By Fleurette Nina. Car Wiring. Publised at Wednesday, August 30th 2017, 14:23:30 PM. Twist the bare ends together, then use pliers to press the twisted section into a compact shape. Solder the wires together so that they cannot be pulled apart, using only a little solder to avoid making the joint bulky. Wind insulating tape in a spiral over the joint.
By Mailys Laurent. Car Wiring. Publised at Saturday, January 06th 2018, 04:31:20 AM. Wires and bundles of wires are clipped to the bodywork to keep them out of the way. Where they run through a hole, the sharp edges are lined with a rubber grommet. Sometimes the loom is divided into sections joined by multi-pin plugs and sockets, so that it can be removed and refitted section by section.
By Gaspard Magalie. Motor Wiring. Published at Thursday, December 28th 2017, 10:08:52 AM. A unipolar stepper motor has one winding with center tap per phase. Each section of windings is switched on for each direction of magnetic field. Since in this arrangement a magnetic pole can be reversed without switching the direction of current, the commutation circuit can be made very simple (e.g., a single transistor) for each winding. Typically, given a phase, the center tap of each winding is made common: giving three leads per phase and six leads for a typical two phase motor. Often, these two phase commons are internally joined, so the motor has only five leads.
By Olivier Constance. Electrical Wiring. Published at Thursday, December 28th 2017, 07:48:26 AM. V-groove panelization involves cutting a third of the board’s thickness from the top and bottom sides. The remaining part joins the separate boards and is then cut with a machine during the depaneling. This helps to reduce the stress on the PCB. One challenge with the V-groove method is that it is restrictive and cannot be used with PCBs that have overhanging components over the edges.
By Fleurette Nina. Motor Wiring. Published at Thursday, December 28th 2017, 05:54:53 AM. They are not controlled through a circuit board or ESC. They have to be connected to the arduino through a motor shield or custom built circuit. They are typically the most expensive. Stepper motors can have 4, 5, 6, or 8 wires. To use them with the arduino, understanding the internal wiring is absolutely necessary. The best way to learn the internal wiring is to assume no manual exists, and "discover" the internal wiring.
By Fleurette Nina. Electrical Wiring. Published at Thursday, December 28th 2017, 05:52:53 AM. To overcome these challenges, engineers may use SMT fixtures or the panelization techniques. Each of the two methods provides a carrier with standard dimensions and provisions for fitting, securing and supporting the irregular boards.
By Mailys Laurent. Electrical Wiring. Published at Thursday, December 28th 2017, 05:20:31 AM. There are different panelization and de-panelization methods depending on the application of the PCB, thickness, shape, component layout, type of edges, and other factors. The two popular methods are the V-groove panelization and the breakaway tab panelization. Each of these uses a different method to separate the boards from the main array and has its advantages and limitations.
By Cyrille Lothaire. Electrical Wiring. Published at Thursday, December 28th 2017, 05:00:05 AM. Manual removal of the tabs depends on the design and thickness of the board. Extra care is required since using some tools such as the hook-shaped blade to break the solid tabs between the boards can be challenging and inefficient. For example, if the blade rotates within the small clearance between the boards, it can easily take a bite out of the useful part of the PCB. Also, taping the blade-cutting edge leaves a small part of the tab protruding from the board.
By Adrienne Emmanuel. Car Wiring. Published at Thursday, December 28th 2017, 03:09:28 AM. Starter motors fail mostly due to overheating. They are placed in a hostile, hot environment and cannot be expected to last indefinitely. Another mode of failure is a shorted or open winding. This exhibits itself as a "dead spot" on the commutator. If a brush lands on a dead spot the motor wont turn at all. A third failure-mode is a faulty pinion engagement. Sometimes the pinion assembly gets stiff or stuck due to lack of lubrication or wear. Starter motor rebuilding or replacement is required for all of these problems.
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