Improvement in the use of the thermal wattmeter principle: Application to a broad-band device for nonsinusoidal waveform
Luc Erard, Robert Knosp, Radomir Soucek · IEEE Transactions on Instrumentation and Measurement · 1987
A new broad-band thermal wattmeter, based on a thermal converter operating at a constant level at whatever the measured power may be, is described and the principle of its operation is analyzed. The uncertainties arising from its use with sinusoidal and nonsinusoidal waveforms are considered.