A temperature voltage generator includes a control voltage generation circuit configured to receive a reference voltage and to output a control voltage that changes according to temperature, a temperature voltage generation circuit configured to amplify the control voltage and to output a temperature voltage that changes according to temperature, and a linear compensation circuit connected to the control voltage generation circuit and configured to improve the linearity of the temperature voltage.

A circuit arrangement comprises a first branch comprising a resistor of variable resistance and a diode-connected bipolar transistor and a second branch comprising a resistor of fixed resistance and another diode-connected bipolar transistor. A control loop reproduces a voltage drop at the resistor of variable resistance to a voltage drop at the resistor of fixed resistance. Output terminals are connected to the bipolar transistors to supply a differential voltage. The circuit arrangement may be used as an analog frontend circuit in a gas sensor or a temperature sensor arrangement.

A circuit includes a temperature-sensitive voltage divider. The temperature-sensitive voltage divider includes a temperature-sensitive resistor and a second resistor having a first terminal coupled to a first terminal of the temperature-sensitive resistor. A temperature signal is generated at a first node coupled to the first terminal of the temperature-sensitive resistor. Detection logic is coupled to the first node to generate a detection signal responsive to the temperature signal.

A circuit includes a temperature-sensitive voltage divider. The temperature-sensitive voltage divider includes a temperature-sensitive resistor and a second resistor having a first terminal coupled to a first terminal of the temperature-sensitive resistor. A temperature signal is generated at a first node coupled to the first terminal of the temperature-sensitive resistor. Detection logic is coupled to the first node to generate a detection signal responsive to the temperature signal.

A temperature sensing apparatus includes a first voltage generator including a first resistor and a first temperature sensor, a second voltage generator that generates a control voltage, a voltage adjuster connected in parallel with the first resistor and that adjusts a voltage applied to the first temperature sensor based on the control voltage, and a controller that senses a temperature based on the voltage applied to the first temperature sensor, and the first temperature sensor is a device that converts a temperature into a voltage.

A temperature computing parameter providing circuit, configured to generate sensing voltage values and calibrated voltage values as temperature computing parameters for a target electronic device, including: a parameter computing circuit, configured to compute a reference voltage, which is a cross voltage of a reference resistor coupled to the target electronic device in series, to generate a reference voltage value, and to compute the sensing voltage, which is a cross voltage of the target electronic device, to generate the sensing voltage value; a reference temperature sensing circuit, configured to sense a current reference temperature of the reference resistor; and a computing circuit, configured to calibrate the reference voltage value to generate the calibrated voltage value according to a calibrating function and the current reference temperature. The calibrating function corresponds to a resistance-temperature variation function.

A dental oven for treatment of dental materials having one or more electric heating elements which extends adjacent to a heating space and is controlled by a heating controller. The heating controller regulates the temperature in the heating chamber and includes an output terminal for the heating element and an input terminal for temperature detection, which is electrically connected to a temperature detecting device, wherein the temperature detecting device has the one or more heating elements. The temperature sensing device includes a compensation device for compensation of nonlinearities at temperatures above 700° C. or in nonlinearities of the resistance of the heating element. The heating controller controls its output port based on the detected resistance of the heating element and on the compensation device.

A dental oven for treatment of dental materials having one or more electric heating elements which extends adjacent to a heating space and is controlled by a heating controller. The heating controller regulates the temperature in the heating chamber and includes an output terminal for the heating element and an input terminal for temperature detection, which is electrically connected to a temperature detecting device, wherein the temperature detecting device has the one or more heating elements. The temperature sensing device includes a compensation device for compensation of nonlinearities at temperatures above 700° C. or in nonlinearities of the resistance of the heating element. The heating controller controls its output port based on the detected resistance of the heating element and on the compensation device.

A temperature measurement circuit for measuring a temperature using a temperature sensitive element includes a voltage control circuit configured to apply a control voltage to the temperature sensitive element. The temperature measurement circuit includes a first switching circuit configured to switch levels of the control voltage based on a current flowing through the temperature sensitive element. The temperature measurement circuit includes a conversion circuit configured to convert the current flowing through the temperature sensitive element into a voltage level corresponding to the measured temperature, by using predetermined conversion gain. The temperature measurement circuit includes a second switching circuit configured to switch values of the conversion gain based on the voltage level.

A temperature measurement circuit for measuring a temperature using a temperature sensitive element includes a voltage control circuit configured to apply a control voltage to the temperature sensitive element. The temperature measurement circuit includes a first switching circuit configured to switch levels of the control voltage based on a current flowing through the temperature sensitive element. The temperature measurement circuit includes a conversion circuit configured to convert the current flowing through the temperature sensitive element into a voltage level corresponding to the measured temperature, by using predetermined conversion gain. The temperature measurement circuit includes a second switching circuit configured to switch values of the conversion gain based on the voltage level.