About the 0-51831-8
The 0-51831-8 is a CVTH circuit board created by Reliance Electric. The front panel of the circuit board has a black attachment with four holes. The black attachment is broken up into two sections. The first section is labeled ARM CURRENT SHUNT and, in that section, has these smaller labels, +ORG 421, and -BLK 420. The second section is labeled FIELD CURRENT SHUNT and, in that section, has these smaller labels, +ORG 37, and -BLK 137. The circuit board has four wires coming through the faceplate from the black attachment. The circuit board has two levels. The top level is simple and has a crystal oscillator along with four black wires with red-eye hook attachments that come through a hole drilled in the board and are connected to four screws. The lower level (main) of the circuit board is mostly covered by this upper level. What can be seen along the outside is various style diodes (orange and black, white and black), resistors that range from small to large with a dark brown base color and stripes, two large black resistors with their energy limits written on them. There are also two small white capacitors with an orange cap on one end, a large white capacitor with an orange cap on one end and a huge capacitor that is secured with a plastic zip tie. A wiring harness/connector is visible under the edge of the upper level as well.
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