ASSIGNMENT MEELC303 1 A 1500 nF capacitor is connected in
... 1 Find the e.m.f. induced in a coil of 200 turns when there is a change of flux of 30mWb linking with it in 40 ms. [_150 V] 2 An e.m.f. of 25V is induced in a coil of 300 turns when the flux linking with it changes by 12 mWb. Find the time, in milliseconds, in which the flux makes the change. [144 m ...
... 1 Find the e.m.f. induced in a coil of 200 turns when there is a change of flux of 30mWb linking with it in 40 ms. [_150 V] 2 An e.m.f. of 25V is induced in a coil of 300 turns when the flux linking with it changes by 12 mWb. Find the time, in milliseconds, in which the flux makes the change. [144 m ...
RC and RL Circuits
... Calculate the phase shift at this frequency f = (tan-1(Im(H(w)/Re(H(w)). Build the circuit and find the frequency for half power. Use the ‘scope to find the phase shift at that frequency and compare with calculations. (Note: To find the phase shift, find the time delay, Dt, between equivalent zero c ...
... Calculate the phase shift at this frequency f = (tan-1(Im(H(w)/Re(H(w)). Build the circuit and find the frequency for half power. Use the ‘scope to find the phase shift at that frequency and compare with calculations. (Note: To find the phase shift, find the time delay, Dt, between equivalent zero c ...
ELECTRICAL QUANTITIES
... Many physical systems with one energy-storage element can be described adequately by first-order integro-differential equations. The general procedure for determining the natural behaviour of a linear system is:1. Write the governing integro-differential equation. 2. Reduce this to a homogeneous dif ...
... Many physical systems with one energy-storage element can be described adequately by first-order integro-differential equations. The general procedure for determining the natural behaviour of a linear system is:1. Write the governing integro-differential equation. 2. Reduce this to a homogeneous dif ...
Beware of Zero-Crossover Switching of Transformers
... saturable, highly-inductive loads is by use of a peak voltage turn-on device. Turn-on at peak voltage results in minimal surge, if indeed any surge is present at all. Zero-crossover SSRs are excellent switches for resistive capacitive, and slightly inductive loads. Even so, inrush current must be ta ...
... saturable, highly-inductive loads is by use of a peak voltage turn-on device. Turn-on at peak voltage results in minimal surge, if indeed any surge is present at all. Zero-crossover SSRs are excellent switches for resistive capacitive, and slightly inductive loads. Even so, inrush current must be ta ...
Transformers
... alter the amount of wire around the first C –Core to see if this affected the voltage as well. I would keep it as a constant number of turns though out the experiment whilst changing the number of turns around the second C-Core. I believe it would be interesting to find out if a greater number of tu ...
... alter the amount of wire around the first C –Core to see if this affected the voltage as well. I would keep it as a constant number of turns though out the experiment whilst changing the number of turns around the second C-Core. I believe it would be interesting to find out if a greater number of tu ...
File
... changing directions. Alternating current is mostly used today to transmit power on power lines. In Canada the frequency at which the current alternates is 60 Hertz. Some other countries use 50 Hertz as the standard frequency. ...
... changing directions. Alternating current is mostly used today to transmit power on power lines. In Canada the frequency at which the current alternates is 60 Hertz. Some other countries use 50 Hertz as the standard frequency. ...
Magnetism - a magnet has polarity. It has 2 ends. A north seeking
... Most of today’s energy sold is in the form of AC because it can easily be transformed from one voltage to another. Power is transmitted at high voltages and low current without much energy loss (heating of wire) because it can be stepped down from the plant to many cities, to a city, to the househol ...
... Most of today’s energy sold is in the form of AC because it can easily be transformed from one voltage to another. Power is transmitted at high voltages and low current without much energy loss (heating of wire) because it can be stepped down from the plant to many cities, to a city, to the househol ...
