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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0586865 (1990-09-20) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 381 인용 특허 : 0 |
A self-regulating heater is provided by placing ferrite-type body member, which is highly lossy when exposed to a high frequency magnetic field and has a predetermined Curie temperature, on or around a central conductor which is connected or is adapted to be connected to a power source which provide
A self-regulating heater is provided by placing ferrite-type body member, which is highly lossy when exposed to a high frequency magnetic field and has a predetermined Curie temperature, on or around a central conductor which is connected or is adapted to be connected to a power source which provides high frequency alternating current to the conductor. The current passing through the central conductor produces a magnetic field around the conductor, which causes the ferrite-type body to be heated by internal losses to its Curie temperature. The heater self-regulates at the Curie temperature of the ferrite-type body. The power source is preferably a constant current, impedance matched power source. The ferrite-type body member can be ferromagnetic or ferrimagnetic. The ferrite-type body is preferably ferrimagnetic, such as ferrite beads, rings, and the like, which heat by hysteresis losses.
A self-regulating heating device having a ferrite-type body having a Curie temperature, Tc, the device comprising: central conductor means for carrying a high frequency alternating current and producing a magnetic field around the exterior thereof; a power supply connected to the central conductor m
A self-regulating heating device having a ferrite-type body having a Curie temperature, Tc, the device comprising: central conductor means for carrying a high frequency alternating current and producing a magnetic field around the exterior thereof; a power supply connected to the central conductor means for supplying the high frequency alternating current to the conductor means at sufficient power to cause the ferrite-type body to heat by internal losses to its Curie temperature; and said ferrite-type body positioned in the magnetic field of the central conductor means and being sufficiently lossy to be capable of producing sufficient heat by internal losses in said magnetic field to raise the temperature of the ferrite-type body to Tc; whereby the heating device self-regulates at Tc when powered by said power supply at a sufficiently high frequency and at sufficient power to cause the ferrite-type body to heat to Tc by internal losses.
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