Design and performance of a high-frequency wattage-to-voltage converter
James E. Vrancik, United States. National Aeronautics and Space Administration, Lewis Research Center
National Aeronautics and Space Administration ; [For sale for Federal Scientific and Technical Information, Springfield, Virginia 22151], 1970 - Technology & Engineering - 16 pages
High frequency wattage to voltage converter using electronic analog multiplier.
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02 percent AC Voltage Test apparatus attenuator average output Buffer amplifiers circuit being measured circuit being tested current input DC input voltage dc power supply dc to 15 device Differential voltmeter distortion drift test DVM's electronic analog multiplier error as function error increased figure 12 Figure 17 frequency range frequency response frequency test full scale full-scale output function of input hertz HIGH-FREQUENCY WATTAGE-TO-VOLTAGE CONVERTER input channels input resistance input signals input was set instantaneous power instantaneous product kilohms Lewis Research Center Measurement error measuring power microsecond oscilloscope output impedance percent of full Performing Organization phase angle test reactance rise-time test shown in figure sine wave slewing rate square wave square-wave test at constant Test circuit test is shown Test The purpose triangle waves trim pots unity power factor variable frequency Voltage divider voltage input volts peak volts rms Wattage converter Output wattmeters waveform top trace waveforms bottom trace