POWER SUPPLY DEVICE
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United States of America Patent
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Issued Date -
Jan 23, 2025
app pub date -
Aug 25, 2022
filing date -
Aug 25, 2022
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Abstract
A power supply device according to an embodiment of the present invention is a power supply device for supplying power to a heating element, the power supply device comprising: a power supply unit which supplies power to the heating element; a current sensing unit which measures a current flowing through the heating element according to the power supplied by the power supply unit; a control unit which changes the feedback resistance of the power supply unit on the basis of the current measured by the current sensing unit; and a feedback resistor, the resistance of which is varied according to a control signal of the control unit, wherein the power supplied by the power supply unit varies according to the feedback resistance.
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