By Olivier Constance. Electrical Wiring. Publised at Friday, January 12th 2018, 09:10:55 AM. This PCB, like almost all of my PCBs, is a four-layer board. In my opinion, it is not wise to restrict yourself to two layers unless you’re dealing with a very simple circuit or you really need to cut costs. The four-layer arrangement is beneficial in terms of routing and performance: routing, because via connections to internal planes almost completely eliminate power and ground traces; and performance, because the internal planes allow for low-resistance, low-inductance power and ground connections. The extra top-layer and bottom-layer real estate opened up by all the internal-plane connections come in very handy when you need to provide a generous copper area for improved thermal performance (for example, to make sure that your LDO or your motor driver doesn’t overheat and enter thermal shutdown).
By Dorian Yannic. Electrical Wiring. Published at Wednesday, January 03rd 2018, 15:08:21 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 Olivier Constance. Motor Wiring. Published at Wednesday, January 03rd 2018, 00:16:48 AM. It appears to be falling apart like a vacuum cleaner motor. You do not need to tear these apart. Look at these wikicommons pictures. Taking apart a CD player and finding the motor is fairly easy.Start by turning it upside down and removing the screws holding the bottom plate on.
By Dorian Yannic. Motor Wiring. Published at Tuesday, January 02nd 2018, 20:09:39 PM. 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.
By Cyrille Lothaire. Car Wiring. Published at Tuesday, January 02nd 2018, 20:07:55 PM. Brushes are used to create electrical contact to the commutator segments and when current is fed into two of the four brushes, it flows through all the loops of the armature and shoe windings and out the other two brushes. This creates a magnetic field around each loop. As the armature turns, the loop will move to a position where the current flow reverses. This constant reversal of current flow allows the armature and field coils to repel each other and spin the motor. The greater the current flowing in the coils, the greater the magnetic forces, and the greater the power of the motor.
By Claudine Nicolette. Car Wiring. Published at Tuesday, January 02nd 2018, 15:21:04 PM. Cars are filled with stuff that can make or break performance. The engine needs to be fed the proper amounts of air, fuel, and spark. The suspension and brakes must be in tip-top shape. The wheels and tires, transmission, cooling system, gauges—even the seats—must all function properly.
By Cyrille Lothaire. Motor Wiring. Published at Tuesday, January 02nd 2018, 14:41:34 PM. These are also known as canned motors. Two wires go into them. They often are directly connected to a battery. A switch turns them on. Higher voltages cause them to spin faster. Often geared down in toys, they are designed to spin fast. If turned on and forced to not spin, the motor will heat up, and may even burn up. The motor is made by copper wire covered with clear paint, and wound together in a ball. When the motor heats up too much, the paint turns into smoke, nearby copper wires connect, the motor becomes weaker, the motor heats up more, more smoke comes out, etc. The winding resistance keeps going down. Measure the winding resistance when the motor is new and measure again when there are problems.
By Claudine Nicolette. Car Wiring. Published at Monday, January 01st 2018, 13:12:01 PM. STARTER SOLENOID "Relay" — All cars are wired so that the batterys main cable connects to the starter motor windings "the thick cable is needed for large current flow, right?". This wire must be switched on and off, of course, and it would be costly and inefficient to route it through the ignition switch "not to mention the size of the switchs components required to carry such current!". Consequently, a relay is necessary.
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