Automatic heating apparatus
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United States of America Patent
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Jun 5, 2018
Issued Date -
Aug 11, 2016
app pub date -
Apr 24, 2015
filing date -
Feb 9, 2015
priority date (Note) -
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Abstract
A heating apparatus includes a power source, a heating unit, and a control unit. The control unit includes a transistor and a thermal resistor. The transistor is connected between the power source and the heating unit to control the power source to provide power to the heating unit. The thermal resistor is connected to the transistor. A resistance value of the thermal resistor changes along with ambient temperature to turn on or off the transistor to control the power source to provide power to the heating unit according the ambient temperature.
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