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Unit_III
Unit_III

... For a load impedance ZL=60-j80Ω, design two single-stub (short circuit) shunt tunning networks to matching this load to a 50 Ω line. Assuming that the load is matched at 2GHz and that load consists of a resistor and capacitor in series. ...
AN137: Lithium Ion Battery Charger Using C8051F300
AN137: Lithium Ion Battery Charger Using C8051F300

A 16-GHz Ultra-High-Speed Si–SiGe HBT Comparator , Student Member, IEEE,
A 16-GHz Ultra-High-Speed Si–SiGe HBT Comparator , Student Member, IEEE,

... off in the track phase, but, at 10 GHz, when a small keep-alive current biases the latch, the comparator works again. At 11 GHz, the comparator does not function with zero or 50 A biasing the latch, but when 100 A biases the latch, the comparator again functions as predicted. With a larger input sig ...
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... specific frequency value supplied from a variable frequency drive (VFD) source. The thesis explains in detail the effect of varying the frequency values supplied from the VFD system on the motor’s speed. This study also aims for determining the torque-speed characteristic curve of this motor and ana ...
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bq500410A Qi Compliant Free-Positioning Wireless Power

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... written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instruct ...
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... IN to GND .................................................................-0.3V to +7V SHDN to GND...........................................................-0.3V to +7V SET to GND ..............................................-0.3V to (VOUT + 0.3V) MR to GND ....................................... ...
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... circuit, and a voltage modulator. A prototype implementation of Nemo is shown in Fig. 2. The measurement circuit measures the current draw of the host node, and sends the measurement to the MCU. The voltage modulator, which is directly connected to an I/O pin of the MCU, modulates the voltage on the ...
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... carried out basing on the motor torque equation as a product of stator ψ s and rotor ψ r fluxes and the angle between them as well as the dependence of the stator flux on the inverter output voltage vectors [1, 4]. The analysis is usually carried out in the stationary coordinates αβ. Such an approac ...
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... at 175°C junction temperature, which means the case temperature could reach 100°C or more, while most components in the driver cannot work normally at such high temperature. Thus this is a challenge for gate driver working at high temperature. B. Short-circuit Failure Mechanisms IGBT short-circuit f ...
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Three-phase electric power



Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same line to ground voltage because it uses less conductor material to transmit electrical power.The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky, Jonas Wenström and Nikola Tesla in the late 1880s.
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