-
公开(公告)号：US20210372859A1
公开(公告)日：2021-12-02
申请号：US17402796
申请日：2021-08-16
发明人： Chan-Hong CHERN , Kun-Lung CHEN , Ming Hsien TSAI
摘要： 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.
-
公开(公告)号：US20210278287A1
公开(公告)日：2021-09-09
申请号：US17192438
申请日：2021-03-04
发明人： Philippe GALY , Renan LETHIECQ
摘要： An electronic device includes a module that delivers a positive temperature coefficient output voltage at an output terminal. A thermistor includes a first MOS transistor operating in weak inversion mode and having a negative temperature coefficient drain-source resistance and whose source is coupled to the output terminal. A current source coupled to the output terminal operates to impose the drain-source current of the first transistor.
-
公开(公告)号：US10800383B2
公开(公告)日：2020-10-13
申请号：US16035304
申请日：2018-07-13
发明人： Jong Min Park , Nak Kyoung Kong , Seung Hyeok Chang , Ki Hong Lee , Nam Joon Yoo , Yong Pyo Hong
摘要： The present disclosure provides an optical sensor having constant sensitivity regardless of changes in temperature. The optical sensor may include a light emitting device configured to emit light; a light receiving device configured to receive the light emitted from the light emitting device, and to output current based on an intensity of the light; a temperature sensor coupled with the light emitting device, and having electrical resistance varying with temperature; and a microcontroller including a first channel for supplying first current directly to the light emitting device, a second channel for supplying second current to the light emitting device via the temperature sensor, and a third channel for receiving the current output from the light receiving device.
-
公开(公告)号：US10663355B2
公开(公告)日：2020-05-26
申请号：US15639492
申请日：2017-06-30
摘要： A device having a first terminal region and a second terminal region. The first terminal region includes fine-tune (FT) metal stripes that are separated from each other by a first distance along the longitudinal direction. The second terminal region is spaced apart from the first terminal region by at least an inter-terminal distance. The second terminal region includes coarse-tune (CT) metal stripes that are separated from each other by a second distance along the longitudinal direction. The second distance is greater than the first distance, and the inter-terminal distance greater than the second distance. Each of the FT metal stripes may be selected as a first access location, and each of the CT metal stripes may be selected as a second access location. A pair of selected first and second access locations access a sheet resistance defined by a distance therebetween.
-
公开(公告)号：US20190242759A1
公开(公告)日：2019-08-08
申请号：US16387649
申请日：2019-04-18
申请人： DENSO CORPORATION
发明人： Shogo HIKOSAKA
CPC分类号： G01K7/25 , G01K7/14 , H03G1/0041 , H03M1/18
摘要： A thermistor drive circuit includes a plurality of driving resistors, at least one current correction resistor, a voltage measurement unit and a controller. The driving resistors are selectively connected to a thermistor for correcting a temperature characteristic of the thermistor whose resistance value changes in accordance with a temperature to be detected. The current correction resistor is selectively connected between a power supply and a ground. The voltage measurement unit measures a terminal voltage of the thermistor. The controller switches connection states of the driving resistors according to the terminal voltage. When switching the connection states of the driving resistors, the controller also switches a connection state of the current correction resistor to suppress a fluctuation of a power supply current before and after the switching of the connection states of the driving resistors.
-
公开(公告)号：US20190033142A1
公开(公告)日：2019-01-31
申请号：US16069589
申请日：2017-01-27
摘要： To provide a temperature detection circuit that can detect the high-temperature anomaly of a fuser roller or the like with high accuracy over a wider range of temperature. The temperature detection circuit includes a differential output detection circuit portion C1 having a detection thermistor and a compensation thermistor configured to amplify a difference between an output of the detection thermistor and an output of the compensation thermistor and to detect it as a first differential output; a second differential amplifier portion C2 configured to amplify a difference between the first differential output and the output of the compensation thermistor and to output it as a second differential output; and an AD converter portion C3 configured to convert the output of the compensation thermistor and the second differential output into digital values.
