Totem-pole bridgeless PFC is a very promising topology for GaN devices because of very low reverse recovery. However, inherent challenges exist for this topology at zerocrossing point of AC voltage ...

Highlights Yellow poop isn’t always a cause for concern, but certain symptoms with yellow stool could indicate an underlying health problem. It’s usually a sign of a digestive issue, but other ...

H. pylori (Heliobacter pylori) is a type of bacteria that infects your stomach. It can damage the tissue in your stomach and the first part of your small intestine (the duodenum). In some cases it can ...