Magnetic materials for electrical devices trading,earthquake emergency kits home built,emf detector ghosts,american gangster movie 2013 - PDF Review

Scientists at the University of Adelaide in Australia have used two emerging magnetic materials to make electric motors and generators more efficient. They have used the new electric motors to develop patented highly efficient water pump systems with potential widespread application. The University of Adelaide researchers have used two emerging magnetic materials—called soft magnetic composite (SMC) and amorphous magnetic material (AMM)—and two novel production techniques to form the ‘stator’ within the electric motor or generator.
Both new techniques have been successfully developed and tested with small prototypes, showing substantial energy efficiency gains—up to 90% energy efficiency in small motors compared to 60-70% in conventional motors. Using SMC material and working with industry partner Intelligent Electric Motor Solutions (IEMS) Pty Ltd, the researchers have developed motors that operate at low speed with high power output and with low production costs, suitable for swimming pool and similar pumps. The research teams have developed patented prototypes, using both technologies, and testing facilities and are now looking for further investment partners to commercialize the technology. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Optical laser flash (red) destroys the electronic order (blue) in magnetite and, within one trillionth of a second, switches the state of the material from insulating to conducting. As part of an international team of researchers, scientists at the Helmholtz Center Berlin (HZB) have observed the switching mechanism from a non-conducting to a conducting state in iron oxide (specifically, magnetite) with previously unrealized precision. Materials that have the ability to switch between being good conductors and being good insulators are considered good potential candidates for electronic building blocks – for use in transistors, for example. Now, an international team of scientists at LCLS, the US source for ultrafast X-ray light at the SLAC National Laboratory, has managed to freeze the switching mechanism in ultraslow-motion.
At BESSY II, the HZB operated electron storage ring, Schu?ler-Langeheine and his team took care of the work that was necessary in preparation for the SLAC experiment. The experiment, which was conducted in California, involved cooling magnetite to a temperature of minus 190 degrees.
The research was conducted jointly by scientists at the SLAC and Stanford University, the CFEL and Hamburg University, Amsterdam, Cologne, Potsdam, and Regensburg Universities, the Dresden-based MPI CPfS, the European Source for X-ray pulses ELETTRA in Trieste, the XFEL in Hamburg, the Advanced Light Source in Berkeley, and the Swiss Paul Scherrer Institute. The world is rapidly changing and all businesses have to prepare themselves for the future. At last, we are proud to offer wiring which actually reduces EMF emissions to extremely low levels.
The result is a high quality wire with the lowest possible EMF emissions (over 90% reduction compared to standard wire). MµCord™ flexible “appliance cord style” for re-wiring lights and appliances, making extension cords, etc. Spira-Shield provides high permeability magnetic shielding and physical protection for any ROMEX® electrical wiring.
For clarification: this item protects the cable inside the shield from magnetic fields originating outside the shield. Used for years in industry to shield delicate electronic components from EMFs, this 80% nickel alloy magnetic shielding foil is now available at affordable prices for home and office use.
Can be formed into cylindrical magnetic barriers around wiring to protect the shielded wire from magnetic fields originating outside the shield.
Can also be placed flat against wiring to shield an area from the magnetic fields emitted by the wire.
Composed of electrically conductive black polyethylene and great for shielding electrical cords.
2 mil thick aluminum alloy foil with a pressure-sensitive synthetic rubber adhesive and paper liner. Cables can act as an antenna, especially if they pass close to a strong source of radiofrequency radiation. This inexpensive tester can be used over and over and gives either peace of mind or a specific earning about what to do.
Replace the power cord on your lamps, hair dryer, small appliances, power tools and more with these MuCord™ power cords to reduce electric and magnetic fields from the cord to nearly zero. 4- Use metal clad (BX or metal conduit), to shield electric field if you must, but this makes controlling the flat side very difficult.
5- A better option is to enclose Romex in grounded Magnetic Shielding Foil (for straight runs) and SpiraShield (for curved sections) to shield both electric field and magnetic field. The generator is made from a coil of wire (about 1000 turns) wound around the last 3 cm, or so, of a large nail.
Cover the last 3-4 cm of the nail with a single layer of insulation tape (leave the nail head uncovered). The Iron nail is also important in our simple generator as it tends to concentrate the magnetic field.
