The GE DS200DCFBG1BJB is a DC power supply board crafted by General Electric. It plays a pivotal role in the Mark V series of turbine control systems, specifically designed to supply control level power to drives and power the enclosure fan. This board is not only integral to the Mark V series but also finds applications in a wide array of systems such as ex2000, DC 2000, FC 2000, GF 2000, ME 2000, CB 2000, and AC2000 IGBT drive applications.

The Mark V series, to which this board belongs, is extensively used in the control and management of steam, wind, and gas turbine automated drive assemblies. It also stands as one of the final product series by General Electric to utilize their patented Speedtronic control system technology. Although the original power supply board for the Mark V series was the DS200DCFBG1, the DS200DCFBG1BJB comes with a three – fold revision history, which may have enhanced its performance and compatibility.

Hardware – wise, it is a large rectangular circuit board populated with numerous components. There are seven 4 – position DIP switch devices, with six of them grouped on one side of the board. These DIP switches are used for various purposes, like scaling different inputs. For instance, switch number 4 (SW4) scales the voltage applied to the VCO output bridge circuit. Additionally, the board features twelve configurable jumpers for further customization.

To indicate the status of the power supply, it has a single neon lamp that signals a blown fuse in the 115 VAC line. There are also two LED indicators, one for a blown fuse in the +24 VDC line and the other for the -24 VDC line. The base circuit board incorporates several notable integrated circuits, each contributing to specific functions of the board and the overall Mark V series automated drive assembly. These include voltage and current feedback VCO circuits, a motor voltage attenuation circuit, AC line magnitude and zero – crossing circuits, contactor drive circuits, and field/armature SCR firing circuits.