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power supply

A technology of power supply and waveform, which is applied in the field of power supply, can solve problems such as fluctuations, and achieve the effect of easy design and manufacture and fast product design cycle

Inactive Publication Date: 2017-11-14
THX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Likewise, although the ripple is reduced in the single-phase power supply, the ripple is still present and usually requires a storage capacitor to reduce it to an acceptable level

Method used

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Embodiment Construction

[0041] In accordance with one or more embodiments, a power supply is provided having one or more intermediate input waveforms that are shaped or otherwise selected between the latter provided to an isolation transformer. The property of shaping, selecting, or otherwise creating an input waveform such that the converted waveform requires minimal rectification and / or smoothing in order to produce a DC output waveform.

[0042] Figure 8 A conceptual block diagram of the power supply 800 disclosed herein is shown. exist Figure 8 , the signal source (waveform) generator 805 generates a pair of complementary waveform signals 823,824. Complementary waveform signals 823, 824 are selected to provide a constant DC output level after being coupled to output (rectification) stage 840 via level shifting stage 830, where the level shifted signals are rectified and combined while minimizing the output Stage 840 requires energy storage / smoothing capacitors. Preferably the complementary ...

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Abstract

A power supply comprising two or more input waveforms shaped or selected so that when individually level shifted and rectified, their sum results in a substantially ripple-free DC output waveform. The power supply contains a waveform generator, level translation stages for step-up or step-down conversion, a rectification stage, and a synthesizer. The waveform generator can generate complementary waveforms, preferably identical but phase shifted from each other, so that after level shifting, rectifying and summing the complementary waveforms, their sum will be constant, so that the generation of the DC output waveform does not require smoothing or only a minimum smooth. Level shifting can be performed using a transformer or a switched capacitor circuit. Feedback from the thus DC output waveform can be used to adjust the characteristics of the input waveform.

Description

[0001] This application is a divisional application of the Chinese patent application 201080043363.3 named "Power Supply" with an international filing date of July 28, 2010 and a national phase entry date of March 28, 2012. [0002] Related application information [0003] This application claims the benefit of US Provisional Application Serial No. 61 / 229,217, filed July 28, 2009, the entire contents of which are incorporated herein by reference. technical field [0004] The field of the invention relates generally to power supplies, and more particularly to general purpose DC output power supplies. Background technique [0005] There are two main types of power supplies or converters: (1) AC to DC, and (2) DC to DC. An AC-to-DC power supply typically converts the AC line voltage as its input to a DC input voltage and is found, for example, in such applications as home audio amplifiers. Typically it can be implemented as a linear power supply or a switched mode power suppl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/14H02M1/44H02M3/07H02M7/04
Inventor O·约翰斯L·R·芬奇阿姆
Owner THX
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