Power supply device
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United States of America Patent
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Nov 28, 2017
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N/A
app pub date -
Nov 9, 2012
filing date -
Nov 9, 2012
priority date (Note) -
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Abstract
A power supply device for supplying power to a load by combining a secondary battery and a capacitor includes a switching element which switches the supply of power to the load from the capacitor, a DC-DC converter which enables a voltage of the capacitor to be stepped up and supplied to the load and a control unit which enables power to be supplied to the load by pulse-controlling the switching element, controlling the DC-DC converter to output a pulse current alternately with the switching element and combining the alternately output pulse currents if the voltage of the capacitor drops below a minimum voltage capable of driving the load.
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