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Fast thin-film isothermal ac-dc converter with radiometric sensing

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2 Author(s)
Katzmann, Fred L. ; Montclair Sci. Instrum., Cedar Grove, NJ, USA ; Klonz, M.

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

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Instrumentation and Measurement, IEEE Transactions on  (Volume:44 ,  Issue: 2 )