General Electric (GE) created the IC3600QSPA103B103B printed circuit board (PCB). The IC3600QSPA103B103B is known as a potentiometer board. A potentiometer is also known as a variable resistor. The IC3600QSPA103B103B PCB was created as a part of the MKI-MKII series. The Mark I and II are the earliest generations of the Mark series. These systems were made to operate the functions of both gas and steam turbines.
The IC3600QSPA103B103B has four large components which are the most prominent. These four components are known as relays or contactors. These relays are rectangular in shape. The relays consist of gold metal. These relays have white labels on the top and grey pieces on the ends. The label on each relay features their part numbers. The relays have a voltage of twenty-eight (28) volts DC (28 VDC). These labels also contain the manufacturer’s name (General Electric) along with the GE symbol. These four relays are have been attached to the circuit board by a series of various wires in colors like red, green, and yellow. The IC3600QSPA103B103B has a group of fifteen (17) mid-sized resistors. These resistors are solid grey. There are also two (2) solid red resistors. The resistors are marked with initials from R10 through R28. The IC3600QSPA103B103B also contains four (4) diodes. These diodes are small and solid red. These are marked with labels from CR1 to CR4. The IC3600QSPA103B103B has a long series of metal prongs on the right edge of the board. The numbers five (5) through fifty (50) are aligned along the right side of the IC3600QSPA103B103B in yellow print.