By Charlotte Myriam. Circuit. Publised at Friday, December 01st 2017, 09:55:05 AM. Physical circuits are constructed of real, physical devices. They can be inspected, tested, and modified. They consume electric power when energized, and they can function properly and do some meaningful work, or they can malfunction and create serious hazards to health and property. Even small circuits that are quickly and easily constructed still take time and money to build, and they can take a very long time to perfect.
By Alix Loane. Circuit. Published at Friday, February 09th 2018, 08:51:28 AM. Voltage and current sources can be independent or dependent. Their respective circuit symbols. Independent sources are usually shown as a circle while dependent sources are usually shown as a diamond-shape. Independent sources can have a DC output or a functional output; some examples are a sine wave, square wave, impulse, and linear ramp. Dependent sources can be used to implement a voltage or current which is a function of some other voltage or current in the circuit. Dependent sources are often used to model active circuits that are used for signal amplification.
By Alix Loane. Motor. Published at Friday, February 09th 2018, 07:11:13 AM. 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 Bertille Solange. Motor. Published at Friday, February 09th 2018, 05:54:45 AM. The result now is a two-part speed-torque curve which features constant torque from zero speed until it intersects the motor’s natural load line, called the corner speed, beyond which the motor is in the constant power region.
By Sasha Sara. Car Wiring. Published at Friday, February 09th 2018, 01:15:05 AM. The starter motor has its own heavy cable, direct from the battery. The ignition circuit furnishes the high-tension impulses to the sparkplugs; and the charging system includes the generator, which recharges the battery. All the other circuits are called ancillary (subsidiary) circuits.
By Sasha Sara. Car Wiring. Published at Friday, February 09th 2018, 00:03:30 AM. The sudden surge of high current in a short circuit makes the fuse wire melt, or "blow", breaking the circuit. When this happens, see if there is a short circuit or a disconnection, then install a new fuse of the correct amperage rating.
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. 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.
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