Description

The DS3800NAIB1 is a printed circuit board (PCB) designed as part of the Speedtronic Mark IV system. The Mark IV, a step forward in steam and gas turbine control, used integrated chipsets with overlapping two-out-of-three voting redundancies to minimize downtime caused by electronics failure. With built-in backups on all critical controls and protection parameters, the Mark IV can simply shunt responsibilities to a different chip if one experiences an issue, and keep running while the user diagnoses the problem.

The DS3800NAIB1 functions as a multi-volt buffer board that reduces power consumption via dynamic voltage and frequency scaling. The DS3800NAIB1

• -has been drilled at the factory for mounting.

• -has integrated circuits (five.)

• -has been marked for alignment and identification (A-J top edge, 6BAD5 bottom.)

• -has a male (218A4551 Amp) and a female (218A4637P2) connector to communicate with other PCBs. They are located opposite each other on the short ends of the board.

• -has three trim potentiometers, located parallel to the top edge.

• -has three rotary potentiometers. These are placed toward the top of the board.

• -has 63 yellow polyester film capacitors. 32 of these are 200V capacitors. 31 are smaller capacitors.

• -has one resistor network array. This may be placed for voltage division.

Installation guidelines for the DS3800NAIB1 may be found in technical support publications like data sheets and manuals, which were originally provided by GE.

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