DS3800VCB is a GE Speedtronic circuit board for turbine control systems. It is part of the Mark IV series. After Mark I and Mark II, the Mark IV was the third successful system in the Mark series. This series, which is utilized in both steam and gas turbine systems, was intended to accomplish all of the needed activities for turbines. The Mark IV controls and automates the turbine's processes. Since 1968, the Mark series has been in use. The technology utilized to make this series dates back to the late 1940s.