SMJE 2103 Electiral Power System
... (a) If the power system is exactly as described above in Figure (a), what will the voltage at the load be? What will the transmission line losses be? (b) Suppose a 1:10 step-up transformer is placed at the generator end of the transmission line and a 10:1 step-down transformer is placed at the load ...
... (a) If the power system is exactly as described above in Figure (a), what will the voltage at the load be? What will the transmission line losses be? (b) Suppose a 1:10 step-up transformer is placed at the generator end of the transmission line and a 10:1 step-down transformer is placed at the load ...
Instructions_CX_CDI_..
... bit of thecap chipped off. These coils contain approximately 4000 turns of very fine wire between them which is used to generate the high voltage required for the original CDI based ignition. These coils deteriorate over time and use and eventually fail. In order to replace these two coils – the eng ...
... bit of thecap chipped off. These coils contain approximately 4000 turns of very fine wire between them which is used to generate the high voltage required for the original CDI based ignition. These coils deteriorate over time and use and eventually fail. In order to replace these two coils – the eng ...
design and simulation of 505.8 MHz strip line directional
... (FDTD), for low insertion loss and high directivity of 40 dB, optimized up to 10 kW RF power at 505.8 MHz. This will be be used for circulator testing, and other high frequency applications for reflection measurement in transmission lines. ...
... (FDTD), for low insertion loss and high directivity of 40 dB, optimized up to 10 kW RF power at 505.8 MHz. This will be be used for circulator testing, and other high frequency applications for reflection measurement in transmission lines. ...
How to Minimize Touchscreen Electromagnetic Interference
... relatively large values of the Y-capacitors couple the mains voltage very effectively, resulting in a large mains frequency voltage coupled at relatively low impedance through the finger on the touchscreen. ...
... relatively large values of the Y-capacitors couple the mains voltage very effectively, resulting in a large mains frequency voltage coupled at relatively low impedance through the finger on the touchscreen. ...
High Efficiency Squirrel Cage Induction Machines
... Pm,v - mechanical and ventilation losses, Pe electromagnetic power at the airgap level, Ps supplementary losses. ...
... Pm,v - mechanical and ventilation losses, Pe electromagnetic power at the airgap level, Ps supplementary losses. ...
Soft Magnetic Materials for Audio Transformers
... the operation of hot and cold rolling mills and particularly a steam hammer. The result was that the measurements had to be made in the middle of the night when all was quiet. The magnetostriction movement on the grain boundary was on the order of one-millionth of its length for that particular spec ...
... the operation of hot and cold rolling mills and particularly a steam hammer. The result was that the measurements had to be made in the middle of the night when all was quiet. The magnetostriction movement on the grain boundary was on the order of one-millionth of its length for that particular spec ...
MAX8622 Fast-Charge-Time Xenon Flash Charger for Digital Still Cameras and Camera Phones
... small, the primary windings may not cover the width of the core and result in poor coupling to the secondary. This also increases the leakage inductance. Leakage inductance does not participate in the primary to secondary energy transfer. Since the leakage inductance does not find a path for the cur ...
... small, the primary windings may not cover the width of the core and result in poor coupling to the secondary. This also increases the leakage inductance. Leakage inductance does not participate in the primary to secondary energy transfer. Since the leakage inductance does not find a path for the cur ...
How real electric motors work
... current actually coming in that first wire. The first winding produces a north pole facing in; the second a south pole facing in; etc, like this: N-S-N-S. Half a mains cycle later (10 ms) the current has reversed and so must the magnetic sense of the poles, which are now: S-N-S-N. The rotor is an el ...
... current actually coming in that first wire. The first winding produces a north pole facing in; the second a south pole facing in; etc, like this: N-S-N-S. Half a mains cycle later (10 ms) the current has reversed and so must the magnetic sense of the poles, which are now: S-N-S-N. The rotor is an el ...
Flyback Converter Design
... Unlike with a boost converter where inductors are available in many different values, the perfect transformer turns ratio might be hard to come by. Therefore it is wise to start the design by choosing a transformer that is close to where we need to be and adjusting the components in the design to co ...
... Unlike with a boost converter where inductors are available in many different values, the perfect transformer turns ratio might be hard to come by. Therefore it is wise to start the design by choosing a transformer that is close to where we need to be and adjusting the components in the design to co ...
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.