By Fleurette Nina. Electrical Wiring. Publised at Saturday, December 30th 2017, 11:42:26 AM. PCBs with SMT on both sides and those with mixed TH and SMTs may start to flex and bow when in the reflow oven or selective soldering machine. For this reason, the maximum size for this type of board is usually smaller than the single-sided. Breaking out the boards manually can stress the board and components near the edges, the solder joints, or leave out rough stubs on the edges
By Gaspard Magalie. Car Wiring. Publised at Thursday, January 04th 2018, 14:42:03 PM. Relays are devices that utilize a central iron core fitted closely to the inside of a coil of wire. When the wire is energized the iron core will be drawn down the length of the coil, the direction dependent upon the direction of current flow. If the relays iron core is fitted with large, high current-carrying contacts it can be used as a high-current switch. Relays are used throughout cars for horns, electric fans, air conditioning clutches, etc. and the most important one is the starter solenoid.
By Mailys Laurent. Motor Wiring. Publised at Friday, January 05th 2018, 09:37:00 AM. 2 wires. Servomechanisms are designed to move to a spot and hold it is position. They are not designed to spin continuously. Used to position print heads in ink jet printers, plotters, scanners. Travel at set speeds. Go to a spot and stop. When stopped and still turned on, will attempt to hold it is position. Forcing it to move in this position can damage the motor. Typically is controlled by a circuit board that counts shadows with an LED and light sensor or has a resistor that changes value depending upon position. Often zooms to one side when powered on to figure out where it is at.
By Gaspard Magalie. Car Wiring. Published at Friday, January 12th 2018, 14:15:17 PM. Several modern cars have separate thin wires embedded in flat plastic strips. These strips are very compact, and are used mainly for accessories and relay controls that require little power.
By Cyrille Lothaire. Electrical Wiring. Published at Friday, January 12th 2018, 11:45:40 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 Olivier Constance. Electrical Wiring. Published at Friday, January 12th 2018, 10:58:16 AM. Splices may be used within 30cm of a termination device when attaching to the pigtail spare lead of a potted termination device, to splice multiple wires to a single wire, or to adjust the wire sizes so that they are compatible with the contact crimp barrel sizes.
By Olivier Constance. Electrical Wiring. Published at Friday, January 12th 2018, 09:10:55 AM. SMT fixtures are rigid PCB carriers that allow manufacturers to load single or multiple irregular boards, and then take them through the standard processing machines. This makes it possible to carry out tasks such as automatic mounting of electronic components, infra-red reflow soldering, wave soldering, automatic testing, etc.
By Olivier Constance. Car Wiring. Published at Friday, January 12th 2018, 07:48:11 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 Adrienne Emmanuel. Car Wiring. Published at Friday, January 12th 2018, 07:38:14 AM. Several modern cars have separate thin wires embedded in flat plastic strips. These strips are very compact, and are used mainly for accessories and relay controls that require little power.
By France Barbara. Electrical Wiring. Published at Friday, January 12th 2018, 07:36:02 AM. Reset pin may be used to generate a system reset of the IC. And while a reset may also be externally generated by issuing a command (referred to as a soft reset), to achieve a full reset it is recommended to use the nReset pin (or of course you can also cycle power). On the other hand, if this pin is not to be used then it is recommended that it is either left floating or tied to VDD via a series resistor of value ≥2 kΩ.
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