Title :
Power calibrator using sampled feedback for current and voltage
Author :
Gubisch, A. ; Lualdi, P. ; Miljanic, P. ; West, J.
Author_Institution :
Rotek Instrum. Corp., Waltham, MA, USA
Abstract :
A Power Calibration Source for periodic signals is described, which consists of digitally synthesized voltage and current channels, the outputs of which are controlled by synchronous sampled feedback. This system results in accurate voltage and current wave-form conformity and stability in amplitude and phase at high power levels, regardless of power factor or in-band frequency. The system compensates for errors in calibration normally caused by amplifier non-linearity and loading.
Keywords :
calibration; feedback; power factor; power measurement; power meters; amplifier nonlinearity; amplitude stability; current channels; digitally synthesized channels; in-band frequency; periodic signals; phase stability; power calibrator; power factor; synchronous sampled feedback; voltage channels; waveform conformity; Calibration; Circuit testing; Feedback circuits; Linearity; Output feedback; Signal synthesis; Stability; Tiles; Voltage control; Watthour meters;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.547177
