About the SD-68193
Reliance Electric is the maker of the SD-68193 control card. The SD-68193 has fifteen small blue trimmer variable resistors, nearly one hundred fixed resistors, and five large silver circular variable resistors. The circuit board connects into place using a dual level black male connection terminal on the right of the board and four white male pin connection points across the top edge with a single one on the bottom edge, with another right in the center of the circuit board and the final point is a male blue connection point near the large black terminal. There is nine large black fin like components that are capacitors. The control card also features small light blue circular radial ceramic capacitors, there are also three yellow suppressor capacitors, and a few PCB mount electrolytic capacitors. The SD-68193 has three small blocks with white switches in the center clustered together towards the center of the board and a single black box with a white switch on the left edge. There is also a wide array of transistors across the circuit board. The lower edge of the control card is also home to a single red LED light that is tucked between the black capacitor fins. The SD-68193 also utilizes signal and Zener style didoes to direct energy flow throughout the circuit board. The board has six points around the perimeter to secure it into place and each point is reinforced with a plastic ring.
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