National Institute of Standards and Technology (NIST) researchers have developed a dc and ac Josephson voltage standard system that produces output voltages of up to 0.25V, making possible far more precise measurements and comparisons with existing power-detection-based ac voltage standards. Currently, the team is striving to achieve output voltages of 0.5 to 1V, which would reduce uncertainties in ac voltage measurements by three to four orders of magnitude, similar to today's dc volt standards that are based on quantum effects.
Transfers the control of a large number of motion axes from one numerical control kernel to another within a CNC system, using multiple NCKs, and enables implement control schemes for virtually any type of machine tool.
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