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7629760 |
Controlling device for range switch mechanism
A controlling device includes a range switch mechanism, range switch operating means, operation frequency monitoring means, and heat generation limit controlling means. The range switch mechanism...
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7490018 |
Thermal management system
A thermal management system according to an embodiment of the present invention includes first and second thermo sensors embedded in a chip, a trimming control circuit which determines a...
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7242323 |
Electronic device having touch sensor
A variable capacitance unit is formed between one portion of a human body and an opposed electrode facing it through a casing of a robot toy (electronic device) when the one portion of the human...
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7180211 |
Temperature sensor
A temperature sensor is comprised of a device adapted to provide a first signal having a parameter responsive to temperature. A generator provides a reference signal having a parameter that is...
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6674185 |
Temperature sensor circuit having trimming function
A temperature sensor circuit includes a temperature detecting circuit, a preset value storing circuit, and a current supplying circuit. The temperature detecting circuit is configured to generate a...
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6079121 |
Humidity-modulated dual-setpoint temperature controller
A humidity-modulated dual-setpoint temperature controller is disclosed in which the two setpoints of the temperature controller are adjusted as a function of measured humidity. Parameters other...
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5955909 |
Device for monitoring chip temperature
A device for monitoring chip temperature of a switch output stage having a switch element (100, 106) that has a first circuit (10) for generating a signal (pvon) corresponding to the dissipated...
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5862170 |
Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors
A method and apparatus for temperature measurement especially suited for low cost, low power, moderate accuracy implementation. It uses a sensor whose resistance varies in a known manner, either...
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5796290 |
Temperature detection method and circuit using MOSFET
A temperature detection circuit using a threshold voltage of a MOSFET with a further improved detection characteristic. The circuit has first and second lateral MOSFETs formed in a well region of a...
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5760636 |
Adjusting clock frequency and voltage supplied to a processor in a computer system
A method and apparatus for adjusting the clock frequency and voltage supplied to an integrated circuit. First, a signal is sent to the clock, and in response, the clock lowers the clock frequency...
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5737852 |
Dryness control for clothes dryer
A dryness control circuit for a household clothes dryer including a power supply circuit and a moisture sensing circuit. The power supply circuit converts high voltage AC power into low voltage, DC...
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5519354 |
Integrated circuit temperature sensor with a programmable offset
An IC temperature sensor with a programmable offset generates an output voltage Vo over a desired temperature range that is a PTAT voltage VPTAT shifted by an offset voltage Voff. A band gap cell...
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5500547 |
Integrated semiconductor device with temperature sensing circuit and method for operating same
A two-way conductive directional circuit formed in a polycrystalline silicon layer separated by an insulation film from a semiconductive element is one-way biased for sensing a temperature of the...
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5367265 |
Moisture-sensing controller for a clothes dryer
A moisture-sensing circuit for a clothes dryer separates the moisture-sensing and timing functions in a way that minimizes undesirable interaction and reduces effects of tolerances in components,...
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5359234 |
Circuit and method of sensing process and temperature variation in an integrated circuit
A voltage controlled oscillator runs at full speed to generate an output frequency dependent on temperature and process variation. First and second clock signals are generated from the oscillator...
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4591743 |
Temperature compensated current sensing circuit
A metal resistor having a positive temperature coefficient of resistance is connected to a current source to develop a voltage drop that acts as an offset for a ΔVBE differential amplifier. Since ...
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4546320 |
Total temperature probe buffer amplifier
The elimination of undesirable thermally induced changes of electrical characteristics of signal components is accomplished three operational amplifier circuits. The first operational amplifier...
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4516054 |
Lamp protection arrangement
A light bulb protection arrangement including a lamp, a socket, and a junction socket having a base portion and a socket portion so as to attach the light bulb to the socket. The junction socket...
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4492933 |
Temperature compensation circuit for oscillator with parabolic characteristic
An improved temperature compensation circuit for an oscillator circuit having a frequency response that is parabolic with respect to temperature, including a time dependent ramp signal, an AC...
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4463274 |
Temperature compensation circuit for pressure sensor
A circuit is disclosed for temperature compensating the output voltage thereof with respect to undesireable temperature induced signals from a pressure transducer and/or the circuit itself. The...
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4422066 |
Condition sensor interface means
Two condition sensors of two entirely different types are selected and monitored by a single condition sensor interface means. The interface means provides for selection of the sensor to be...
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4331888 |
Temperature detecting apparatus
A temperature detecting apparatus having a first transistor connected in diode configuration or a first diode, with its forward current set in certain value. A second transistor has similar...
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4326171 |
Temperature compensating pressure sensor amplifier circuits
An amplifier circuit is disclosed for temperature compensating the output voltage thereof with respect to undesirable temperature induced signals from a silicon pressure transducer and/or from...
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4283638 |
Field effect transistor switched temperature control circuit
Two field effect transistor device means are utilized in conjunction with a special type of transformer having a low impedance primary winding and a high impedance primary winding to energize a...
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4267468 |
Temperature sensing circuit
An improved temperature sensing circuit as disclosed in which the voltage drop across a thermistor is compared to the voltage drop across a capacitor to produce a linear output proportional to...
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4237420 |
Temperature sensing circuit
A circuit for producing a digital output varying linearly with temperature changes by measuring the width of a pulse from a monostable multivibrator, in which the pulse is measured more than twice...
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4190804 |
Signal-conditioning circuits
A signal-conditioning circuit for use in conjunction with transducers measuring simultaneously steady state and fluctuating parameters, e.g. pressure. The circuit comprises low-pass filtering...
