By France Barbara. Electrical Wiring. Publised at Sunday, February 11th 2018, 00:47:29 AM. Fixtures are more suited for the flexible circuit boards as well as the fragile and thin PCBs. However, each new board design requires its custom fixture which can take between three and four days for a manufacturer to produce and deliver. As such, using fixtures can add up the costs and time to produce the PCBs.
By Olivier Constance. Electrical Wiring. Publised at Monday, February 19th 2018, 05:58:07 AM. Sensirion provides detailed information on both the package outline and the land pattern. In fact, it is recommended, because the IC pad pitch is just 0.5 mm, that only one solder mask opening should be used for all four pads on one side. It is also suggested, when using solder paste printing, that a laser-cut stainless steel stencil with trapezoidal walls and with a stencil thickness of 0.1 or 0.125 mm should be used. See the images below. This information should be quite helpful for a PCB layout design team.
By Dorian Yannic. Electrical Wiring. Publised at Wednesday, November 22nd 2017, 13:04:57 PM. The datasheet goes on to say that "the nRESET pin is internally connected to VDD with a pull up resistor of 50 kΩ." So... why are there two options for how to configure the nReset pin when it is not being used? Why not just recommend that it should be left floating (since it is already pulled high internally)? And, if there are indeed technical reasons for when the pin should be externally pulled up to VDD (for better noise immunity, as an example) then let us know what those technical reasons are.
By France Barbara. Motor Wiring. Published at Friday, February 09th 2018, 10:50:14 AM. After the retaining ring is removed, the entire assembly that spins can be removed. There may be some resistance that feels like removing magnets from each other. Underneath the cup of all outrunner brushless motors is a series of coils. On some motors, between the coils, are hall effect probes. Hall effect probes detect the spinning magnetic field and provide a pulse out of the brushless motors to the electronics. From this pulse the electronics can precisely control the speed of the motor
By Cyrille Lothaire. Motor Wiring. Published at Friday, January 26th 2018, 19:25:31 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 Cyrille Lothaire. Electrical Wiring. Published at Wednesday, January 24th 2018, 21:46:51 PM. 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 Olivier Constance. Car Wiring. Published at Monday, January 22nd 2018, 10:14:47 AM. Ring terminal This alternative to the spadeterminal is used on heavier components. "Scotchlok" connector The "Scotchlok" connector splices two wires together, using asharp metal blade which pierces theinsulation. This is clamped using a pair ofpliers, and covered with a plastic clip.
By Dorian Yannic. Car Wiring. Published at Monday, January 22nd 2018, 02:43:27 AM. Joins in individual wires are usually made with crimp connectors. The colour on the sleeve of a connector denotes the size of wire it will take. The bared ends of each wire are pushed into opposite ends of the metal-lined plastic sleeve, and squeezed with crimping pliers. There are multiple sleeves or other special connectors where a wire branches off.
By France Barbara. Car Wiring. Published at Friday, January 19th 2018, 18:09:19 PM. Wires and bundles of wires are clipped to the bodywork to keep them out of the way. Where they run through a hole, the sharp edges are lined with a rubber grommet. Sometimes the loom is divided into sections joined by multi-pin plugs and sockets, so that it can be removed and refitted section by section.
By Mailys Laurent. Electrical Wiring. Published at Thursday, January 18th 2018, 03:27:31 AM. PCBs with SMT on both sides and those with mixed TH and SMTs may start to flex and bow when in the reflow oven or selective soldering machine. For this reason, the maximum size for this type of board is usually smaller than the single-sided. Breaking out the boards manually can stress the board and components near the edges, the solder joints, or leave out rough stubs on the edges
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