As the name indicates they are circular in shape and the pin contacts are arranged inside the periphery of the circular outer covering. Different[[wysiwyg_imageupload::]]standard and variety of circular connectors are available in which some of them are designed for signal transmission only, some designed for power only and some of them are designed for both signal and power. We will be discussing some of the circular connectors in detail, including RF Coaxial, CPC, DIN and XLR.