By Alix Loane. Motor. Publised at Friday, December 29th 2017, 20:40:03 PM. Eddy current and hysteresis heating are collectively called iron losses. The former induces currents in the iron of the motor while the latter is caused by the re-alignment of the magnetic domains in the iron. You can think of this as “friction heating” as the magnetic dipoles in the iron switch back and forth. Either way, both cause the bulk heating of the motor. Iron losses are a function of AC current and therefore the power supply voltage.
By Bertille Solange. Motor. Publised at Monday, January 01st 2018, 05:05:03 AM. The effect of setting the motor current to twice the rated value. This abuses the motor because it will dissipate four times as much heat as setting the current to its proper value. The actual increase in low-speed torque is considerably less than double because of magnetic saturation of the motor iron.
By Alix Loane. Motor. Published at Friday, February 09th 2018, 07:11:13 AM. If one changes the power supply voltage, then a new family of speed-torque curves result. As an example, if the power supply voltage is doubled then a new curve is generated; the curve now has twice the torque at any given speed in region 2. Since power equals torque times speed, the motor now generates twice as much power as well.
By Bertille Solange. Motor. Published at Friday, February 09th 2018, 05:54:45 AM. It is recommended the motor current always be set at the rated value also to get the best microstep smoothness. Setting the current higher degrades the linearity of the motor and causes microstep bunching and attendant low-speed vibration.
By Sasha Sara. Car Wiring. Published at Friday, February 09th 2018, 01:15:05 AM. As for the gauges, new designs are coming out all the time. If you have a hard time seeing your gauges at night, then the new brightly lit types might be the thing to now install. According to Dick, it is important to use a high-quality tachometer. Accuracy of rpm is very important to choosing the right gear.
By Sasha Sara. Car Wiring. Published at Friday, February 09th 2018, 00:03:30 AM. You can fold the bare wire end double to fill the terminal hole. Then solder the terminal and wire. Use shrink wrap to encase the connections. This serves two purposes, one to insulate the terminal and the other is to add support to the end of the wire so that it will be less likely to bend and break.
By Alix Loane. Motor. Published at Monday, January 29th 2018, 23:13:59 PM. Ideally, you will be connecting motors per an installation drawing. In that case, it’s a matter of correctly identifying the motor leads by number and connecting them per the drawing. Don’t try to “wing it” when replacing a motor, working with OEM equipment, or installing a motor when such drawings have been provided. But there’s a catch. We’ll get to that in a moment.
By Madeleine Catherine. Motor. Published at Monday, January 29th 2018, 18:05:09 PM. The power output decreases with speed because of the constant-torque loss due to detent torque and other losses. The same effect causes a slight decrease in torque with speed in the constant torque region as well. Finally, there is a rounding of the torque curve at the corner speed because the drive gradually transitions from being a current source to being a voltage source. The drive limits current to the motor below the corner speed and thus is a current source. Above the corner speed, the motor’s inductive reactance limits the current and the drive becomes a voltage source as it applies all of the power supply voltage to the motor.
By Charlotte Myriam. Car Wiring. Published at Sunday, January 28th 2018, 14:00:15 PM. t is not a good idea to use push-on terminals. These can loosen and come off. If your gauge or other electrical components have those types of male terminals, you can drill a small hole in the blade and solder your wire to the terminal, then use shrink wrap to cover the connection. Remember to slide the shrink wrap over the wire before soldering.
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