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PowerPoint-presentation
PowerPoint-presentation

... •Literature also describes damage in distribution transformers, cable and cable termination and in motor bearings due to HF- harmonics. •While the symmetrical fundamental frequency current is cancelled and the zerosequence harmonics is summarized in the neutral wire the HF- harmonic current increase ...
Lab Assignments
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... Part 4: Design a voltage sensor amplifier with signal and reference inputs Apply vsig (mimicking a sensor) and vref as sinusoidal inputs at 1KHz. How can you achieve vout = - (vsig – vref)? Show it theoretically and experimentally by determining the resistor values. Determine the resistor values su ...
IEEE`s Hands on Practical Electronics (HOPE)
IEEE`s Hands on Practical Electronics (HOPE)

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power triangle

... Reactive power is the portion of power that flows into load and then back out.  It contributes nothing to average power.  The power that flows into and out of a pure inductor is reactive power only. ...
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... We can find the currents and voltages in a simple circuit graphically. For example if we apply a voltage of 2.5V to the two resistors of our earlier ...
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Basic Electronics

... A circuit has the following resistances Ω. What is the total resistance in the circuit? (6 marks) Select any true statements about this circuit by applying a yellow highlight on the statement or letter and a red highlight on an incorrect statement. a. This is a series/parallel circuit in which there ...
Lab 2: Circuit Simulation - Electrical and Computer Engineering
Lab 2: Circuit Simulation - Electrical and Computer Engineering

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MAX5304 10-Bit Voltage-Output DAC in 8-Pin µMAX General Description

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... converter (i.e. rectifier), a battery bank (which can be charged by the rectifier or with an appropriate current charger) and a DC/AC converter (i.e. inverter) (see fig. 3). Generally as the input converter is expected to provide a charge or to maintain the charge of the battery at a constant voltag ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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