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Benefits of Power Analysis

Power Analysis Detects Subtle Faults in Products Power analysis is essential to quality assurance in production testing for a wide variety of electrical products.  Power analysis (including harmonics and %THD) of a product is an excellent quality indicator of product performance, especially when compared to an identical model. For example,…
November 12, 2018
ArticlesFundamentals of Power Management

AC-DC Current Shunts vs. Current Transformers

Although all Valhalla wattmeters are compatible with general purpose current transformers, there are distinct accuracy and bandwidth advantages to using a current shunt when making a power measurement. Current shunts generally provide greater accuracy over a broader frequency range than current transformers (CT's). Rather than measure actual in-series current flow,…
November 12, 2018
ArticlesFundamentals of Power Management

Watts Converters

For Distorted Waveshapes of All Types The success of the Valhalla 2100 series wattmeter design is centered around a four-quadrant multiplier. The significance of the four quadrant theory is to provide a proper computation for watts under any phase relation between voltage and current to ensure that indeed EI cos…
November 12, 2018