By Bertille Solange. Motor. Publised at Monday, January 01st 2018, 05:05:03 AM. The easiest factor in choosing a power supply is its current rating, which is based on your motor ratings. A motor control will always draw less than 2/3 of the motor’s rated current when it is parallel (or half-winding) connected and 1/3 of the motor’s rated current when it is series (or full-winding) connected. That is to say, a 6 amp per phase motor will require a 4 amp power supply when wired in parallel and a 2 amp power supply when wired in series. If multiple motors and drives are used, add the current requirements of each to arrive at the total power supply current rating.
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. Power. Published at Friday, December 29th 2017, 04:58:06 AM. The LDO regulator is best suited for battery-powered applications, because the lower dropout voltage translates directly into cost savings by reducing the number of battery cells required to provide a regulated output voltage. If the input-output voltage differential is low (like 1V to 2V) the LDO is more efficient than a Standard regulator because of reduced power dissipation resulting from the load current multiplied times the input-output voltage differential.
By Alix Loane. Motor. Published at Thursday, December 28th 2017, 16:31:25 PM. In the previous section it was shown that motor torque varies inversely with speed. This then is the motor’s natural speed-torque curve. Below a certain speed, called the corner speed, current would rise above the motor’s rated current, ultimately to destructive levels as the motor’s speed is reduced further.
By Madeleine Catherine. Circuit. Published at Thursday, December 28th 2017, 09:59:36 AM. A capacitor is a device that stores energy in the form of voltage. The most common form of capacitors is made of two parallel plates separated by a dielectric material. Charges of opposite polarity can be deposited on the plates, resulting in a voltage V across the capacitor plates. Capacitance is a measure of the amount of electrical charge required to build up one unit of voltage across the plates.
By Jessica Mireille. Circuit. Published at Thursday, December 28th 2017, 09:47:17 AM. Since single-layer/single-sided PCBs only have their various circuits and electrical components soldered onto one side, they are easy to design and manufacture. This popularity means that they can be purchased at a low-cost, especially for high-volume orders. The low-cost, high volume model means they are commonly used for a variety of applications, including calculators, cameras, radio and stereo equipment, solid state drives, printers and power supplies.
By Valentine Sybille. Car Wiring. Published at Thursday, December 28th 2017, 08:06:34 AM. It just takes a little more time to duplicate your wiring into a spare wiring harness. Make two or three if you like, the parts are very inexpensive. Also keep spare switches on hand in your race trailer so that if one breaks or fails to function, you’ll be able to replace it quickly.
By Madeleine Catherine. Car Wiring. Published at Thursday, December 28th 2017, 04:52:06 AM. It just takes a little more time to duplicate your wiring into a spare wiring harness. Make two or three if you like, the parts are very inexpensive. Also keep spare switches on hand in your race trailer so that if one breaks or fails to function, you’ll be able to replace it quickly.
By Bertille Solange. Motor. Published at Thursday, December 28th 2017, 02:57:57 AM. A step motor is a constant output power transducer, where power is defined as torque multiplied by speed. This means motor torque is the inverse of motor speed. To help understand why a step motor’s power is independent of speed, we need to construct (figuratively) an ideal step motor.
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