The DS3820CJ1A is part of the Mark IV Speedtronic. The DS3820CJ1A was produced by General Electric. This circuit board is relatively small and used in a larger series to control and run gas or steam turbines. A gas or steam turbine uses a large internal combustion engine to mix fuel and air to cause a contained explosion. This explosion creates a series of gases that are under a lot of pressure and force their way out of the engine causing the turbine to move at high speed generating a great deal of energy. The energy created by the moving turbine is then harnessed and used for a multitude of other purposes. The DS3820CJ1A has six small black male terminal ports. These male terminal ports are used to connect the DS3820CJ1A with surrounding circuit boards. The DS3820CJ1A has twelve strips along the metal faceplate. Along the twelve strips, each one has twelve flat head screws. In the center, the left two strips have ten dark blue diodes which direct energy in one direction. The DS3820CJ1A has four holes to place screws or anchors in the four corners to secure the DS3820CJ1A in place. At the bottom edge of the circuit board opposite the male terminal ports is a black circular piece with three wires attached. One wire is grey, one wire is black, and the other wire is white. Each piece of the DS3820CJ1A is labeled.
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** AX Control suggests referring to the original manufacturer's manual for all safety and installation methods. Technical support for the DS3820CJ1A was initially provided by General Electric.