General Electric created the IC3600SVZD1 12-28 voltage regulator card to be a component in the Speedtronic Mark I-II series. The Mark I, released in 1969, and the Mark II, released in 1973, were the first two series in GE’s Mark line. A voltage regulator is a system created to maintain a stable level of voltage. The regulator creates a constant output voltage which doesn’t change no matter what changes in load or input voltage. A regulator also acts as a buffer to protect components from damage. The IC3600SVZD1 voltage regulator card is what is known as a PCB or printed circuit board.
A large black transformer is the most prominent component on the IC3600SVZD1. This transformer is situated almost directly in the center of the printed circuit board. The transformer is shaped like a rectangle and has the part number 993055G1 printed on the top in white writing. A large silver capacitor is located on both sides of the transformer. These capacitors are silver, and some are solid silver while others feature red on one of the ends. Many yellow capacitors in various sizes are also featured on the IC3600SVZD1 in various places. On one edge of the IC3600SVZD1 next to the transformer, there is a series of about fifty (50) metal prongs. These prongs are labeled with numbers in yellow print. Placed on the opposite side of the IC3600SVZD1 are two (2) potentiometers, also known as variable resistors. An integrated circuit is also featured on the other side of the IC3600SVZD1. Integrated circuits feature self-contained networks of tiny components such as resistors, diodes, and capacitors.