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6248983 |
Heater control apparatus with variable input voltage rectification
A heater control apparatus wherein a voltage level of the power supply is discriminated by an input voltage discrimination circuit, and in case that an input voltage applied by an AC power supply...
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6246034 |
Multi-period cycle-skipping for low flicker, fine-resolution power control
A cycle-skipping power control algorithm provides control signal patterns based on generating a number of core patterns corresponding to main power levels and alternating between the core patterns...
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6236025 |
Acoustic sensing system for boil state detection and method for determining boil state
A cooking range with an acoustic sensing system for determining the boil state of the contents of a cooking utensil. The acoustic sensing system, which includes at least one acoustic sensor, is...
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6229957 |
Physiological fluid warming process and apparatus
The present invention provides both a process and apparatus for rapidly warming and delivering relatively high volumes of a physiological fluid. Unique to this invention is the ability to warm and...
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6222162 |
Electric blanket and control
An electric blanket includes a heating element extending through the blanket so that, upon receiving electric current from a power source, the element heats the blanket. A regulator circuit is...
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6218647 |
Method and apparatus for using direct current to detect ground faults in a shielded heater wire
An ice and snow melting system includes at least one sensor configured for sensing a temperature or moisture associated with an ambient environment and providing a signal indicative thereof. A...
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6218643 |
Power supplying apparatus for automotive part
A power supplying apparatus for automotive parts can prevent not only wasteful power consumption even if an electric heater is short-circuited, but also any adverse effects on engine operation...
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6198078 |
Temperature control for a toaster oven
A toaster broiler oven with an NTC temperature probe located within the oven chamber and a controller that controls the heater of the oven in a thermostat operation for non-toasting modes and in a...
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6188049 |
Apparatus and method for controlling heater of air-fuel ratio sensor in internal combustion engine
An initial power feed quantity to be provided at the start to an electric heater equipped to an air-fuel ratio sensor is set corresponding to the temperature of a sensor element, and at the same...
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6177657 |
Image forming apparatus with control wave number setting means
An image heating apparatus has a heater for generating heat when an electric power is supplied from a commercial power source to the heater, a temperature detecting element for detecting a...
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6177656 |
Method and apparatus for controlling heating and cooling in segments of a fiber glass bushing
A supplemental controller for a fiber glass bushing actively performs heating and cooling of a connected segment of the bushing which is otherwise controlled by a primary controller. In one...
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6172342 |
Steering wheel heating system
A steering wheel heating system (10) includes a modular controller (18) electrically connected to a heating element (12) and temperature sensor (20) disposed beneath the surface of a rim portion...
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6172343 |
Heater and heater control with selective power rating
A heater having selective power rating includes a source of electric current, at least one heating unit and at least one electric conductor having an input and an output. Each conductor is...
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6157010 |
Heater control device
A heater control device that prevents a flickering by driving a fixing heater in a phase controlling at a fixed phase angle for predetermined duration when an image forming apparatus starts power...
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6137091 |
Electric cooker
Due to a bimetallic contact point, a fine control is out of sight. Further, dispersion of bimetal characteristics and poor durability of a contact point cause problems, particularly in maintenance...
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6118106 |
Apparatus for controlling an electric heater energized from a single voltage alternating current supply
Apparatus is described for controlling an electric heater incorporating at least one electric heating element (2A, 2B, 2C) and energized from a single voltage alternating current supply (8). The...
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6118104 |
Method and apparatus for boil state detection based on acoustic signal features
The present invention provides a method of determining the boil states of a liquid as measured by an acoustic sensor which measures the acoustic signal generated by the liquid as it is heated. The...
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6111230 |
Method and apparatus for supplying AC power while meeting the European flicker and harmonic requirements
An improved control method is provided that combines conventional ON-OFF control and conventional phase-angle control to reduce the AC inrush current to an electrical load, such as a tungsten...
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6107610 |
Power factor correction system for a resistive load device
A power factor correction system includes a sensing device in communication with a power supply to measure the line voltage on conventional service lines and detect any voltage fluxuations. A...
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6104009 |
Electrical appliance having user proximity sensor
An electric clothes iron with circuitry for automatically disabling power to the iron when the iron is left unattended for a certain period of time. The circuitry includes a circuit for controlling...
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6100510 |
Heating unit incorporating a temperature sensor
A control device includes both a heating element and a temperature sensor. The control device has the form of a Wheatstone bridge which applies sensing current to the heating element. When the...
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6097007 |
Aquarium water temperature controller
An aquarium water temperature controller, which includes a glass casing, an inner tube mounted within the glass casing, an electric heating element mounted in the glass casing and connected to the...
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6093916 |
Control device with first and second power control elements to control heater drive apparatus
The present invention relates to driving of a heater of a fixing unit in an image process apparatus. In case of driving first and second heaters by using a constant voltage output control circuit,...
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6091061 |
System for reducing radial leaks in a regenerative air heater for thermal equipment
The invention relates to a system for reducing radial leaks in an air heater for thermal equipment, the heater being of the type including a rotor fitted with a plurality of heater elements...
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6084218 |
Spa heater temperature control circuit
A heater assembly for use with spas, hot tubs and the like, includes a control circuit which controls the application of electrical power to the heater. A control circuit controls application of...
