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lecture 070 – resistors and inductors
lecture 070 – resistors and inductors

Series CA7 Motor Control Electrical Contactors from Sprecher + Schuh
Series CA7 Motor Control Electrical Contactors from Sprecher + Schuh

System Performance Advantages of Higher Density SRAMs
System Performance Advantages of Higher Density SRAMs

... article will address the different factors affecting system performance using Synchronous SRAMs. With ever-increasing system bandwidth requirements of the order of multigigabits/sec, SRAMs need to be optimized for higher density and performance. Today, Synchronous SRAMs are used in networking applic ...
Full-Text PDF
Full-Text PDF

... obtained from the expressions for Zreal and Zimag at different frequencies (Equation (6)), with M as a parameter changing with different angular positions. The irregularity in these curves is a consequence of different values of mutual inductance (M) between the coils. The position of the rotor can ...
Stray capacitances of single-layer solenoid air-core inductors
Stray capacitances of single-layer solenoid air-core inductors

... In EMC filtering applications, the frequencies of interest can range up to tens of megahertz. In order to minimize the effects of parasitic capacitances, inductors are usually made of a single wire wound as a single-layer solenoid, and the use of a conductive ferromagnetic core should be avoided. He ...
Ultracold Rubidium and Potassium System for Atom
Ultracold Rubidium and Potassium System for Atom

Technical Information
Technical Information

... indoor or outdoor installation under normal conditions without any accessory purchase or modification (NEMA 3R rating). Some specialized types are supplied standard in NEMA 12 enclosures. Enclosures for more severe locations, such as NEMA 4, 4X, and 12 are available on a special order basis. ...
The UK primary standard calorimeter for photon
The UK primary standard calorimeter for photon

... in terms of the offset resistance is described in detail by DuSautoy (1985) and Stoker and DuSautoy (1991). Other workers have used DC circuits, but these are electrically noisy, partly due to thermal EMFs; instead low-frequency double Kelvin AC bridge circuits are used in this work. Some of the com ...
A l - EN / Bilkent University
A l - EN / Bilkent University

AC Meters - UniMAP Portal
AC Meters - UniMAP Portal

...  Is a current-sensitive device – the pointer deflects up scale because of current flow through moving coil.  Most important applications: voltmeter and ammeter standard. ...
54 the technological and exploitative factors of local increase of
54 the technological and exploitative factors of local increase of

... germination through the thickness of the insulation (from the metal screen to the conductor) regardless of the design screen performance. Insulation resistance at the same time significant changes: more than an order of magnitude. The result of this change in the insulation resistance is to increase ...
RL Circuits
RL Circuits

Magnetism - Deakin University Blogs
Magnetism - Deakin University Blogs

... often expect magnets to attract any metal object rather than only iron and steel. Magnets have no effect on aluminium, brass, silver or copper. Students will often not know what metal common objects are made of, and, in fact, some substances that look like metal are coated plastic, and some plastic- ...
Electromagnetism in Transportation
Electromagnetism in Transportation

Chaos in magnetic flux ropes - Basic Plasma Science Facility
Chaos in magnetic flux ropes - Basic Plasma Science Facility

... the ropes collided [11]. There was no background plasma but probes were used to measure magnetic fields, temperature and density in the device and the results were compared with models. The first UCLA experiment, done over 20 years ago studied two ropes that were not kink unstable [12]. The ropes tw ...
Loading Considerations when Paralleling Transformers
Loading Considerations when Paralleling Transformers

... Transformers connected in parallel have the same voltage on the primary and the secondary winding terminals. The difference in the voltage between the primary and secondary windings is the turns ratio. For these terminal voltages to be the same for the paralleled transformers their impedance drop mu ...
lecture1423813026
lecture1423813026

The PIT MkV Pulsed Inductive Thruster / 7sS_
The PIT MkV Pulsed Inductive Thruster / 7sS_

... inductive division to such an extent that the remaining azimuthal field in the propellant is incapable of ionizing it completely. Rigorous minimization of "parasitic" inductance is clearly an important design requirement. Mission Requirements.In recent years, interplanetary missions have become clea ...
maxon DC motor
maxon DC motor

... excites less vibrations reducing the audible noise. From a control point of view there are some advantages as well. The uniform torque is simpler to control and the motor doesn't show the tendency to stop at preferred positions. ...
1 - mohtaram
1 - mohtaram

... A shunt wound generator has a full load output of 10 KW at a terminal voltage of 240V. The armature and shunt circuit resistances are 0.6 ohm and 160 ohms respectively. The mechanical and iron losses total 500W. Calculate the power in KW required at the driving shaft at full load and the efficiency. ...
Unit 13 - Magnetism
Unit 13 - Magnetism

... All electric motors, with uses as diverse as powering refrigerators, starting cars, and moving elevators, contain magnets. Generators, whether producing hydroelectric power or running bicycle lights, use magnetic elds. Recycling facilities employ magnets to separate iron from other refuse. Hundreds ...
Chapter-6 Electrical power and its Components I
Chapter-6 Electrical power and its Components I

Full-text
Full-text

A Review on Cuprate Based Superconducting Materials Including
A Review on Cuprate Based Superconducting Materials Including

... 1973, the critical temperature did not increase by even 1K for more than 10 years. Through the 1970s and 1980s, several types of experiments and theoretical discussions were carried out to discover ‘‘high-temperature superconductivity’’. It is important to remember what happened in this prehistoric ...
introEM
introEM

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Magnetic core

A magnetic core is a piece of magnetic material with a high permeability used to confine and guide magnetic fields in electrical, electromechanical and magnetic devices such as electromagnets, transformers, electric motors, generators, inductors, magnetic recording heads, and magnetic assemblies. It is made of ferromagnetic metal such as iron, or ferrimagnetic compounds such as ferrites. The high permeability, relative to the surrounding air, causes the magnetic field lines to be concentrated in the core material. The magnetic field is often created by a coil of wire around the core that carries a current. The presence of the core can increase the magnetic field of a coil by a factor of several thousand over what it would be without the core.The use of a magnetic core can enormously concentrate the strength and increase the effect of magnetic fields produced by electric currents and permanent magnets. The properties of a device will depend crucially on the following factors: the geometry of the magnetic core. the amount of air gap in the magnetic circuit. the properties of the core material (especially permeability and hysteresis). the operating temperature of the core. whether the core is laminated to reduce eddy currents.In many applications it is undesirable for the core to retain magnetization when the applied field is removed. This property, called hysteresis can cause energy losses in applications such as transformers. Therefore, 'soft' magnetic materials with low hysteresis, such as silicon steel, rather than the 'hard' magnetic materials used for permanent magnets, are usually used in cores.
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