The photo below shows a simple hand cranked generator I built which used two of these nail-generators wired together (to give twice the power). It may seem like common sense to use as low a voltage bulb as possible in this type of generator but actually a higher voltage bulb often works better. Most of these parts can be obtained from a DIY store or from electronic shops such as Tandy or Maplins. 5) can you use the nail-coil (without the magnet) as a 'search' coil for detecting magnetic fields ?
Electromagnetic properties (b-h curves) and electrical resistivity were the main properties investigated in the project work.

The stator is the stationary and magnetic part of a motor surrounding the rotor which turns.
The insights gleaned from this work provided the basic framework for the SLAC experiment and for its suc-cessful realization.
In a next step, the oxide was hit with laser light, the energy from which ended up prompting the switching mechanism.
Replacing existing wire with MµCord is likely to be much less costly, more effective, and probably more convenient than shielding. Simply cut wire to desired length and add a plug to one end, or plug one end and socket on the other. Only 4 mil thick, it won't hold up to tearing, heat or abuse, but it's tough enough to do a great job on the lamp cord by your bed, the air conditioner cord, or even cables in your car.
The aggressive rubber adhesive sticks well to most surfaces and the paper liner makes for convenient and reliable use.
One study has suggested that if the cable of a hands free mic passes near the phone's antenna, it can pick up some radiation and transmit it to your ear.
Electric sockets can be bad for a number of reasons: a wire can short or fray, a wire can become disconnected, or corrode at the contact, or the wires can be connected to the wrong contact altogether! The North American style extension cords are made with 100% MuCord™ for superior electric and magnetic shielding.
A better solution is to enclose the Romex in grounded Aluminum Tape to shield electric field.
It has been deliberately left as simple as possible so that there is maximum scope for using it in imaginative designs and inventions. When a spining magnet is placed near to the device it induces a voltage into the coil and this can then be used to light a bulb (or better still an LED see end for details) - generation of electricity can therefore be simply demonstrated. 0.3mm diameter) leave about 20-30 cm free and start to wind turns onto the insulated part of the nail between the two circles. Important points to note are that the voltage increases as the number of turns of wire on the coil, the size of the coil and the strength of the magnetic field increases. For example, thick wire means there will be less power loss, but the down side is that the coil will get very large when a great number of turns is needed. This means that the voltage appearing at the two wires alternates between + and -, and - and + each time the magnet makes a complete revolution.
Try putting the nail-head coil near to a speaker playing load music, does the LED flash with the music ?
As the sample, rings made of steel used for structural pieces in large AC machine have been chosen. At low temperatures, magnetite has insulating properties; at high temperatures, the oxide is a good conductor. In place of a strobe light, the researchers used an X-ray laser pulse to observe the switching mechanism. Slips over standard wiring to provide that peace of mind when it must be near electromagnetically active sources. These problems can be a fire hazard, a shock hazard, a problem for polarized appliances, and definitely a problem if you are using the socket’s ground connection to Earth your shielding. Now you can simply replace your Switch Plate or Outlet Cover with these custom shielded ones. Wind 1000-1500 turns (the exact number does not matter much and will depending on how neat you can get them on before they spill over the restraining cardboard circles).
Bring a magnet close to the head of the nail and while holding it about 5mm or so from the head rapidly move the magnet from side to side.
In a practical generator some trade off has therefore to be found between the size of magnet, coil and the wire. As a result the generator can light a bulb or an LED without you having to worry about which way round the connections need to go (as they are effectively reversing all the time anyway).
One needs to get the wiring between the coils correct otherwise the voltage will cancel and you won't get any power from the gen! What happens when the coil gets so large that mots of it is no longer very close to the nail ? This switching mechanism however happens so quickly that it’s been impossible until now to fully grasp it on an atomic level. Thereafter, it takes less than a picosecond (that is, one trillionth of a second) before the atoms reorganize to create a complete metallic grid,” explains HZB’s own Christian Schu?ler-Langeheine.
Only a handful of photon sources in the World have the capabilities of performing these types of picosecond interval time-resolved measurements. Can be formed into magnetic barriers on cellular phones, microwave ovens, doorbell transformers, VDTs, buried wiring, and more. Magnetic field reduction is 30 to 60% up close to the surface, depending on wire configuration.
Twisting the Romex is only better than having the flat side towards the living space as it simply alternates flat side then narrow side towards living space. However, this simple generator is not good for running radios, calculators or other devices that need a direct current (DC) that is produced for example from a battery.
