Magnetism - Deakin University Blogs
... everyday life, but they often expect magnets to attract any metal object rather than only iron and steel. Magnets have no effect on aluminium, brass, silver or copper. A difficulty for students in exploring this is that they will not know from what metal common objects are made, and some substances ...
... everyday life, but they often expect magnets to attract any metal object rather than only iron and steel. Magnets have no effect on aluminium, brass, silver or copper. A difficulty for students in exploring this is that they will not know from what metal common objects are made, and some substances ...
for Coil Detuning - Efficient Power Conversion
... Target audience: This work is relevant to those interested in RF coil design and patient safety. Purpose: Coil detuning in RF coils is necessary for patient safety and RF field homogeneity. Decoupling is typically achieved using PIN diodes, which function as switches to permit or restrict the flow o ...
... Target audience: This work is relevant to those interested in RF coil design and patient safety. Purpose: Coil detuning in RF coils is necessary for patient safety and RF field homogeneity. Decoupling is typically achieved using PIN diodes, which function as switches to permit or restrict the flow o ...
Electricity
... The same force acts between two charged fields when the distance r between the sphere midpoints is significantly greater than the sphere diameter, so that the uniform charge distributions of the spheres is undisturbed. In other words, the spheres in this geometry may be treated as points. In this ex ...
... The same force acts between two charged fields when the distance r between the sphere midpoints is significantly greater than the sphere diameter, so that the uniform charge distributions of the spheres is undisturbed. In other words, the spheres in this geometry may be treated as points. In this ex ...
Physics
... Total internal reflection: Explanation of phenomenon - Mention of conditions Definition of critical angle - Mention the relation between n and ic - Mention of its applications (mirage, total reflecting prisms and optical fibers). Refraction at spherical surfaces: Derivation of the relation between ...
... Total internal reflection: Explanation of phenomenon - Mention of conditions Definition of critical angle - Mention the relation between n and ic - Mention of its applications (mirage, total reflecting prisms and optical fibers). Refraction at spherical surfaces: Derivation of the relation between ...
voltage ratio
... minimum 3.15 mm for transformers above 10 KVA and upto 250 KV A and minimum 4 mm for the next higher ratings. Top and bottom plate of the tank must be of minimum 5 mm. thick. It should be shaped so as to make welding to a minimum. All welding shall be done electrically and relieved of welding stress ...
... minimum 3.15 mm for transformers above 10 KVA and upto 250 KV A and minimum 4 mm for the next higher ratings. Top and bottom plate of the tank must be of minimum 5 mm. thick. It should be shaped so as to make welding to a minimum. All welding shall be done electrically and relieved of welding stress ...
isolation transformer
... delta configuration or a combination of both. The names refer to the typical schematic representation of the windings. Three-phase This transformer is a wye-todelta configuration, which is generally used in step down cases. The delta-wye (not shown) is generally used in step up cases. ...
... delta configuration or a combination of both. The names refer to the typical schematic representation of the windings. Three-phase This transformer is a wye-todelta configuration, which is generally used in step down cases. The delta-wye (not shown) is generally used in step up cases. ...
Superconductors - Maritime Symposium Rotterdam
... Metals conducting electricity at room temperature always have a resistance that results in a loss of power which is converted to heat. There are also insulators like plastic and rubber that conduct no electricity or very little. A superconductor has zero electrical resistance and is a perfect conduc ...
... Metals conducting electricity at room temperature always have a resistance that results in a loss of power which is converted to heat. There are also insulators like plastic and rubber that conduct no electricity or very little. A superconductor has zero electrical resistance and is a perfect conduc ...
High-Temperature Cuprate Superconductors Get to Work
... he cover story in the 11 May 1987 issue of Time magaOne hurdle was to learn how to make useful materizine featured the discovery of high-temperature super- als from HTSs, which are brittle ceramics that exist in conductors (HTSs) announced the previous year by the multiple phases and morphologies. A ...
... he cover story in the 11 May 1987 issue of Time magaOne hurdle was to learn how to make useful materizine featured the discovery of high-temperature super- als from HTSs, which are brittle ceramics that exist in conductors (HTSs) announced the previous year by the multiple phases and morphologies. A ...
MOSFET power losses and how they affect power
... current is zero when the switch is open and the power loss is zero, thus VIN is being chopped. When the switch is closed, the voltage across it is zero and the power loss is also zero. An ideal switch implies zero losses, thus offering 100% efficiency. However, components are not ideal, as is illust ...
