By Claudine Nicolette. Car Wiring. Publised at Tuesday, January 02nd 2018, 15:21:04 PM. Label wires before cutting them when working on a section of the loom. Before you disconnect anything, make absolutely sure you know how to put it back. Number both sides of each connection with labels made of masking tape. If necessary, make drawings of cable routes and how clips fit. Use a craft knife or razor blade to cut away the wrapping from the damaged section. Take care not to cut into the plastic cable insulation.
By Fleurette Nina. Motor Wiring. Published at Thursday, September 21st 2017, 18:43:05 PM. Brushed DC motors rotate continuously when DC voltage is applied to their terminals. The stepper motor is known by its property to convert a train of input pulses (typically square wave pulses) into a precisely defined increment in the shaft position. Each pulse moves the shaft through a fixed angle. Stepper motors effectively have multiple "toothed" electromagnets arranged around a central gear-shaped piece of iron. The electromagnets are energized by an external driver circuit or a micro controller. To make the motor shaft turn, first, one electromagnet is given power, which magnetically attracts the gear teeth. When the gear teeth are aligned to the first electromagnet, they are slightly offset from the next electromagnet.
By Cyrille Lothaire. Electrical Wiring. Published at Sunday, September 17th 2017, 03:23:46 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 France Barbara. Electrical Wiring. Published at Saturday, September 16th 2017, 00:10:12 AM. In a demanding application, we may not have the time to continuously check the pointers to see if they have reached the end of the buffer and wrap them back to the beginning of the buffer when necessary. As a result, a DSP processor uses dedicated hardware to provide some fast circular buffers.This hardware implementation automatically checks the status of the pointers and updates them accordingly.
By Mailys Laurent. Motor Wiring. Published at Thursday, September 14th 2017, 20:19:13 PM. 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 Gaspard Magalie. Motor Wiring. Published at Monday, September 11th 2017, 19:50:47 PM. 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 Fleurette Nina. Motor Wiring. Published at Sunday, September 10th 2017, 11:18:59 AM. An additional limitation, often comparable to the effects of inductance, is the back-EMF of the motor. As the motor rotor turns, a sinusoidal voltage is generated proportional to the speed (step rate). This AC voltage is subtracted from the voltage waveform available to induce a change in the current.
By Cyrille Lothaire. Motor Wiring. Published at Saturday, September 09th 2017, 08:13:56 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.
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