-
公开(公告)号：US20190003900A1
公开(公告)日：2019-01-03
申请号：US15639492
申请日：2017-06-30
CPC分类号： G01K7/25 , G01K7/023 , G01K7/223 , G01K15/005 , G01K2007/163
摘要： A device having a first terminal region and a second terminal region. The first terminal region includes fine-tune (FT) metal stripes that are separated from each other by a first distance along the longitudinal direction. The second terminal region is spaced apart from the first terminal region by at least an inter-terminal distance. The second terminal region includes coarse-tune (CT) metal stripes that are separated from each other by a second distance along the longitudinal direction. The second distance is greater than the first distance, and the inter-terminal distance greater than the second distance. Each of the FT metal stripes may be selected as a first access location, and each of the CT metal stripes may be selected as a second access location. A pair of selected first and second access locations access a sheet resistance defined by a distance therebetween.
-
公开(公告)号：US20180307256A1
公开(公告)日：2018-10-25
申请号：US15925589
申请日：2018-03-19
发明人： Chen-Hui Chan , Wei-Hsu Chang , Ta-Yung Yang
CPC分类号： G05D23/24 , G01K7/25 , H01C7/04 , H02H7/0852
摘要： An interface device includes: at least one configuration channel terminal for communicating configuration information, wherein whether the interface device itself is in connection and whether the interface device itself is at a high voltage side or a low voltage side are determined according to a voltage or current status at the configuration channel terminal; a multi-functional transmission line, which includes a thermistor; and a temperature monitor circuit, coupled to the multi-functional transmission line, for sensing a temperature status to generate a temperature sensing signal. When two interface devices are connected with each other, the thermistor and the temperature monitor circuit can be located together in one of the interface devices or separately located in different interface devices.
-
公开(公告)号：US20180180490A1
公开(公告)日：2018-06-28
申请号：US15736015
申请日：2016-06-23
发明人： Pascal BARBIER , Jacques ROCHER
CPC分类号： G01K7/25 , F01N3/2066 , F01N3/208 , F01N9/00 , F01N2610/1453 , F01N2900/1811 , F01N2900/1821 , F02D41/20 , F02D2041/2027 , F02D2041/2065 , F02D2041/2072 , F02M51/005 , F02M57/005 , G01K7/22 , G01K2205/00
摘要： Temperature measuring device for measuring the temperature of a member, the member including a component controlled by a control signal, active at most during at least one limited activity interval, and transmitted to the component via two wires, a temperature probe connected to the two wires, in parallel with the component, and a diode, connected between a terminal of the component and a terminal of the probe connected to the same wire, in order to allow the passage of a current in the component only in a first direction, the temperature measurement being performed by a current flowing in a second direction, opposite to the first direction, outside of the activity interval.
-
公开(公告)号：US09618395B2
公开(公告)日：2017-04-11
申请号：US14072790
申请日：2013-11-06
发明人： Hiroyasu Ozaki , Koichi Takaku , Taneaki Miura , Koichi Kato , Saneto Asano
摘要： A temperature detecting circuit includes a first thermistor, a second thermistor, a first pull-up resistor, a second pull-up resistor, and a controller. The controller is configured to sense a temperature based on a voltage signal from the first thermistor if a temperature corresponding to a voltage signal from one of the first thermistor and the second thermistor is below a threshold temperature. The controller is configured to sense a temperature based on a voltage signal from the second thermistor if a temperature corresponding to a voltage signal from one of the first thermistor and the second thermistor is higher than or equal to the threshold temperature. A resistance Ra of the first thermistor, a resistance Rb of the second thermistor, a resistance Rc of the first pull-up resistor, and a resistance Rd of the second pull-up resistor have a relationship expressed by Ra Rd.
-
-
-
-
-
-
-
-
-
搜索结果
120 条记录 (耗时 0.019 秒)