The Speed/current regulator board marked DS3800NSCC1E1C from GE is a component for the Mark IV series. The Mark IV manages steam and gas turbines. It is built with triple-redundant backups on all critical parameters. These intentional redundancies limit the amount of downtime the system has from electronics-related failure, as control is able to shift to backups before an issue affects the entire turbine system.
The DS3800NSCC1E1C is built with three transistors, which are located at several points across the board. It has one light emitting diode placed along its right edge. This is an amber LED that is labeled IMOK. Above this is placed fourteen test points. These are also labeled. The right edge is also populated with one of the board’s two PCB mating connectors. This is a 218A4637P1 connector. The other connector, which is located on the left edge, is a 218A4553-1 A/mp 533002-1 connector. The DS3800NSCC1E1C also has one Augat connector.
The DS3800NSCC1E1C is built primarily with ceramic-covered metal film resistors of differing values. Capacitors may be made of polyester film, ceramic, or another material. Several capacitors on the board are polyester film 708D1 m/e .10 +/- 10% 80v capacitors.
The DS3800NSCC1E1C has over twenty circuits. This includes triple 3-input nand gates and quad differential comparators.
The DS3800NSCC1E1C has been marked for alignment purposes on one edge. It is factory drilled. Extractor clips (made of nylon) are installed in two corners. Extractors may be used as levers to pull boards from tight locations or they may be used as handles so technicians can avoid touching delicate components and circuitry during maintenance and installation.
General Electric was responsible for providing all technical support for the DS3800NSCC1E1C, such as publications like manuals and datasheets, which are often used as reference material for maintenance of the equipment.