By Olivier Constance. Electrical Wiring. Publised at Friday, January 12th 2018, 09:10:55 AM. 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 Claudine Nicolette. Motor Wiring. Published at Wednesday, February 14th 2018, 13:26:18 PM. A stepper motor is a polyphase AC synchronous motor (see Theory below), and it is ideally driven by sinusoidal current. A full-step waveform is a gross approximation of a sinusoid, and is the reason why the motor exhibits so much vibration. Various drive techniques have been developed to better approximate a sinusoidal drive waveform: these are half stepping and microstepping.
By Fleurette Nina. Car Wiring. Published at Wednesday, February 14th 2018, 07:06:57 AM. When the clutch pedal is released, the thrust bearing is withdrawn and the diaphragm-spring load once again clamps the driven plate to the flywheel to resume the transmission of power. Some cars have a hydraulically operated clutch. Pressure on the clutch pedal inside the car activates a piston in a master cylinder, which transmits the pressure through a fluid-filled pipe to a slave cylinder mounted on the clutch housing. The slave-cylinder piston is connected to the clutch release arm.
By Adrienne Emmanuel. Motor Wiring. Published at Wednesday, February 14th 2018, 06:58:56 AM. Identical model motors vary, so each needs to be calibrated by banging against some edge ... think of the banging noise when an inkjet printer is turned on. Servo motors are good for robot wheels that have to turn a certain distance then stop. They are good for robots that have to balance themselves somehow. Auto pilots can use these to navigate a hallway. They are not good for spinning propellers like brushed dc motors and brushless motors.
By Adrienne Emmanuel. Car Wiring. Published at Tuesday, February 13th 2018, 20:19:44 PM. 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. Car Wiring. Published at Tuesday, February 13th 2018, 18:46:51 PM. The starter solenoid has very large contacts to carry the batterys full current. Its wire coil is actuated by a smaller current from the ignition switch, at which time the iron core slams down to make contact and turn on the starter motor. Most non-Ford starter motors employ a solenoid built into the motor itself. This type of solenoid not only provides the motors electrical power but also mechanically engages the starters drive gear onto the flywheel.
By Adrienne Emmanuel. Motor Wiring. Published at Tuesday, February 13th 2018, 18:31:54 PM. A servomotor is a specific type of motor that is combined with a rotary encoder or a potentiometer to form a servomechanism. This assembly may in turn form part of another servomechanism. A potentiometer provides a simple analog signal to indicate position, while an encoder provides position and usually speed feedback, which by the use of a PID controller allow more precise control of position and thus faster achievement of a stable position (for a given motor power). Potentiometers are subject to drift when the temperature changes whereas encoders are more stable and accurate.
By Olivier Constance. Motor Wiring. Published at Tuesday, February 13th 2018, 11:01:01 AM. 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.
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