By Claudine Nicolette. Electrical Wiring. Publised at Thursday, November 30th 2017, 15:12:14 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 Mailys Laurent. Motor Wiring. Published at Thursday, January 11th 2018, 00:05:55 AM. A unipolar stepper motor has one winding with center tap per phase. Each section of windings is switched on for each direction of magnetic field. Since in this arrangement a magnetic pole can be reversed without switching the direction of current, the commutation circuit can be made very simple (e.g., a single transistor) for each winding. Typically, given a phase, the center tap of each winding is made common: giving three leads per phase and six leads for a typical two phase motor. Often, these two phase commons are internally joined, so the motor has only five leads.
By Dorian Yannic. Electrical Wiring. Published at Wednesday, January 10th 2018, 17:48:38 PM. In a demanding application, we may not have the time to continuously check the pointers to see if they have reached the end of the buffer and wrap them back to the beginning of the buffer when necessary. As a result, a DSP processor uses dedicated hardware to provide some fast circular buffers.This hardware implementation automatically checks the status of the pointers and updates them accordingly.
By Adrienne Emmanuel. Motor Wiring. Published at Wednesday, January 10th 2018, 10:58:15 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 Mailys Laurent. Motor Wiring. Published at Wednesday, January 10th 2018, 10:33:59 AM. Stepper motors are like a servo motor in that they move to a spot and hold their position. But they can also spin like a DC and Brushless Motor. They can not hold their position as strongly as a servo motor, and they can not spin as fast as a brushed or brushless motor.
By Adrienne Emmanuel. Electrical Wiring. Published at Wednesday, January 10th 2018, 09:27:23 AM. However, the SMT components and the traces must be at least 3.00 mm from the perforation holes. This prevents the damage to the PCB or components which can occur due to surface stress and splinter when separating the boards. One drawback with this method is that it may leave some unwanted board protrusions on the edges.
By Claudine Nicolette. Electrical Wiring. Published at Wednesday, January 10th 2018, 05:08:28 AM. The ease of loading and unloading the PCBs, as well as the ability to handle multiple PCBs, are important in high production lines. In addition, fixtures should provide thermal protection to the heat sensitive areas of the PCB.
By Fleurette Nina. Car Wiring. Published at Tuesday, January 09th 2018, 21:34:30 PM. If this does not blow a fuse the wiring overheats and melts insulation, perhaps starting a fire. A similar result can come from fitting accessories incorrectly, or if power demand is too high for the size of the wire being used. After many years, insulation may become hard and brittle, particularly where it is exposed to heat, as in the engine bay. Sections, or all of the loom, may need replacing.
Nolanwebdev - Wiring Diagram Images Collection
Copyright © 2003 - 2018 Domain Media. All sponsored products, company names, brand names, trademarks and logos arethe property of their respective owners.