A discriminating metal detector
... air. This will affect the coupling between the two coils in the search head, increasing the coupling if the transmit and receive coils are initially set up away from the influence of the ground. You can compensate for this effect by physically varying the position of one coil in relation to the othe ...
... air. This will affect the coupling between the two coils in the search head, increasing the coupling if the transmit and receive coils are initially set up away from the influence of the ground. You can compensate for this effect by physically varying the position of one coil in relation to the othe ...
AC Circuits
... P3 window, easily, and perhaps also a P5 window. To see all these behaviors at once, use a triangle wave (about 100 Hz) from another function generator to amplitude-modulate the driving generator and to trigger the scope; then you can display a sort of bifurcation diagram for the circuit. With this ...
... P3 window, easily, and perhaps also a P5 window. To see all these behaviors at once, use a triangle wave (about 100 Hz) from another function generator to amplitude-modulate the driving generator and to trigger the scope; then you can display a sort of bifurcation diagram for the circuit. With this ...
Wye, Too - Dranetz
... The most common type of power quality disturbance is the sag, a temporary reduction in the voltage, with a duration ranging from one cycle to a minute. On the electrical distribution system, a common cause of this is single line to ground (SLTG) faults. This means that there is an unintentional conn ...
... The most common type of power quality disturbance is the sag, a temporary reduction in the voltage, with a duration ranging from one cycle to a minute. On the electrical distribution system, a common cause of this is single line to ground (SLTG) faults. This means that there is an unintentional conn ...
2013 Power electronics SMC inductive components optimization with Flux3D FrancCol CN64
... Stray inductance optimization With inductances, especially in transformers, stray inductance optimisation (minimization or imposed value) is a real constraint for power electronics designers. Undoubtedly inductance with low external leakage flux is good, because it allows close external shielding, w ...
... Stray inductance optimization With inductances, especially in transformers, stray inductance optimisation (minimization or imposed value) is a real constraint for power electronics designers. Undoubtedly inductance with low external leakage flux is good, because it allows close external shielding, w ...
isscc 2013 / session 24 / energy
... and the proposed intermittent resonant clocking (IRC) with an unbuffered Htree, respectively. The conventional resonant clocking in Fig. 24.9.1(b) has three problems: 1) The clock frequency (fCLK) range is narrow, typically ±20% [3-5]. At fCLK lower than the resonant frequency (fRES), power higher t ...
... and the proposed intermittent resonant clocking (IRC) with an unbuffered Htree, respectively. The conventional resonant clocking in Fig. 24.9.1(b) has three problems: 1) The clock frequency (fCLK) range is narrow, typically ±20% [3-5]. At fCLK lower than the resonant frequency (fRES), power higher t ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... large turns ratio will lead to a large leakage inductance. Hence voltage stress of the switch will be increased, which will result in degraded efficiency[1-3]. In case of the non-isolated dc–dc converters, the boost converter is usually used for voltage step-up. But as the output voltage increase, d ...
... large turns ratio will lead to a large leakage inductance. Hence voltage stress of the switch will be increased, which will result in degraded efficiency[1-3]. In case of the non-isolated dc–dc converters, the boost converter is usually used for voltage step-up. But as the output voltage increase, d ...
measuring instruments
... Turns ratio for P.T, n = number of turns of winding primary /number of turns of secondary winding. Ratio correction factor: The ratio of correction factor is the transformation ratio divided by nominal ratio. transformation ratio = ratio correction factor x nominal ratio ...
... Turns ratio for P.T, n = number of turns of winding primary /number of turns of secondary winding. Ratio correction factor: The ratio of correction factor is the transformation ratio divided by nominal ratio. transformation ratio = ratio correction factor x nominal ratio ...
Influence of the Snubbers and Matching Transformer on an Optimal
... analyses describe quite precisely the converter operation process, but they fail to clarify a very important event: the increase in load resistance disrupts the conditions for innate switching-on of the transistors at zero voltage (ZVS) and shuts the converter off. The analyses presented by [3] show ...
... analyses describe quite precisely the converter operation process, but they fail to clarify a very important event: the increase in load resistance disrupts the conditions for innate switching-on of the transistors at zero voltage (ZVS) and shuts the converter off. The analyses presented by [3] show ...
บทที่ 6 Special Transformers
... Induction heating transformers (ต่ อ) • The magnetizing current is low because the flux is confined to a highly permeable iron core. On the other hand, the leakage flux is large because the secondary turn is obviously not tightly coupled to the primary coil. Nevertheless, the power factor is higher ...
... Induction heating transformers (ต่ อ) • The magnetizing current is low because the flux is confined to a highly permeable iron core. On the other hand, the leakage flux is large because the secondary turn is obviously not tightly coupled to the primary coil. Nevertheless, the power factor is higher ...
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.