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4146803 |
Fire-responsive control device utilizing thyristors
In a thyristor fire-responsive control device including a fire detector which has a thyristor as output switching means, a control circuit is responsive to the detector. A controlled apparatus is...
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4117670 |
Dual slope temperature differential shutdown control for gas turbines
The inlet air temperature and the exhaust gas temperature of a gas turbine power plant are monitored and are utilized as a determining characteristic in a power output stabilization control...
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4117355 |
Temperature independent trigger pulse analysis circuit
To obtain input signals as a function of various types of input signals, R/C circuits are used to charge or discharge a capacitor, the charge state of which is sensed by a threshold stage. To...
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4079331 |
Amplifier system with special feedback circuits
A condition responsive element, disclosed as a negative temperature coefficient thermistor, operates in conjunction with a bridge circuit to provide a differential input to a special direct current...
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4041396 |
Environmentally sensitive transmit power maximizing circuitry and method
In a transmitter designed for periods of extended use, means for sensing the ambient temperature in which the transmitter would operate if activated and adjusting the initial output power of the...
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4007425 |
Temperature sensor using pulse width modulator for duty cycle control
The temperature controller senses the temperature unbalance and converts s into a DC voltage which is compared with an oscillator by a pulse width modulator. The output of pulse width modulator...
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3988682 |
Voltage ramp temperature controller
A temperature control circuitry for use in detecting the temperature of a vice and providing a programming voltage output for controlling a heating apparatus to vary the temperature of the device....
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3930201 |
Pulse source to provide a pulse train representative of movement of a shaft and a reference pulse representative of a reference position
Transducer elements, such as the teeth of a star-wheel are uniformly distributed around the circumference of a disk; one of the teeth is slit to form a double tooth with a gap therebetween, the...
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3927336 |
Self-adjusting condition-responsive control circuit
The output of an oscillator is normally continually varied within predetermined limits in response to a control signal to compensate for slow variations from a reference level of a monitored...
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3860875 |
THERMOCOUPLE-CONTROLLED OPERATIONAL AMPLIFIER CIRCUIT
A thermocouple-controlled operational amplifier circuit has a first impedance connected at one of its terminals to one input terminal to the operational amplifier. One lead of a thermocouple is...
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3860837 |
COMFORT CONTROL SYSTEM AND COMPONENTS THEREOF
A system for heating and/or cooling utilizing a new two-wire thermostat and/or a zero voltage switch. Plural stages of heating and/or cooling may be provided with a single two-wire thermostat. That...
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3825405 |
TEMPERATURE CONTROL SYSTEM FOR ROTARY KILNS
In a rotary kiln of the type having a plurality of temperature control units, each control unit being adapted to control the opening of the damper for a shell fan in accordance with the output...
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3814957 |
PRECISION TEMPERATURE CONTROLLER
A precision temperature controller utilizing a temperature sensitive resistive element in thermal relationship to an object to be heated, the element being connected in a bridge circuit to derive...
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3800300 |
CONDITION RESPONSIVE SIGNAL PRODUCING DEVICE
A circuit device for producing a signal indicative of a particular condition such as, for example, temperature, and for transmitting the signal to a remote location is disclosed herein and includes...
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3754139 |
INTERNAL COMBUSTION ENGINES WITH INFRA-RED DETECTION
A method of checking and/or varying the fuel to air mixture ratio of an internal combustion engine comprises measuring the intensity of the infra-red emission from the flame during combustion in...
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3743930 |
MOISTURE TESTER HAVING TEMPERATURE CONTROLLED VARIABLE TIME DELAY CIRCUIT
A time delay circuit for use with a grain moisture tester is disclosed including a differentiating circuit operative to delay the taking of a reading until the time rate of change of the output of...
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3725789 |
TEMPERATURE CONTROLLED CLOCKING OF LOGIC CIRCUITS
A variable frequency pulse generator whose pulse repetition rate is controlled as a function of temperature is used as a source of gating signals for a logic array so that the propagation delay of...
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3691405 |
THERMOCOUPLE RESPONSE TIME COMPENSATION CIRCUIT ARRANGEMENT
A circuit for use in a gas turbine engine system with a gas temperature-sensing thermocouple to compensate for time lag in the response of the thermocouple to gas temperature change and,...
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3665322 |
PRECISION CONVERTER/AMPLIFIER UTILIZING A COMPARATOR NETWORK AND A PAIR OF INTERNAL SIGNAL SOURCES
A precision converter or power amplifier of electrical signals comprised of a comparator bridge having a pair of isolated circuit branches matched for a particular voltage level. An input signal a...
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3651351 |
RAPIDLY ACTING CONDITION RESPONSIVE SWITCH
A rapidly acting condition responsive switch for selectively connecting an input circuit with an output circuit which includes a pair of silicon controlled rectifiers connected in inverse parallel...
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3649854 |
REGULATING ARRANGEMENT PREFERABLY FOR REGULATING THE TEMPERATURE IN HEATING SYSTEMS
A regulating arrangement comprises a control signal input bridge having a transistor amplifier connected as a diagonal and an electronic switching device connected in series in the bridge output....
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3645804 |
THERMAL TREATING CONTROL
A method for imparting to a metal or other body the predetermined effects of a specific thermal exposure at a preselected temperature T', but where the actual temperature of the body varies during...
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3636540 |
TEMPERATURE CONTROL ALARM SYSTEM
As described herein, a temperature alarm control system is provided which includes a plurality of temperature measuring devices which generate positive or negative signals in accordance with an...
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