Limiting continuous current 250A at 85°C
... max. altitude 5000m Insulation resistance after 2000A abuse test between open contacts >200MΩ between contact and coil >200MΩ Clearance/creepage acc. IEC 60664-1 (2007) for over voltage category I, ...
... max. altitude 5000m Insulation resistance after 2000A abuse test between open contacts >200MΩ between contact and coil >200MΩ Clearance/creepage acc. IEC 60664-1 (2007) for over voltage category I, ...
Rapid Wireless Capacitor Charging Using a Multi
... significantly [12]. Additional power management is also required for devices utilizing ultra-capacitors as energy sources, in order to regulate the output voltage [13], [14]. The salient saving feature of ultra-capacitors as energy storage elements is their ability to rapidly charge. Unlike batterie ...
... significantly [12]. Additional power management is also required for devices utilizing ultra-capacitors as energy sources, in order to regulate the output voltage [13], [14]. The salient saving feature of ultra-capacitors as energy storage elements is their ability to rapidly charge. Unlike batterie ...
A LARGE-POWER VOLTAGE SOURCE CONVERTER FOR FACTS
... The 12 inverter poles forming the VSC share a common dc bus and are implemented using standard power electronic building blocks of well-proven reliability. The output voltage is doubled by using an H-bridge configuration, and only a single-secondary grid coupling transformer is required. In addition ...
... The 12 inverter poles forming the VSC share a common dc bus and are implemented using standard power electronic building blocks of well-proven reliability. The output voltage is doubled by using an H-bridge configuration, and only a single-secondary grid coupling transformer is required. In addition ...
![1E6 ELECTRICAL ENGINEERING [5 credits]](http://s1.studyres.com/store/data/008172045_1-b416785fd6305cc783c87ea745442b53-300x300.png)
No Slide Title
... – Isolating electronic equipment from 120-volts AC, 60-hertz power while it is being tested. • Does not step up or step down the voltage. ...
... – Isolating electronic equipment from 120-volts AC, 60-hertz power while it is being tested. • Does not step up or step down the voltage. ...
MEASURING INSTRUMENTS
... The PMMC has a variety of uses onboard ship. It can be used as: 1) Ammeter: • When PMMC is used as an ammeter, except for a very small current range, the moving coil is connected across a suitable low resistance shunt, so that only small part of the main current flows through the coil. • The shunt c ...
... The PMMC has a variety of uses onboard ship. It can be used as: 1) Ammeter: • When PMMC is used as an ammeter, except for a very small current range, the moving coil is connected across a suitable low resistance shunt, so that only small part of the main current flows through the coil. • The shunt c ...
General notes on duplexers
... 0.6V to 1V any noise at the output of the off state power amp will not pass through the diodes and thus will not interfere with the receive signal. Slight distortion of the transmit pulse occurs near zero for the same reason but this is insignificant compared to the high voltage of the transmit puls ...
... 0.6V to 1V any noise at the output of the off state power amp will not pass through the diodes and thus will not interfere with the receive signal. Slight distortion of the transmit pulse occurs near zero for the same reason but this is insignificant compared to the high voltage of the transmit puls ...
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.