By Cyrille Lothaire. Car Wiring. Publised at Saturday, January 06th 2018, 06:48:56 AM. Also look for grommets that have come out of their holes. The sharp edge of the hole will soon chafe through wire insulation and cause a short circuit. Whenever you pull a connection apart, look for corrosion which might cause bad contact. If necessary, clean contacting metal surfaces with a fine file or emery cloth.
By Fleurette Nina. Electrical Wiring. Published at Saturday, August 19th 2017, 09:12:34 AM. 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 Dorian Yannic. Electrical Wiring. Published at Wednesday, August 16th 2017, 08:13:28 AM. It’s always good to be cognizant of trace lengths when you’re laying out a parallel bus, though at moderate frequencies it is nothing to stress about. The propagation time for a signal traveling through a trace is maybe 150 picoseconds/inch. So if you have two traces with a length mismatch of one inch, one signal will arrive 150 ps after the other signal. If your signals are transitioning at a frequency whose corresponding period is much greater than 150 ps, this one-inch mismatch won’t cause problems. Even at 100 MHz (which is pretty fast for a parallel bus), the period is 10 ns, i.e., ~67 times larger than the time-of-arrival discrepancy for a one-inch mismatch.
By Dorian Yannic. Electrical Wiring. Published at Sunday, August 13th 2017, 05:49:48 AM. Care should be taken when depaneling the perforated-tab PCB array; otherwise, an incorrect method will splinter or tear the solder-mask or active surface layer. The ideal breakout method should not cause any damage to the board or transfer stress from the PCB surface to the components.
By Olivier Constance. Car Wiring. Published at Wednesday, August 09th 2017, 01:55:58 AM. 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 Olivier Constance. Car Wiring. Published at Friday, August 04th 2017, 00:40:38 AM. STARTER SOLENOID "Relay" — All cars are wired so that the batterys main cable connects to the starter motor windings "the thick cable is needed for large current flow, right?". This wire must be switched on and off, of course, and it would be costly and inefficient to route it through the ignition switch "not to mention the size of the switchs components required to carry such current!". Consequently, a relay is necessary.
By Gaspard Magalie. Electrical Wiring. Published at Sunday, July 30th 2017, 15:57:48 PM. 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 Mailys Laurent. Car Wiring. Published at Sunday, July 23rd 2017, 14:52:31 PM. Cable sizes are given by two numbers. The first one is the number of strands. The second (which is always the same in car wiring) is the diameter of each strand in millimetres. Twisting wires together and fitting spade terminals twist bare ends together and solder them.Cover the joint with insulating tape. Tag connectors are closedround the bare wire withpliers, then soldered. A spade terminal is easy to disconnect andreconnect. Methods of joining, wires To connect two wires, use a wire stripper to remove about in. (19 mm) of insulation from each wire.
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