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    • 4. 发明授权
    • Methods and apparatus for a variable resistor configured to compensate for non-linearities in a heating element circuit
    • 用于补偿加热元件电路中的非线性的可变电阻器的方法和装置
    • US07002114B2
    • 2006-02-21
    • US10648571
    • 2003-08-26
    • Mengtao Pete HeCarl TriplettMary J. ConwayDavid RinaldisMichael Strasser
    • Mengtao Pete HeCarl TriplettMary J. ConwayDavid RinaldisMichael Strasser
    • H05B1/02H01C10/44
    • H05B1/0288A61L9/03G05D23/2401
    • An improved variable resistor at least partially compensates for non-linearities in an electrical circuit containing a heating element, for example, a thin-film heating element. A controllable heater includes a heating element, a voltage source (for example, a standard AC electrical outlet) coupled to the heating element, and a variable resistor coupled to the heating element and voltage source. The variable resistor includes a fixed resistive element (for example, one or more thin-film resistors) and a moveable element such as a slider control. The moveable element adjustably contacts the fixed resistive element at a contact point associated with the position such that the variable resistor has a resistance that is at least partially non-linearly related to the position, but wherein the heating element has a dissipated power that is at least partially linearly related to the position of the variable resistor. Such a system may be used in conjunction with a vapor-delivery device to provide more linear control over the intensity of fragrance provided within an environment.
    • 改进的可变电阻器至少部分地补偿包含加热元件的电路中的非线性,例如薄膜加热元件。 可控加热器包括加热元件,耦合到加热元件的电压源(例如,标准AC电插座),以及耦合到加热元件和电压源的可变电阻器。 可变电阻器包括固定电阻元件(例如,一个或多个薄膜电阻器)和诸如滑块控制的可移动元件。 可移动元件在与位置相关联的接触点处可调节地接触固定电阻元件,使得可变电阻器具有至少部分地与该位置非线性相关的电阻,但是其中加热元件具有位于 与可变电阻器的位置最少部分线性相关。 这样的系统可以与蒸气输送装置一起使用,以提供对在环境中提供的香料的强度的更多的线性控制。