... current is zero when the switch is open and the power loss is zero, thus VIN is being chopped. When the switch is closed, the voltage across it is zero and the power loss is also zero. An ideal switch implies zero losses, thus offering 100% efficiency. However, components are not ideal, as is illust ...
Electromagnet Experiment Stand - A Variable Power Electromagnet
... feet) of 22 gauge solid core, enamel insulated magnet wire. The electromagnet's core consists of a 5/8" diameter, 5 3/8" long hex bolt. The coil was wrapped around the core in six layers, each containing approximately 130 turns, for a total of roughly 780 turns. The coil is tapped between the 3rd an ...
... feet) of 22 gauge solid core, enamel insulated magnet wire. The electromagnet's core consists of a 5/8" diameter, 5 3/8" long hex bolt. The coil was wrapped around the core in six layers, each containing approximately 130 turns, for a total of roughly 780 turns. The coil is tapped between the 3rd an ...
Calculation and Analysis of Transformer Inrush Current Based on
... on the other hand, the flux waveform is the integral of the voltage waveform. In continuously-operating transformer, these two waveforms are shifted by 90°. But a significant difference exists between continuous-mode operation and energization of a transformer. During continuous operation, the flux ...
... on the other hand, the flux waveform is the integral of the voltage waveform. In continuously-operating transformer, these two waveforms are shifted by 90°. But a significant difference exists between continuous-mode operation and energization of a transformer. During continuous operation, the flux ...
EVC 250 Main Contactor White Paper from TE Connectivity
... In accordance with the requirement (1), there are two main contactors, one interrupting the negative pole and the other interrupting the positive pole of the battery. In the positive path, a serial fuse is inserted. At the inverter input, filter capacitors exist, that generate a severe inrush curren ...
... In accordance with the requirement (1), there are two main contactors, one interrupting the negative pole and the other interrupting the positive pole of the battery. In the positive path, a serial fuse is inserted. At the inverter input, filter capacitors exist, that generate a severe inrush curren ...
Magnetic-field-induced lateral displacements of current filaments in
... current scale increases with rising magnetic field. Thus a stable filamentary current flow at zero magnetic field is destabilized by applying a magnetic field yielding reguiar osciiiations. At a constant bias current of, for example, 100 p A the limit of stability is approached at a magnetic field o ...
... current scale increases with rising magnetic field. Thus a stable filamentary current flow at zero magnetic field is destabilized by applying a magnetic field yielding reguiar osciiiations. At a constant bias current of, for example, 100 p A the limit of stability is approached at a magnetic field o ...
Numerical Simulation of Multi-Junction Bias Circuits for
... small magnetic field is usually applied parallel to the junction in order to suppress the Josephson supercurrent. The application of a parallel field is not difficult; however it can be limiting for certain applications. For example, removing the magnetic field may open up applications involving a s ...
... small magnetic field is usually applied parallel to the junction in order to suppress the Josephson supercurrent. The application of a parallel field is not difficult; however it can be limiting for certain applications. For example, removing the magnetic field may open up applications involving a s ...
SQUIDs- Superconducting Quantum Interference Devices
... ΦT vs Φ curve is nonhysteretic. Alternately for the case of βL0 > 1, there is a region which Eq.11 is positive, negative or divergent so the ΦT vs Φ curve become hysteretic. RF SQUIDs have been operated in both mods. While working in hysteretic mode the SQUID makes transition between quantum states ...
... ΦT vs Φ curve is nonhysteretic. Alternately for the case of βL0 > 1, there is a region which Eq.11 is positive, negative or divergent so the ΦT vs Φ curve become hysteretic. RF SQUIDs have been operated in both mods. While working in hysteretic mode the SQUID makes transition between quantum states ...
Noise Control in Measurements
... and serve to bend or shunt the magnetic field around the conductor rather than eliminate it. Magnetic shields are made from high-permeability materials such as iron and other ferro-magnetic metals. At the relatively low 50/60‑Hz power line frequencies often encountered in magnetic noise problems, sh ...
... and serve to bend or shunt the magnetic field around the conductor rather than eliminate it. Magnetic shields are made from high-permeability materials such as iron and other ferro-magnetic metals. At the relatively low 50/60‑Hz power line frequencies often encountered in magnetic noise problems, sh ...
