By Charlotte Myriam. Motor. Publised at Monday, December 18th 2017, 14:50:43 PM. What can be seen is there is not increase of the power output; the motor simply reaches its maximum power at a lower speed, all at the great expense of a four-fold increase in motor heating.
By Sasha Sara. Car Wiring. Published at Friday, February 09th 2018, 00:03:30 AM. You might need to add connectors to your wiring to make removal of certain components easy. Ignition boxes might come with simple connectors and you might want to replace those with better ones that might be more waterproof.
By Alix Loane. Motor. Published at Monday, January 29th 2018, 23:13:59 PM. 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 Madeleine Catherine. Motor. Published at Monday, January 29th 2018, 18:05:09 PM. At this point it is important to introduce the concept of overdrive ration. This is the ration between the power supply voltage and the motor’s rated voltage. An empirically derived maximum is 25:1, meaning the power supply voltage should never exceed 25 times the motor’s rated voltage or 32 times the square root of motor inductance. Below is a graph of measured iron losses for a 4A, 3V motor. Notice in Figure 16 how the iron losses range from insignificant to being the major cause of heating in the motor compared to a constant 12W copper loss (4A times 3V).
By Charlotte Myriam. Car Wiring. Published at Sunday, January 28th 2018, 14:00:15 PM. I cannot tell you how many teams have connected these wires thinking purple must go with purple. It does not. Note the location of each wire on both sides of the original connectors and identify them with markings before you cut off the old connector.
By Madeleine Catherine. Car Wiring. Published at Friday, January 26th 2018, 20:43:45 PM. As we stated, always use closed terminals. If your terminals have the plastic cover, remove that. Always solder the terminal where the wire end is installed. Never crimp the terminal and expect the wire to stay there forever. It won’t.
By Madeleine Catherine. Motor. Published at Friday, January 26th 2018, 03:18:35 AM. 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 Alix Loane. Motor. Published at Tuesday, January 23rd 2018, 22:56:20 PM. When using multiple drives from a common power supply, use individual supply and ground wires to each drive and return them to a common point back at the power supply. This is called a “star” power supply distribution; never use a “daisy-chain” power distribution, where the supply and ground wires for the next drives are picked up from the previous one.
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