By Madeleine Catherine. Diagram. Publised at Sunday, November 19th 2017, 21:57:33 PM. Circuits often require output devices to communicate their state to an user. Examples of electronic output devices include computer monitors, LCD alphanumeric panels (as on a calculator), small lamps or light-emitting diodes (LED), etc. Digilent boards include different output devices, but all of them include some number of individual LED, and seven-segment LED displays that can display the digits 0-9 in each digit position (each segment in the seven-segment display contains a single LED). LED are two-terminal semiconductor devices that conduct current in only one direction (from the anode to the cathode). The small LED chips are secured inside a plastic housing, and they emit light at a givenfrequency (RED, YELLOW, etc.) when a small electric current (typically 10mA to 25mA) flows through them.
By Lydie Honorine. Diagram. Publised at Sunday, November 19th 2017, 20:50:47 PM. The unloaded PCB appears green because thin sheets of green plastic have been applied to both sides (otherwise the PCB would appear pale yellow). Called solder masks, these sheets cover all exposed metal other than the component pads and holes so that errant solder can not inadvertently short (or electrically connect) the printed wires. All metal surfaces other than the exposed pads and holes (i.e., the wires) are underneath the solder mask. Not infrequently, blue or even red solder masks are used.
By Lydie Honorine. Car Wiring. Published at Friday, December 29th 2017, 11:17:46 AM. The electrical system of a car is a closed circuit with an independent power source the battery. It operates on a small fraction of the power of a household circuit. Current flows along a single cable from the battery to the component being powered, and back to the battery through the cars metal body. The body is connected to the earth terminal of the battery by a thick cable.
By Madeleine Catherine. Car Wiring. Published at Friday, December 29th 2017, 07:00:27 AM. If you have removed the body in preparation for installing a new one, you will now have easy access to all of the attachment points as well as the gauge panel and switches. At this point, you have a blank sheet of paper and can do anything that works best.
By Lydie Honorine. Car Wiring. Published at Friday, December 29th 2017, 06:24:32 AM. As we stated, always use closed terminals. If your terminals have the plastic cover, remove that. Always solder the terminal where the wire end is installed. Never crimp the terminal and expect the wire to stay there forever. It won’t.
By Valentine Sybille. Car Wiring. Published at Friday, December 29th 2017, 05:35:08 AM. Modern cars often need room for many wires in confined spaces. Some manufacturers now use printed circuits instead of bundles of wires, particularly at the rear of the instrument panel. Printed circuits are plastic sheets on which copper tracks have been "printed". Components are plugged directly into the tracks. A few modern cars have flexible printed circuits. The copper tracks are printed in ribbons of flexible plastic, which replace the whole wiring system.
By Alix Loane. Car Wiring. Published at Friday, December 29th 2017, 05:33:05 AM. On its downstroke, a piston draws air into the cylinder. On the compression stroke, the fuel injection system (depending on how it’s timed) sprays fuel into the combustion area, and the resulting cylinder pressure (and residual heat from previous firings) combusts the fuel/air mix, etc.
By Charlotte Myriam. Car Wiring. Published at Friday, December 29th 2017, 05:02:19 AM. Plan the route of the wires. There are some wires that should not come in close proximity to other wires. The radio wires must be kept clear of the ignition wires to reduce interference.
By Bertille Solange. Power. Published at Friday, December 29th 2017, 04:58:06 AM. Many of the new LDO regulators are optimized for low quiescent current (like 75 to 150 mA), and provide significant improvement over typical regulators which draw several milliamps.
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