Abstract
The Root Mean Square (rms) measurements of
alternating signal of any waveform are frequently done by
means of thermal transfer instruments. The principle of these
thermal transfer instruments is to transfer the heating energy
of resistive load to a temperature-sensing element. The DC
output of the sensor reflects the amount of electrical power (ac
or dc) applied to the input. The paper addresses the
characterization and modelling of an RMS-DC thermal
converter of a solid state technology type at various
frequencies. The theoretical and simulation analysis is carried
out to outline the factors influencing the transfer
characteristics of the converter device in the dc and ac input
regimes.