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6080971 |
Fluid heater with improved heating elements controller
An electrically powered water heater includes a plurality of heating elements for substantially instantaneous heating of fluid passing through the heater. A controller for powering the plurality of...
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6064044 |
Automated bottle temperature control system
An Automated Bottle Temperature Control System 10 is provided having a main DC power source 34, a water temperature sensing and control means 38, a water level compliance circuit 58, a bottle...
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6060697 |
Substrate processing apparatus having regulated power consumption and method therefor
A substrate processing apparatus reduces an instantaneous maximum power consumption at turn-on. Power receiving parts of a plurality of processing units are connected to one end of a turn-on switch...
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6060698 |
Method of controlling the operation of a cooking appliance
An integrated circuit constructed to provide control functions to a toaster oven cooking appliance. Said control functions including compensation for input voltage fluctuations, compensation for...
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6054689 |
Printing head and printing apparatus using same
Heating elements and logic circuits are provided on the base board of a printing head, and noise inhibiting circuit having a hysteresis characteristic are provided between the logic circuits and...
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6040560 |
Power controller and method of operating an electrical smoking system
A novel controller in an electrical smoking system and method, wherein the method includes the steps of: establishing a preferred thermal pathway to be executed with each heater activation...
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6034359 |
Electrical resistance cooking apparatus with electronic control
This is an apparatus for producing prepared food by electrical conduction automatically as disclosed. A control circuit senses the rate of change of current conducted through food as a function of...
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6031210 |
Electrical circuit for supplying power
The invention is directed to an electric circuit configuration (1) for an electrical load, in particular for an electric hair dryer, a fan heater or the like. The circuit configuration (1)...
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6023053 |
Laser output measuring apparatus
A laser beam LB, which has entered a housing, travels via a reflection mirror and through a beam diffusion plate, ND filters 42 and a visible rays cut-off filter 44 to impinge on a beam receiving...
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6020576 |
Temperature and windshield crack detector
An apparatus and method for temperature sensing and for detecting cracks or breakage of a windshield. A resistance element is connected to the windshield and a resistance monitoring circuit is...
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6018151 |
Predictive fusing system for use in electrophotographic printers and copiers
When the media enters the fuser, the added thermal load causes the fuser temperature to dip. Eventually, the control system compensates for the thermal load and stabilizes the fuser temperature at...
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6018152 |
Method and device for de-icing conductors of a bundle of conductors
A method and device for removing ice from overhead conductors of a bundle of conductors or preventing an accumulation of ice on these conductors. The method includes forcing the entire current load...
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6002114 |
Control device for an electric water heater
A control device installed in an electric water heater to control its operation, the control device including a water temperature control circuit and a power control circuit, the water temperature...
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5998769 |
Device for the control of an electrical machine
Disclosed is a device for controlling the operation of a machine comprising at least one measurement sensor, one circuit to control this operation as a function of a signal sent out by the sensor...
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5986242 |
Heater control device using phase angle control
The control circuit includes: a series circuit of a first triac and a reactor; and a second triac in parallel with this series circuit so as to perform control of activation of a fixing heater....
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5986241 |
Heating control system for heater provided in laser printer
A heater temperature control circuit for controlling a temperature of, for example, a heater incorporated in a laser printer for fixing a toner image on a recording material includes a voltage...
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5981918 |
Circuit for temperature-dependent regulation of the heating current of seat heaters
A circuit is provided for temperature-dependent control of the heating current of seat heaters to detect with a high functional reliability an interruption in the lead wire to a temperature element...
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5951900 |
Automatic temperature measurement based power control device
The automatic temperature measurement based power control device, preferentially on the pot lid, allows for wire or wireless selective power control of one or more power sources through...
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5948304 |
Water heater with proportional band temperature control for improved thermal efficiency
A water heater having a water tank and a electric resistance heating element extending into the water tank for heating water in the tank. The water heater includes a proportional band temperature...
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5939872 |
Thermal overload protection system providing supply voltage reduction in discrete steps at predetermined temperature thresholds
A power supply control system which prevents thermal overload of the apparatus to which power is being supplied. The supply voltage is controlled so that as the temperature of the apparatus...
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5938960 |
Timer with adjustable time control based on an RC oscillator with a variable resistor, and toaster including such a timer
An RC oscillator having an oscillation frequency which is controllable by supplying a step voltage signal to a series arrangement of a capacitor and a resistor, the oscillation frequency being...
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5932128 |
Switching control system for heating panel with leakage current cancellation
A heating panel has a substrate with a resistive heating material disposed thereon. The substrate can be metal with an insulating layer disposed between the substrate and the heating layer....
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5928546 |
Electrical resistance cooker and automatic circuit controller
An automatic circuit controller for cooking food interposed between electrodes connected with a source of AC by electrical resistance in which the resistance increases until the food is cooked and...
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5908572 |
Driving method of ceramic heating element for an infrared ray source
A ceramic heating element has been conventionally driven by direct-current voltage, but the direct-current voltage causes a problem in the heating element. Therefore, in a method of the present...
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5897804 |
Method and means of heating and controlling the temperatures in a sauna
A control circuit for a sauna compartment has an electrical heater therein connected to a control circuit. The control circuit allows a high voltage to flow through a first heating circuit to...
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