By the way an LED (light emitting diode) works really really well in this design because they take very little current (about 0.01A).

Its is well worth trying other types of magnets but you might have to devise other ways of spinning the magnets to make sure the magnetic field is changing in the correct way with respect to the coil. With snug fitting shapes, get as much as 75% attenuation of the magnetic field with one thickness. The coil (or the magnet) needs to move in such a way that the coil continually passes through the magnetic field.
You can have fun though connecting up speakers to the generator output, as you can hear the electricity alternating - but please don't use your parents best Hi-Fi Speakers !, try using walkman type headphones etc. LED's can be obtained from Tandys or Maplins (almost any sort will do) or scrapped from an old radio or toy that contains one. Good generators can be made from button, bar, hourseshoe and cylindrical magnets - its just up to your imagination ! The stator and rotor are commonly built with specificgrades of laminated electrical steel. It is small and lightweight enough to be almost unnoticable, yet powerful enough (50 ohm impedence minimum) to control nasty radiation.
A simple wooden gear system was used so that you can comfortably generate electricity without having to turn the handle too fast. Proper dimensioning of the machine requires precise estimation of the B-H curves of the laminations and also the iron loss it undergoes during var- ious states of operation. If you have power cords anywhere near your bed, workstation, couch or other main living area, run this extension cord instead… to reduce EMF to nearly zero! The grades de- scribe material characteristics and losses at two operating points at least (f=50, 60 Hz and B=1, 1.5 T). These loss charac- teristics may not be sufficient for machines with variable speed drives or with different types of excitation supply. Make sure you have enough room between outlet and nearby moldings for these larger than standard covers. Beside lamina- tion sheets, structural metallic parts are used in the machine for several purposes. Some of these parts are also subjected to flux density variations if they happen to be placed in leakage flux paths. Due to lack of material characterization, these losses are usually not accounted in the simulation models. To include the structural materials in loss calculation model, they require characterization.This paper aims to describe the activities conducted to meas- ure the magnetic characteristics and loss figures under sinus- oidal excitation of a specific part of the electric machine, espe- cially manufactured rings made of steel used for structural parts.
Electrical characterization has been done to measure the resistivity values of the samples. The results [1] described in this paper are based upon experiments performed in the elec- tromagnetic engineering lab and electrical machines lab of Royal Institute of technology a€“ KTH, Stockholm, Sweden.a€”a€”a€”a€”a€”a€”a€”a€”a€”a€”a€”a€”a€”a€”a€”a€”1. In simple terms, magnetic characterization can be explained as an experimental procedure in which the specimens made of the investigated material are subjected to wide range of polarization levels at different frequencies. A commonly used instrumental setup facilitating the measurements is a hysteresisgraph or BH meter [3]. Test specimens defining closed magnetic loop are equipped with an excitation winding and a measurement winding.
The value of applied magnetic field H is directly proportional to the current according to line integral form of Amperea€™s law.Important properties of the soft magnetic material are ob- tained in points be, cf , a and d shown in figure 2.
But magnetic materials are non linear due to inherent hysteresis characteristics of the material. For traditional measurements analog feedback is sufficientThe applied magnetic field in the excitation coil gives rise tovoltage across the measurement winding. The induced voltageis integrated over time to obtain the induced flux density (B)using a fluxmeter.??‘‰??‘Y??‘s??‘  = a?s2???‹???‹??‘?2 ???????µ??‘s??‘Z??‘? (2)WhereThe computer interface allows conducting controlled magnetic measurements. To obtain initial b-h characteristics curve, the sample needs to be demagnetized in a decreasing alternating field to begin with. Problem arises when measurements are taken over wide range of polarization levels at high frequencies. Sinusoidal flux density is obtained by iterative modification of the magnetiz- ing current.
The wires were then covered with aluminum foils to further re- duce introduction of surrounding noise.
In this section, a number of experiments have been performed to measure the electrical resistivity of the ring samples.Electrical resistivity is an important physical property for any material to be used in electrical machines.
Moses, a€?Use of novel adap- tive digital feedback for magnetic measurements under controlled magnetizing conditionsa€?, IEEE Trans.
Soulard, a€?Overview and comparison of iron loss models for electrical machinesa€?, Journal of Electrical Engineering, vol.

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