Linear electric generator
... to transform mechanical work into electric energy. Electrostatic generators developelectrostatic charges of opposite signs rendered to two conductors, using only electric forces, and work by using moving plates, drums, or belts to carry electric charge to a high potential electrode. The charge is ge ...
... to transform mechanical work into electric energy. Electrostatic generators developelectrostatic charges of opposite signs rendered to two conductors, using only electric forces, and work by using moving plates, drums, or belts to carry electric charge to a high potential electrode. The charge is ge ...
Wide range soft switching PWM three
... Presently strict efficiency standards have been setup to reduce overall energy consumed by loads powered by the utility mains in data centers. In such applications, the power converters mostly operate between 20% of full load and 60% of full load, so higher efficiencies need to be achieved at these ...
... Presently strict efficiency standards have been setup to reduce overall energy consumed by loads powered by the utility mains in data centers. In such applications, the power converters mostly operate between 20% of full load and 60% of full load, so higher efficiencies need to be achieved at these ...
Slides - Indico
... power extracted from the cavity by the beam. • The beam draws a power Pb=Vc Ibeam from the cavity. • Ibeam=q f, where q is the bunch charge and f is the repetition rate • This additional loss can be lumped in with the ohmic heating as an external circuit cannot differentiate between different passiv ...
... power extracted from the cavity by the beam. • The beam draws a power Pb=Vc Ibeam from the cavity. • Ibeam=q f, where q is the bunch charge and f is the repetition rate • This additional loss can be lumped in with the ohmic heating as an external circuit cannot differentiate between different passiv ...
The purpose of this project was to develop a cell phone charger that
... induction. This law states when that a changing magnetic field through a loop of wire (not specific) induces an electromotive force, or more precisely a current. In our case we will utilize this current to charge a cell phone. To utilize this induced current one must first understand the basic eleme ...
... induction. This law states when that a changing magnetic field through a loop of wire (not specific) induces an electromotive force, or more precisely a current. In our case we will utilize this current to charge a cell phone. To utilize this induced current one must first understand the basic eleme ...
Synchronization of underdamped Josephson-junction arrays
... A Josephson junction is a high-frequency generator: If a DC voltage V0 is applied to it, it will generate an AC current with a frequency f = (2e/h)V0 = (483 GHz/mV) V0 , where h is Planck’s constant [1]. Potential applications are for fast electronics, from high-speed digital devices to millimeter-w ...
... A Josephson junction is a high-frequency generator: If a DC voltage V0 is applied to it, it will generate an AC current with a frequency f = (2e/h)V0 = (483 GHz/mV) V0 , where h is Planck’s constant [1]. Potential applications are for fast electronics, from high-speed digital devices to millimeter-w ...
Fluxgate Magnetometer
... The instrument of choice for the modern treasure hunter is no doubt the metal detector which has the capability of not only finding precious metals but most can also provide some level of discrimination against unwanted targets such as pulltabs and foil. The metal detector operates by generating a d ...
... The instrument of choice for the modern treasure hunter is no doubt the metal detector which has the capability of not only finding precious metals but most can also provide some level of discrimination against unwanted targets such as pulltabs and foil. The metal detector operates by generating a d ...
Aalborg Universitet
... from the cables, a parallel resonant circuit will start oscillating when disconnecting the line and because of the very high quality factor (very low resistance) for power systems in general and voltage will decay slowly with an oscillatory behavior. This was expected and TSO Energinet. dk has measu ...
... from the cables, a parallel resonant circuit will start oscillating when disconnecting the line and because of the very high quality factor (very low resistance) for power systems in general and voltage will decay slowly with an oscillatory behavior. This was expected and TSO Energinet. dk has measu ...
A MEMS Resonant Strain Sensor with 33 nano
... sensing because of their inherently high strain sensitivity for a given gauge length (Lg). As a result they are capable of measuring small strain fields with high accuracy [2]. The DETF sensor presented in this work has a resonant frequency of 217kHz, and Lg = 200µm, It has strain and displacement ...
... sensing because of their inherently high strain sensitivity for a given gauge length (Lg). As a result they are capable of measuring small strain fields with high accuracy [2]. The DETF sensor presented in this work has a resonant frequency of 217kHz, and Lg = 200µm, It has strain and displacement ...
Inverter topologies
... possible, depending on the application. In both cases a free path is offered to any inductive load. • Full control of the line inductor is offered. Excessive energy can be “dumped” via adequate control of the MOSFETs in the primary side. • Due to the flexibility of choice between Uni-polar and Bi-po ...
... possible, depending on the application. In both cases a free path is offered to any inductive load. • Full control of the line inductor is offered. Excessive energy can be “dumped” via adequate control of the MOSFETs in the primary side. • Due to the flexibility of choice between Uni-polar and Bi-po ...
Rider TV1 - Early Television Foundation
... straight between 8.15 and 8.35 MC. The more gradual slope on the other side should extend from 8.35 MC to approximately 8.7 MC. Very few turns of the cores should be required to obtain the desired result. No more than 30% loss in peak over-all response should result from this process. ...
... straight between 8.15 and 8.35 MC. The more gradual slope on the other side should extend from 8.35 MC to approximately 8.7 MC. Very few turns of the cores should be required to obtain the desired result. No more than 30% loss in peak over-all response should result from this process. ...
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.