Why Aren't Mercury Slip Rings Widely Used?
Overview Slip rings are used to transmit power, signals, and data between the rotating and stationary parts of the rotating equipment. Mercury slip rings serve the same purpose, yet they haven't been widely adopted. Today, let's discuss the reasons behind this. What Are Mercury Slip Rings and How Do They Work? A mercury slip ring is a special type of slip ring, also known as a mercury - wetted slip ring or mercury contact. It uses liquid mercury as the conductive medium instead of traditional conductive components like carbon brushes to transfer signals and current between rotating devices. Due to its fluidity, when the rotor rotates, mercury maintains contact with the conductive ring at the molecular level throughout the rotation, ensuring a good electrical connection. Limitations of Mercury Slip Rings l Limited Operating Temperature : Due to the large coefficient of thermal expansion of mercury, mercury slip rings cannot be used at high temperatures. Their ...