Abstract: The number of levels is crucial in the design of a switched-capacitor-based inverter topologies. The number of levels plays an important role in the power quality of the output parameters, ...

Your daily guide to understanding what’s happening — and why it matters. Hosted by Sam Sifton, for readers in the U.S. and Canada. Your daily guide to understanding what’s happening — and why it ...

The Rasmussen Reports daily Presidential Tracking Poll for Friday shows that 44% of Likely U.S. Voters approve of President Trump’s job performance. Fifty-four (54%) disapprove. The latest figures ...