In this paper, an n-p-n collector incorporated in the back side of a 4H-SiC trench IGBT is presented to reduce the turn-off energy loss. A comparative study between the proposed structure and the ...

In an article posted on June 10, 2019, I described a public health initiative supported by several major Health agencies here in the U.S. to dramatically reduce the number of new HIV cases. These ...

The USS F-1 was hit broadside by another sub during a training exercise and sank in seconds, killing 19 members of the crew.