| voltage ripple |
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Analysis of DC output voltage ripple in an electromagnetic doubly salient brushless DC generator
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The influence of the exciting current and armature reaction on the DC voltage ripple of the generator is discussed in detail, and the nonlinear rules are gained that DC voltage ripple changes accordingly.
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Consequently, it can provide a steady DC output voltage with a low voltage ripple, approximately unitary input power factor and 2.5 kW output power.
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If a fast voltage compensator is applied to control the DC output voltage, the DC output voltage ripple, pulsating at twice the grid frequency, causes a third harmonic of considerable magnitude in the line current.
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It has been generally expected that, as X-ray tube-voltage ripple increases, the X-ray spectrum shifts to the low photon-energy side, and therefore the mean energy decreases, i.e.
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A discussion revolving around the difference between voltage ripple and EMI ensued.
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Estimates of the output voltage ripple are given and methods for its suppression are proposed.
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For example, varactor control voltage ripple is reduced 3 from 230 mV to 75 mV.
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ITTF are simplicity, efficiency and identi cal voltage ripple to that of the ZVS bridge.
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If the capacitance of the output capacitor increases, the voltage ripple becomes lower.
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In the steady-state condition, the fully-controlled bridge runs in half-controlled mode so as to keep the voltage ripple as low as possible.
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In a single-ended charge pump, the size of the flying capacitor CF and the output capacitor COUT determine the output voltage ripple.
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Low output-voltage ripple also allows use as a white-LED backlight driver or for standard power conversions from 3.3V or 5V to 12V.
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Notice that there is a 60-mV voltage ripple seen at the bottom of the eye, also predicted from simulation.
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Output voltage ripple is largely determined by the output filter capacitance.
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Pulse skipping prevents a loss of control of the output at very light loads and reduces output voltage ripple.
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So the motor speed can be stable even if the mains voltage ripple is high, as the MCU corrects the duty cycle according to this ripple.
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To ensure stability, the output voltage ripple and the ripple signal across R8 must be delivered with good fidelity.
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This is necessary to filter the DC link voltage ripple from the feedback signal and so to avoid input current distortion.
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This results in consistent voltage ripple on each pulse, thereby minimizing interpulse noise.
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