DS3800NMEC

About the DS3800NMEC

The DS3800NMEC is a PCB manufactured by GE as a motor exciter control board component for the Mark IV system.  This system was created for steam/gas turbine management and has increased efficiency due to the automation of procedures like cool down and shut down.  The Mark IV may also be used to monitor air, water and fuel emissions.

The DS3800NMEC is a larger board with many components attached. It has been fitted with multiple nylon spacer pins to support other PCBs.  The board is also populated with one 6-pin right angled header connector and five PCB mating connectors. Two of these connectors are male vertical pin connectors; these are placed near the center of the board.  The other three are right-angled connectors marked 218A4637P2 8749; these are placed along the right edge.

The DS3800NMEC is alignment marked along two edges.  It has been factory-drilled for mounting. The board has seventeen TP test points, ten transistors, and two jumper switches.  One jumper can be set to “in” or “out,” while the other may be set to “J32” or “J33.” The board has one rotary potentiometer.

The DS3800NMEC is built with various integrated circuits, including quad 741 op amps, quad voltage comparators, dual J-K negative-edge-triggered flip-flops, triple 3-input positive nand gates, quad 2-input nand buffers, 4-bit D latches, crystal oscillators, and operational amplifiers.  

The DS3800NMEC is built primarily with ceramic-covered metal film resistors.  Capacitors may be polyester film, ceramic, or metalized polycarbonate.

Technical support for the DS3800NMEC was provided by GE.  This includes publications such as manuals and datasheets.  These publications may be excellent resources for the end user.