By Gaspard Magalie. Car Wiring. Publised at Saturday, January 06th 2018, 02:18:13 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.
By Adrienne Emmanuel. Electrical Wiring. Published at Monday, January 01st 2018, 05:49:16 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 Fleurette Nina. Electrical Wiring. Published at Monday, January 01st 2018, 02:25:46 AM. When implementing a real-time system, we find a circular buffer critical whether we are using a DSP processor or a general purpose processor (GPP). However, with a GPP we may have to implement the circular buffer in software. As discussed in the previous section, with each new sample, we have to update the pointer which contains the address of the newest sample. With a circular buffer implemented in software, the programmer needs to take care of updating the buffer pointers after each read and write operation. When the pointer reaches the end of the buffer, the program must wrap the pointer back to the beginning of the buffer.
By Fleurette Nina. Motor Wiring. Published at Monday, January 01st 2018, 01:13:26 AM. The outrunner is already the standard motor in laser printers, copy machines, fax machines, scanners, blue ray players, cd players, where a very precise, constant speed is needed. It is also found in model helicopters, RC airplanes and other variable speed applications where there are light weight requirements. It is totally different than all other motors.
By France Barbara. Car Wiring. Published at Monday, January 01st 2018, 00:11:54 AM. To fit a spade terminal, slip the insulating cover over the wire and push it up the wire, out of the way. Use a wire stripper to remove about 1/8in. (3 mm) of insulation from the end of the wire. Lay the bare strands in the inner section of the connector. Use crimping pliers to tighten the two small tongues firmly around the insulated part of the wire. On the other side of the connector, push the wire strands back and down flat. Hold the connector blade upwards to avoid solder running into the spade part.
By Mailys Laurent. Motor Wiring. Published at Sunday, December 31st 2017, 23:11:28 PM. A stepper motor is a polyphase AC synchronous motor (see Theory below), and it is ideally driven by sinusoidal current. A full-step waveform is a gross approximation of a sinusoid, and is the reason why the motor exhibits so much vibration. Various drive techniques have been developed to better approximate a sinusoidal drive waveform: these are half stepping and microstepping.
By Fleurette Nina. Electrical Wiring. Published at Sunday, December 31st 2017, 22:41:48 PM. Since the finite-impulse-response (FIR) filtering is a common operation in DSP, we will continue our discussion based on examining the difference equation of an FIR filter. This simple example will show the typical properties of many DSP algorithms. After reviewing the problem of handling the incoming samples, we will discuss the circular buffering as an efficient solution to the problem.
By Olivier Constance. Electrical Wiring. Published at Sunday, December 31st 2017, 22:26:36 PM. 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.
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