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

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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