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公开(公告)号：US20210265085A1
公开(公告)日：2021-08-26
申请号：US17181527
申请日：2021-02-22
Applicant: Littelfuse, Inc.
Inventor： Efrem Fesshaie , Paulius Kabisius , Jianhua Chen , Rimantas Misevicius
Abstract: A self-limiting heater and method for building the self-limiting heater are disclosed. The self-limiting heater consists of a resistor and a PTC resistor coupled together in series with a power supply. Both resistive devices have good thermal coupling. The resistor has a minimal resistance change over changes in temperature while the resistance of the PTC resistor increases with an increase in temperature. The ohmic resistance ratio between the resistor and the PTC may be used to adjust the heater characteristics and limit the characteristic sharpness.
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公开(公告)号：US12125619B2
公开(公告)日：2024-10-22
申请号：US17181527
申请日：2021-02-22
Applicant: Littelfuse, Inc.
Inventor： Efrem Fesshaie , Paulius Kabisius , Jianhua Chen , Rimantas Misevicius
CPC classification number: H01C7/021 , H05B3/0014 , H05B2203/02 , H05B2203/035
Abstract: A self-limiting heater and method for building the self-limiting heater are disclosed. The self-limiting heater consists of a resistor and a PTC resistor coupled together in series with a power supply. Both resistive devices have good thermal coupling. The resistor has a minimal resistance change over changes in temperature while the resistance of the PTC resistor increases with an increase in temperature. The ohmic resistance ratio between the resistor and the PTC may be used to adjust the heater characteristics and limit the characteristic sharpness.
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公开(公告)号：US11686596B2
公开(公告)日：2023-06-27
申请号：US17208053
申请日：2021-03-22
Applicant: Littelfuse, Inc.
Inventor： Efrem Fesshaie , Paulius Kabisius
Abstract: Provided are waveguide sensors and position sensing systems. In some embodiments, a position sensing system may include a waveguide configured to receive and transmit a pulse, and a magnet moveable relative to the waveguide. The waveguide may include a first core layer and a second core layer, a magnetic layer between the first and second core layers, and a conductive winding around the first core layer, the second core layer, and the magnetic layer. The position sensing system may further include a first substrate layer above the conductive winding and a second substrate layer below the conductive winding.
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Patent Agency Ranking
公开(公告)号：US20250014788A1
公开(公告)日：2025-01-09
申请号：US18890908
申请日：2024-09-20
Applicant: Littelfuse, Inc.
Inventor： Efrem Fesshaie , Paulius Kabisius , Jianhua Chen , Rimantas Misevicius
Abstract: A self-limiting heater and method for building the self-limiting heater are disclosed. The self-limiting heater consists of a resistor and a PTC resistor coupled together in series with a power supply. Both resistive devices have good thermal coupling. The resistor has a low temperature coefficient while the resistance of the PTC resistor increases with an increase in temperature. The ohmic resistance ratio between the resistor and the PTC may be used to adjust the heater characteristics and limit the characteristic sharpness.
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公开(公告)号：US20220124876A1
公开(公告)日：2022-04-21
申请号：US17071260
申请日：2020-10-15
Applicant: Littelfuse, Inc.
Inventor： Efrem Fesshaie , Paulius Kabisius
Abstract: A pPTC heating device having areas with different power densities distributed over the surface of the device. The device is constructed using a base layer composed of a pPTC material having a layer of sectioned conductive plates disposed over and under the layer of pPTC such as to control the path of the current through the device, thereby controlling resistance of the device and the power density of the device.
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公开(公告)号：US20180128942A1
公开(公告)日：2018-05-10
申请号：US15805230
申请日：2017-11-07
Applicant: Littelfuse, Inc.
Inventor： Efrem Fesshaie , Paulius Kabisius , Mindaugas Ketlerius
CPC classification number: G01W1/14 , B60S1/0837 , G01J1/0411 , G01J1/4228 , G01J3/108 , G01J2001/4266
Abstract: An integrated rain and solar radiation sensing module including at least two light emitting elements, a plurality of input lenses, wherein at least two of the plurality of input lenses are configured to receive and collimate light emitted by each of the light emitting elements, a plurality of output lenses numbering at least twice as many as the plurality of input lenses, wherein each output lens is configured to receive and focus light that is collimated by at least one of the plurality of input lenses and reflected off of a transparent substrate, and a plurality of light receiving elements, wherein each light receiving element configured to receive focused light from at least one of the output lenses and to convert the received light into an electrical output signal proportional to the received light.
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公开(公告)号：US11570852B2
公开(公告)日：2023-01-31
申请号：US17071260
申请日：2020-10-15
Applicant: Littelfuse, Inc.
Inventor： Efrem Fesshaie , Paulius Kabisius
Abstract: A pPTC heating device having areas with different power densities distributed over the surface of the device. The device is constructed using a base layer composed of a pPTC material having a layer of sectioned conductive plates disposed over and under the layer of pPTC such as to control the path of the current through the device, thereby controlling resistance of the device and the power density of the device.
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公开(公告)号：US20220299342A1
公开(公告)日：2022-09-22
申请号：US17208053
申请日：2021-03-22
Applicant: Littelfuse, Inc
Inventor： Efrem Fesshaie , Paulius Kabisius
Abstract: Provided are waveguide sensors and position sensing systems. In some embodiments, a position sensing system may include a waveguide configured to receive and transmit a pulse, and a magnet moveable relative to the waveguide. The waveguide may include a first core layer and a second core layer, a magnetic layer between the first and second core layers, and a conductive winding around the first core layer, the second core layer, and the magnetic layer. The position sensing system may further include a first substrate layer above the conductive winding and a second substrate layer below the conductive winding.
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