By Olivier Constance. Electrical Wiring. Publised at Monday, February 19th 2018, 03:41:02 AM. The tab-route or breakaway tab method is suitable for PCBs with either similar or different designs, or where it is not possible or practical to use the V-grooves. The designer leaves a perforated tabs routing space between the different or similar boards, hence allowing for separation after processing.
By Fleurette Nina. Car Wiring. Published at Thursday, January 04th 2018, 01:54:35 AM. Both coils draw the plunger inward, causing it to pull the shift lever and engage the pinion gear. When the plunger is pulled into the coil all the way, the pinion fully engages the ring gear. When the ring gear is fully engaged, engine cranking begins. When the engine starts the hold-in coil will cut out and the plunger will move out, retracting the pinion and opening the starter switch.
By Dorian Yannic. Car Wiring. Published at Thursday, January 04th 2018, 01:24:43 AM. Push the wire into the connector so that the strands just protrude from the round end. Grip the cable, connector uppermost, in a vice or self-locking pliers, so that the connector rests on top of the vice and cannot slide down the wire when soldering. Inside a bullet connector. Apply solder on the top of the connector, and let it melt and run down inside. Trim off the protruding strands with wire cutters.
By Mailys Laurent. Motor Wiring. Published at Wednesday, January 03rd 2018, 23:58:29 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. Car Wiring. Published at Wednesday, January 03rd 2018, 15:37:45 PM. Use a 25-65 watt iron for most work, and a 150-250 watt one for large cables, or an 8 oz (225 g) gas-heated iron. Working safelyDisconnect both terminals of the battery before doing any work on wiring other than testing. Whenever you work on the car, watch for any part of the loom coming loose from its clips, for there is a risk of it getting trapped or burned. Always replace wiring in its clips.
By Dorian Yannic. Electrical Wiring. Published at Wednesday, January 03rd 2018, 15:08:21 PM. Manufacturers can use fixtures or panels to secure or frame fragile, thin, or oddly shaped PCBs. This allows them to easily fit the boards in the standard assembly, reflow, or automatic inspection machines. In addition to handling the irregular boards, the technologies enable the simultaneous processing of multiple boards as opposed to working on each board individually, hence reducing the production time and costs.
By Olivier Constance. Motor Wiring. Published at Wednesday, January 03rd 2018, 00:16:48 AM. Speed can be varied by either changing the voltage or pulsing the motor. Most computer controlled DC motors are pulsed. Pulses of a fixed voltage are sent to the motor, usually by an Electronic Speed Controller or ESC. A pulse of 1.5 ms causes no motion. Wider pulses cause faster spinning in one direction. Shorter pulses cause faster spinning in the opposite direction. Eventually, an overstressed ESC stops pulsing and turns one wire on and one wire off, depending on the direction.
By Dorian Yannic. Motor Wiring. Published at Tuesday, January 02nd 2018, 20:09:39 PM. Bipolar motors have a single winding per phase. The current in a winding needs to be reversed in order to reverse a magnetic pole, so the driving circuit must be more complicated, typically with an H-bridge arrangement "however there are several off-the-shelf driver chips available to make this a simple affair". There are two leads per phase, none are common.Static friction effects using an H-bridge have been observed with certain drive topologies.
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