Circuit Diagram Word - RV electrical systems are comprised of two separately derived power systems. The primary system for a conventional RV is a direct current system similar to what you have in your tow vehicle or dingy that uses a 12 volt battery and alternator to recharge the battery.. Circuit training has been around since formal exercise was created. It is a great way to move your clients around a variety of equipment and exercises while keeping them under control.. The PS/2 controller interface is illustrated in Figure 1, “PS/2 Controller”, with inputs shown on the left, outputs on the right, and PS2_CLK and PS2_DAT lines being bidirectional.The blue lines are to be connected to the corresponding pins on the DE2 board, the green lines are used for receiving commands, and the red lines are used for sending commands..