By Cyrille Lothaire. Electrical Wiring. Publised at Thursday, December 28th 2017, 05:00:05 AM. 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 France Barbara. Car Wiring. Published at Monday, January 01st 2018, 00:11:54 AM. STARTER MOTOR — This is a powerful electric motor that engages the cars flywheel in order to spin the crankshaft. As in all electric motors, the starter is composed of windings of wire that form loops, ending at the commutator segments "remember these from the generator". The armature coils are mounted on the motors central shaftsupported with bearings and the field coils are formed into four or more "shoes", placed inside the steel frame of the starter.
By Mailys Laurent. Motor Wiring. Published at Sunday, December 31st 2017, 23:11:28 PM. Parts of the motor are often attached to a circuit board. Magnets are attached on the inside of the can that spins with the shaft .. sort of like a spinning umbrella. All brushless motors have a spinning umbrella. Inside the umbrella is a permanent magnet. It looks like one continuous round magnet. However it is more like series of magnets.
By Fleurette Nina. Electrical Wiring. Published at Sunday, December 31st 2017, 22:41:48 PM. Manual removal of the tabs depends on the design and thickness of the board. Extra care is required since using some tools such as the hook-shaped blade to break the solid tabs between the boards can be challenging and inefficient. For example, if the blade rotates within the small clearance between the boards, it can easily take a bite out of the useful part of the PCB. Also, taping the blade-cutting edge leaves a small part of the tab protruding from the board.
By Olivier Constance. Electrical Wiring. Published at Sunday, December 31st 2017, 22:26:36 PM. 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 France Barbara. Electrical Wiring. Published at Sunday, December 31st 2017, 21:11:16 PM. Panelization is the arranging of arrays of multiple PCBs onto a single substrate that fits in the standard processing machine. A panel may hold multiple boards with similar or different sizes and shapes. This method is faster and less costly compared to the fixtures, which require a custom carrier for every new PCB design.
By Fleurette Nina. Electrical Wiring. Published at Sunday, December 31st 2017, 17:25:19 PM. There are different panelization and de-panelization methods depending on the application of the PCB, thickness, shape, component layout, type of edges, and other factors. The two popular methods are the V-groove panelization and the breakaway tab panelization. Each of these uses a different method to separate the boards from the main array and has its advantages and limitations.
By France Barbara. Motor Wiring. Published at Sunday, December 31st 2017, 11:07:30 AM. The five wires coming off the circuit board are the same as those coming off the ESC attached to the brushed dc motor and the servo motor circuit board "2 for power in and 3 go to the arduino". The pulses mean the same as the brushless dc motor. The only difference is that at maximum RPM, there are still pulses. There is not one long pulse like the brushed dc motor. The only physical difference is that there are three wires into the motor you may not be able to see them when it is mounted on a circuit board.
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