Chapter 1: DESIGN PROCESS
... A number of electrical components fall under the category “service equipment.” A transformer is such a component. Transformers are used to change voltage, typically to reduce service voltage to an appropriate utilization voltage (step-down) —but they can also be used to increase voltage (step-up). T ...
... A number of electrical components fall under the category “service equipment.” A transformer is such a component. Transformers are used to change voltage, typically to reduce service voltage to an appropriate utilization voltage (step-down) —but they can also be used to increase voltage (step-up). T ...
Typical Current Transformer
... Generally current transformers and ammeters are used together as a matched pair in which the design of the current transformer is such as to provide a maximum secondary current corresponding to a full-scale deflection on the ammeter. In most current transformers an approximate inverse turns ratio ex ...
... Generally current transformers and ammeters are used together as a matched pair in which the design of the current transformer is such as to provide a maximum secondary current corresponding to a full-scale deflection on the ammeter. In most current transformers an approximate inverse turns ratio ex ...
Transformers
... small amount of current flow in the primary in a “no-load” condition is called the Excitation Current. ...
... small amount of current flow in the primary in a “no-load” condition is called the Excitation Current. ...
Here the details as described by Paul E. Potter.
... because it would be more advantageous, and safer, to have each separate pancake's magnetic flux cut it's own adjoining secondary coil, and divide the secondary output voltage into smaller amounts of potential, thus depending less on complicated insulating procedures that accompany high voltage singl ...
... because it would be more advantageous, and safer, to have each separate pancake's magnetic flux cut it's own adjoining secondary coil, and divide the secondary output voltage into smaller amounts of potential, thus depending less on complicated insulating procedures that accompany high voltage singl ...
Motors and Generators
... direction as before; this is to ensure the magnetic field produced by the induced current opposes the permanent magnets field – due to Len's Law. Note: The right hand grip rule was applied to verify that the two magnetic fields opposed each other – however this could be physically felt by their repu ...
... direction as before; this is to ensure the magnetic field produced by the induced current opposes the permanent magnets field – due to Len's Law. Note: The right hand grip rule was applied to verify that the two magnetic fields opposed each other – however this could be physically felt by their repu ...
The Numerical Simulation Study of the DC Compensated Choke for
... The entire filter designing process has been supported by simulations. Firstly, to verify the general idea, simple circuit simulations have been made in the LT-Spice. Then, in order to design the inductive components of the filter with the required parameters a simulation based on the Finite Element ...
... The entire filter designing process has been supported by simulations. Firstly, to verify the general idea, simple circuit simulations have been made in the LT-Spice. Then, in order to design the inductive components of the filter with the required parameters a simulation based on the Finite Element ...
Introduction
... gaps, located below the primary coil (16). The arcs produced in the spark gaps are much brighter than the arcs emitted by the toroid, and may cause eye damage if directly observed for prolonged periods. 15. Under some possible failure conditions, parts of the Tesla Coil may maintain a dangerous elec ...
... gaps, located below the primary coil (16). The arcs produced in the spark gaps are much brighter than the arcs emitted by the toroid, and may cause eye damage if directly observed for prolonged periods. 15. Under some possible failure conditions, parts of the Tesla Coil may maintain a dangerous elec ...
Time varying fields and Maxwell EQUATIONS
... observe that a changing magnetic field will produce a changing electric field and vice versa. We begin our discussion with Faraday's Law of electromagnetic induction and then present the Maxwell's equations which form the foundation for the electromagnetic theory. Faraday's Law of electromagnetic In ...
... observe that a changing magnetic field will produce a changing electric field and vice versa. We begin our discussion with Faraday's Law of electromagnetic induction and then present the Maxwell's equations which form the foundation for the electromagnetic theory. Faraday's Law of electromagnetic In ...
Project - sunist
... homopolar generators could be operated continuously but they are not believed to be an economic and viable option when operated in this mode. Compulsators, superconducting magnetic energy storage and capacitor storage systems are not suitable for continuous supplies. Previous ST reactor studies [4,5 ...
... homopolar generators could be operated continuously but they are not believed to be an economic and viable option when operated in this mode. Compulsators, superconducting magnetic energy storage and capacitor storage systems are not suitable for continuous supplies. Previous ST reactor studies [4,5 ...
Resonant inductive coupling
Resonant inductive coupling or electrodynamic induction is the near field wireless transmission of electrical energy between two magnetically coupled coils that are part of resonant circuits tuned to resonate at the same frequency. This process occurs in a resonant transformer, an electrical component which consists of two high Q coils wound on the same core with capacitors connected across the windings to make two coupled LC circuits. Resonant transformers are widely used in radio circuits as bandpass filters, and in switching power supplies. Resonant inductive coupling is also being used in wireless power systems. Here the two LC circuits are in different devices; a transmitter coil in one device transmits electric power across an intervening space to a resonant receiver coil in another device. This technology is being developed for powering and charging portable devices such as cellphones and tablet computers at a distance, without being tethered to an outlet.Resonant transfer works by making a coil ring with an oscillating current. This generates an oscillating magnetic field. Because the coil is highly resonant, any energy placed in the coil dies away relatively slowly over very many cycles; but if a second coil is brought near it, the coil can pick up most of the energy before it is lost, even if it is some distance away. The fields used are predominately non-radiative, near fields (sometimes called evanescent waves), as all hardware is kept well within the 1/4 wavelength distance they radiate little energy from the transmitter to infinity.One of the applications of the resonant transformer is for the CCFL inverter. Another application of the resonant transformer is to couple between stages of a superheterodyne receiver, where the selectivity of the receiver is provided by tuned transformers in the intermediate-frequency amplifiers. The Tesla coil is a resonant transformer circuit used to generate very high voltages, and is able to provide much higher current than high voltage electrostatic machines such as the Van de Graaff generator. Resonant energy transfer is the operating principle behind proposed short range (up to 2 metre) wireless electricity systems such as WiTricity or Rezence and systems that have already been deployed, such as Qi power transfer, passive RFID tags and contactless smart cards.