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Patent

Low harmonic current and fault tolerant power supply

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TLDR
In this article, a fault tolerant power supply consisting of a first rectifier and a second rectifier with a boost circuit for correcting line current harmonics is presented, where the boost circuit and output diodes are connected in parallel with the first rectifiers.
Abstract
A fault tolerant power supply comprises a first rectifier and a second rectifier with a boost circuit for correcting line current harmonics. The second rectifier, the boost circuit and output diodes are connected in parallel with the first rectifier. A capacitor circuit is charged through the second rectifier and boost converter when a 240 volt line input is present, but the circuit is charged through the first rectifier when a 120 volt line input is present. With failure of the boost converter circuit or with removal of the boost converter circuit from the system, the capacitor circuit is charged through the first rectifier.

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Citations
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References
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Patent

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TL;DR: In this paper, an AC to DC converter comprises a bridge rectifier followed by a boost circuit, and a shunting switch connected to shunt the diode and load capacitor.
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Dual input voltage power source for selectively switching between voltage doubler rectification and full-wave rectification functions

Fumiaki Nakao, +1 more
TL;DR: In this paper, a voltage switching power source having a full-wave rectifier circuit and a voltage doubler circuit is presented, where a controller comprises a plurality of voltage level detectors which are associated with an input ac voltage and detect different voltages, and a switching signal generator which generates a delayed signal for switching between the full wave rectifier and voltage doublers, thereby preventing the electric circuit of the power source and the electric device to be supplied with the power from being damaged by excessively high voltages.