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Proceedings Paper

Method for reducing harmonic wave voltage of digital synthetic sine wave
Author(s): Bin Wang; Ming Yan; Pan Pan; Wenwu Feng
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Paper Abstract

Developing the ac low voltage standard source need the technology of low-noise digital synthesis sine wave. In this article, we analysed the frequency spectrum characteristic of the digital synthesis sine wave. Considering the ac low voltage had the strict requirement for harmonic wave, we put forward the "harmonic wave counteraction method", and found this function to counteract harmonic wave, and made it come true from the mathematics and electrocircuit. By the strict calculating of the numerical value and testing verification, we testified the feasibility of the method. By using "harmonic wave counteraction method ", every harmonic wave noise was reduced several order of magnitude, and the total noise voltage was less than 4μV in the 50Hz~10kHz frequency range, the uncertainty for the effective value of output voltage was 0.001%.

Paper Details

Date Published: 31 December 2010
PDF: 9 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 754459 (31 December 2010); doi: 10.1117/12.885710
Show Author Affiliations
Bin Wang, Beijing Orient Institute of Measurement and Test (China)
Ming Yan, Beijing Orient Institute of Measurement and Test (China)
Pan Pan, Beijing Orient Institute of Measurement and Test (China)
Wenwu Feng, Beijing Orient Institute of Measurement and Test (China)


Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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