Phy 440 Lab 5: RC and RL Circuits
... In this lab we study a simple circuit with a resistor and a capacitor from two points of view, one in time and the other in frequency. The viewpoint in time is based on a differential equation. The equation shows that the RC circuit is an approximate integrator or approximate differentiator. The vie ...
... In this lab we study a simple circuit with a resistor and a capacitor from two points of view, one in time and the other in frequency. The viewpoint in time is based on a differential equation. The equation shows that the RC circuit is an approximate integrator or approximate differentiator. The vie ...
Discrimination of Metal Differences Using Electromagnetic
... Non magnetic (non ferrous) parts have differences in electrical conductivity. Magnetic (ferrous) materials, however, have differences in both electrical conductivity and magnetic permeability, although the permeability differences generally have a greater effect. When sorting for differences in dime ...
... Non magnetic (non ferrous) parts have differences in electrical conductivity. Magnetic (ferrous) materials, however, have differences in both electrical conductivity and magnetic permeability, although the permeability differences generally have a greater effect. When sorting for differences in dime ...
EUP3412 1.5A/1.5MHz, Synchronous Step-Down Converter with Soft Start
... Input Undervoltage Lockout The undervoltage lockout circuit prevents device misoperation at low input voltages. It prevents the converter from turning on the switch or rectifier MOSFET with undefined conditions. Inductor Selection The EUP3412 typically uses a 2.2uH output inductor. Larger or smaller ...
... Input Undervoltage Lockout The undervoltage lockout circuit prevents device misoperation at low input voltages. It prevents the converter from turning on the switch or rectifier MOSFET with undefined conditions. Inductor Selection The EUP3412 typically uses a 2.2uH output inductor. Larger or smaller ...
Gary`s Physics Problem In college physics we learned that the
... Also, referring to the blue trace of Fig. 3, when I put the toroid around all 3 wires, I expected to see a significantly higher voltage when the coil is located near either the hot or neutral leads than when furthest away from both. But in this case I saw only a very small voltage (pretty much zero ...
... Also, referring to the blue trace of Fig. 3, when I put the toroid around all 3 wires, I expected to see a significantly higher voltage when the coil is located near either the hot or neutral leads than when furthest away from both. But in this case I saw only a very small voltage (pretty much zero ...
a high-efficiency mosfet transformerless inverter for
... (using a method called “ac decoupling”), avoiding the presence of high-frequency voltage components across it and preventing the reactive power exchange between the filter inductors and cin during the zero voltage state, thus increasing efficiency [2]. The converter operates as it follows during the ...
... (using a method called “ac decoupling”), avoiding the presence of high-frequency voltage components across it and preventing the reactive power exchange between the filter inductors and cin during the zero voltage state, thus increasing efficiency [2]. The converter operates as it follows during the ...
Inductor
An inductor, also called a coil or reactor, is a passive two-terminal electrical component which resists changes in electric current passing through it. It consists of a conductor such as a wire, usually wound into a coil. When a current flows through it, energy is stored temporarily in a magnetic field in the coil. When the current flowing through an inductor changes, the time-varying magnetic field induces a voltage in the conductor, according to Faraday’s law of electromagnetic induction, According to Lenz's law the direction of induced e.m.f is always such that it opposes the change in current that created it. As a result, inductors always oppose a change in current, in the same way that a flywheel oppose a change in rotational velocity. Care should be taken not to confuse this with the resistance provided by a resistor.An inductor is characterized by its inductance, the ratio of the voltage to the rate of change of current, which has units of henries (H). Inductors have values that typically range from 1 µH (10−6H) to 1 H. Many inductors have a magnetic core made of iron or ferrite inside the coil, which serves to increase the magnetic field and thus the inductance. Along with capacitors and resistors, inductors are one of the three passive linear circuit elements that make up electric circuits. Inductors are widely used in alternating current (AC) electronic equipment, particularly in radio equipment. They are used to block AC while allowing DC to pass; inductors designed for this purpose are called chokes. They are also used in electronic filters to separate signals of different frequencies, and in combination with capacitors to make tuned circuits, used to tune radio and TV receivers.