Temperature self-regulating food delivery systems are provided having a magnetic induction heater (32, 126) and an associated food container (76, 124) equipped with an essentially permanent ferromagnetic heating element (82, 100, 128). The heater (32, 126) and heating elements (82,100, 128) are designed so as to heat the element (82, 100, 128) to a user-selected regulation temperature when the elements (82, 100, 128) are coupled with the heater's magnetic field, and to maintain the temperature in the vicinity of the regulation temperature indefinitely temperature regulation is a heating achieved by periodically determining at least two parameters of the heaters resonant circuits related to the amplitude of the resonant current passing therethrough during heating and responsively altering the field strength of the magnetic field. Preferably, the value of the resonant circuit amplitude and the rate of change of the amplitude are determine.

Os sistemas self-regulating da entrega do alimento da temperatura são fornecidos tendo um calefator da indução magnética (32, 126) e um recipiente associado do alimento (76, 124) equipado com um elemento de heating ferromagnetic essencialmente permanente (82, 100, 128). O calefator (32, 126) e os elementos de heating (82.100, 128) são projetados para aquecer o elemento (82, 100, 128) a uma temperatura regulamentar usuário-selecionada quando os elementos (82, 100, 128) são acoplados com o campo magnético do calefator, e manter a temperatura na vizinhança do regulamento de temperatura regulamentar da temperatura indefinidamente são um heating conseguido periòdicamente determinando ao menos dois parâmetros dos circuitos resonant dos calefatores relacionados à amplitude da corrente resonant que passa therethrough durante o heating e que altera responsiva a força do campo do campo magnético. Preferivelmente, o valor da amplitude do circuito resonant e a taxa de mudança da amplitude são determinam.

 
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