By Jessica Mireille. Circuit. Publised at Monday, December 18th 2017, 14:08:09 PM. 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 Madeleine Catherine. Motor. Published at Saturday, December 30th 2017, 06:31:03 AM. Anytime there are turns of wire surrounding a magnetic material such as the iron in the motor’s stator, it will have an electrical property called inductance. Inductance describes the energy stored in a magnetic field anytime current passes through this coil of wire.
By Jessica Mireille. Power. Published at Saturday, December 30th 2017, 04:59:59 AM. Typical linear regulators usually have an output voltage specification that guarantees the regulated output will be within 5% of nominal. This level of accuracy is adequate for most applications.
By Alix Loane. Car Wiring. Published at Saturday, December 30th 2017, 04:37:00 AM. Wire and cable sizes are classified by the maximum amperage that they can carry safely. A complex network of wires runs through the car. To avoid confusion, each wire is colour coded (but only within the car: there is no national or international system of colour-coding).
By Charlotte Myriam. Diagram. Published at Saturday, December 30th 2017, 04:11:48 AM. Several different resistors are used on Digilent boards. Some are used to limit LED current, and some are used on inputs (like the button and switch circuits) to both limit the currents flowing to the main chip, and to help protect against electrostatic discharge (or ESD – more on this topic later). The resistors on the Digilent boards, like most resistors used in digital systems, are physically small because they will not encounter large voltages or currents. For these smaller resistors, the resistor value in Ohms is printed in microscopic numbers on the resistor body, not visible to the naked eye.
By Lydie Honorine. Car Wiring. Published at Saturday, December 30th 2017, 01:33:56 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 Alix Loane. Motor. Published at Saturday, December 30th 2017, 00:13:39 AM. Electrically, a real motor differs from an ideal one primarily by having a non-zero winding resistance. Also, the iron in the motor is subject to magnetic saturation, as well as having eddy current and hysteresis losses. Magnetic saturation sets a limit on current to torque proportionally while eddy current and hysteresis (iron losses) along with winding resistance (copper losses) cause motor heating.
By Alix Loane. Motor. Published at Friday, December 29th 2017, 20:40:03 PM. If more than one drive is being operated from the power supply this is not a problem since the other drive(s) will absorb this current for its needs, unless it is decelerating as well. For this case or for a single drive it may be necessary to place a voltage clamp across the power supply in the form of a Zener diode. The voltage of this diode must be greater than the maximum expected power supply voltage, yet low enough to protect the drive. A good choice would be either 82 volts or 91 volts as standard values.
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