초록 ▼

A heater, humidifier or fan has a control circuit including a microcontroller having an algorithm for controlling power to the appliance. The power to the appliance is varied in accordance with a target temperature/humidity signal and an actual temperature/humidity signal. Preferably, a sensor elect

A heater, humidifier or fan has a control circuit including a microcontroller having an algorithm for controlling power to the appliance. The power to the appliance is varied in accordance with a target temperature/humidity signal and an actual temperature/humidity signal. Preferably, a sensor electrically connected to a clock oscillator input of the microcontroller is used to vary the clock oscillator frequency in response to changes in ambient temperature/humidity. The frequency of the clock oscillator varies in response to changes in temperature/humidity and the microcontroller in response to the frequency of the clock oscillator variably controls the power to the appliance.

대표청구항 ▼

[What is claimed is:] [1.]a microprocessor including an algorithm;a sensor responsive to ambient temperature and/or humidity, the sensor being electrically connected to the microprocessor for determining ambient temperature and/or humidity; anda setting device electrically connected to the microproc

[What is claimed is:] [1.]a microprocessor including an algorithm;a sensor responsive to ambient temperature and/or humidity, the sensor being electrically connected to the microprocessor for determining ambient temperature and/or humidity; anda setting device electrically connected to the microprocessor for setting a desired target temperature and/or humidity value;wherein the microprocessor compares the ambient temperature and/or humidity value to the target temperature and/or humidity value and generates a control signal in response thereto for controlling an output of the appliance, the control signal providing a substantially maximum power level to the appliance when the difference between the compared values of ambient temperature and/or humidity and the target temperature and/or humidity is greater than about ten units, and the control signal providing approximately one-half maximum power level to the appliance when the difference between the compared values of ambient temperature and/or humidity and the target temperature and/or humidity is equal to or below about ten units but greater than about one unit and wherein the controller circuit terminates power to the appliance when the difference between the ambient temperature and/or humidity and the target temperature and/or humidity is equal to or less than about one unit.