Electric rice cooker to heat in cooking rice by relying on hot plate at bottom of pot, which is made of aluminium sheet with electrical coils heat inside, which is controlled by a power structure of automatic electric rice cooker is listed as shown. In the middle of a round hole with hole heat pad. Inside the hole with soft magnetic heat sensitive magnetic oxide. When temperature is under 100 ํ C or lower will be permanent magnetic vacuum, but when the temperature rises to 103 ํ C. The loss of a permanent magnetic vacuum When you press the switch, the electric rice cooker as shown (1) axis of the magnet will attract to flick the switch to stick with soft magnetic sensitive heat cause electricity to flow into the heating coils. Begin to heat to cooking rice. After boiling in the pot in the rice cooker, and then gradually decreased. When the water begins to evaporate and dry until the temperature inside the boiler exceeds 100 ํ C. Enough high temperature reaches 103 ํ C Soft magnet will not be permanent magnetic vacuum. Axis of the switches will be pulled down from the tensile strength of the coil spring and the permanent magnetic weight is pressing down makes the tangent points separately, so there are no batteries to heat winding. As shown in figure (2) at the same time, the electrical system is linked to a hot working (not shown in image) Maintain a temperature of approximately 70 rice ํ C
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