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Patent

Portable power supply

Erez Margalit
TLDR
In this paper, an electrical power converter circuit including a photovoltaic cell and a power supply adapted to control a low power output of the cell is described. But the power supply includes an input switch, an overvoltage detector, an under voltage detector, a rechargeable battery, a DC to DC converter circuit, an output capacitor, a delay element and an output switch.
Abstract
Disclosed is an electrical power converter circuit including a photovoltaic cell and a power supply adapted to control a low power output of the photovoltaic cell. The power supply includes an input switch, an over-voltage detector, an under voltage detector, a rechargeable battery, a DC to DC converter circuit, an output capacitor, a delay element and an output switch. An item of luggage is adapted to support and carry the photovoltaic cell, power supply, and optional ancillary equipment.

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Citations
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Patent

Photovoltaic DC/DC micro-converter

TL;DR: In this paper, a photo-voltaic (PV) power generating system and a control system for PV array string-level control and PV modules serially connected into strings of PV modules are presented.
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TL;DR: A power distribution system includes a direct current (DC) power source and an appliance selection unit for selecting one or more appliances that can be operated with an available power of the DC power source as mentioned in this paper.
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Apparatus for Storing and Charging Electronic Devices

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TL;DR: In this paper, an apparatus is provided for conveying and charging portable electronic devices, consisting of internal and/or external electrical interfaces (e.g., 120 volt AC, 12 volt DC, USB) electrically coupled to an adapter for plugging into an external power source.
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TL;DR: In this article, a step down type DC-DC power-supply device implements both the stabilization of the control loop and the responsibility at the same time, where an output power signal is fed back to an error amplifier after having passed through a CR smoothing filter provided independently of a power LC smoothing filtering.
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Portable autonomous material processing system

TL;DR: A portable plasma arc torch system can be used for processing materials as discussed by the authors, which includes a replaceable or rechargeable power source and a rechargeable gas source, and a controller communicates with at least one of the power source or the gas source.
References
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Patent

Portable Power Supply

TL;DR: A portable power supply includes a housing, and power circuitry providing an output AC waveform having a first positive voltage step level, a second higher voltage step levels, a third higher positive voltage level, an intermediate step level and a lower negative voltage level as mentioned in this paper.