples; thermoelectricity; thin film devices; voltage measurement; ac-dc transfer; ac-dc transfer differences; dielectric losses; dual heater isothermal converter; infrared pyrometer; radiometric sensing; shunt capacitances; thermal time constant; thermocouples; thermoelectric effects; thermopiles; thin dielectric membrane; thin-film heaters; thin-film infrared sensor; thin-film isothermal AC-DC converter; AC-DC power converters; Dielectric losses; Dielectric thin films; Heat transfer; Infrared heating; Infrared sensors; Isothermal processes; Radiometry; Thin film sensors; Transistors;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
