By Olivier Constance. Car Wiring. Publised at Monday, January 22nd 2018, 10:14:47 AM. If this does not blow a fuse the wiring overheats and melts insulation, perhaps starting a fire. A similar result can come from fitting accessories incorrectly, or if power demand is too high for the size of the wire being used. After many years, insulation may become hard and brittle, particularly where it is exposed to heat, as in the engine bay. Sections, or all of the loom, may need replacing.
By Fleurette Nina. Electrical Wiring. Published at Sunday, December 31st 2017, 17:25:19 PM. The datasheet goes on to say that "the nRESET pin is internally connected to VDD with a pull up resistor of 50 kΩ." So... why are there two options for how to configure the nReset pin when it is not being used? Why not just recommend that it should be left floating (since it is already pulled high internally)? And, if there are indeed technical reasons for when the pin should be externally pulled up to VDD (for better noise immunity, as an example) then let us know what those technical reasons are.
By France Barbara. Motor Wiring. Published at Sunday, December 31st 2017, 11:07:30 AM. The motor can be directly pulsed by the arduino. The arduino can also supply power to the motor, but normally this is only a good idea for demonstration purposes. The arduino has a very weak power supply, and attempting to power a motor through it can destroy the arduino. Furthermore, the arduino may not be able to supply the exact correct maximum voltage. For this reason, an ESC is placed between the arduino and the motor.
By Gaspard Magalie. Motor Wiring. Published at Sunday, December 31st 2017, 07:42:08 AM. Brushless inrunners are very similar from the outside to a brushed DC motor in terms of size. They are usually mounted on a circuit board like a servo motor with a gear box. They spin very fast and have to be geared down like a brushed dc motor. They are different than a brushed dc motor in that they are stronger, more efficient and last longer. They can be matched to a wider variety of propellers or loads by adjusting the gearing.
By Mailys Laurent. Motor Wiring. Published at Sunday, December 31st 2017, 05:19:37 AM. Positioning servomechanisms were first used in military fire-control and marine navigation equipment. Today servomechanisms are used in automatic machine tools, satellite-tracking antennas, remote control airplanes, automatic navigation systems on boats and planes, and antiaircraft-gun control systems. Other examples are fly-by-wire systems in aircraft which use servos to actuate the aircraft control surfaces, and radio-controlled models which use RC servos for the same purpose. Many autofocus cameras also use a servomechanism to accurately move the lens. A hard disk drive has a magnetic servo system with sub-micrometre positioning accuracy. In industrial machines, servos are used to perform complex motion, in many applications.
By Dorian Yannic. Motor Wiring. Published at Sunday, December 31st 2017, 04:44:25 AM. Brushless outrunners are always built on a circuit board. This makes them cheaper. The circuit board for this CD motor has no electronics on it. A ribbon cable attaches 11 wires to another controller circuit board. But often the controller is built onto the same circuit board. The circuit boards interface with a controller in two ways.
By Fleurette Nina. Electrical Wiring. Published at Sunday, December 31st 2017, 02:18:44 AM. This PCB, like almost all of my PCBs, is a four-layer board. In my opinion, it is not wise to restrict yourself to two layers unless you’re dealing with a very simple circuit or you really need to cut costs. The four-layer arrangement is beneficial in terms of routing and performance: routing, because via connections to internal planes almost completely eliminate power and ground traces; and performance, because the internal planes allow for low-resistance, low-inductance power and ground connections. The extra top-layer and bottom-layer real estate opened up by all the internal-plane connections come in very handy when you need to provide a generous copper area for improved thermal performance (for example, to make sure that your LDO or your motor driver doesn’t overheat and enter thermal shutdown).
By Olivier Constance. Car Wiring. Published at Sunday, December 31st 2017, 00:36:48 AM. Push a screwdriver blade through the grommet carefully to enlarge it for the new cables, taking care not to damage insulation on existing wires. If you pass a cable through a new hole, fit the hole with a grommet. To pass wires up door pillars or behind trim, tape them to a piece of fairly stiff wire, poke it carefully behind the trim or up the pillar, and pull it through at the far end, bringing the wire with it.
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