Printed Circuits with Embedded Resistive Thermal Devices

    公开(公告)号:US20220326746A1

    公开(公告)日:2022-10-13

    申请号:US17224891

    申请日:2021-04-07

    Applicant: Apple Inc.

    Inventor: Anne M. Mason

    Abstract: An electronic device may include a printed circuit with a surface-mounted component. The component may produce resistive heating within the printed circuit. Resistive thermal devices (RTDs) may be embedded within the printed circuit. An RTD may at least partially overlap the electrical component. The RTD may include contact pads on a flexible substrate and a meandering conductive trace between the contact pads. The trace may have a resistance varying linearly as a function of temperature. A data acquisition system (DAQ) may measure the resistance of the RTD. Control circuitry may identify the temperature of the printed circuit based on the resistance of the RTD measured by the DAQ and may reduce power consumption by the component when the temperature exceeds a threshold. This may serve to prevent overheating in the printed circuit over time, thereby maximizing the operating life of the printed circuit.

    Printed circuits with embedded resistive thermal devices

    公开(公告)号:US12135592B2

    公开(公告)日:2024-11-05

    申请号:US18473567

    申请日:2023-09-25

    Applicant: Apple Inc.

    Inventor: Anne M. Mason

    Abstract: An electronic device may include a printed circuit with a surface-mounted component. The component may produce resistive heating within the printed circuit. Resistive thermal devices (RTDs) may be embedded within the printed circuit. An RTD may at least partially overlap the electrical component. The RTD may include contact pads on a flexible substrate and a meandering conductive trace between the contact pads. The trace may have a resistance varying linearly as a function of temperature. A data acquisition system (DAQ) may measure the resistance of the RTD. Control circuitry may identify the temperature of the printed circuit based on the resistance of the RTD measured by the DAQ and may reduce power consumption by the component when the temperature exceeds a threshold. This may serve to prevent overheating in the printed circuit over time, thereby maximizing the operating life of the printed circuit.

    Printed Circuits with Embedded Resistive Thermal Devices

    公开(公告)号:US20240012458A1

    公开(公告)日:2024-01-11

    申请号:US18473567

    申请日:2023-09-25

    Applicant: Apple Inc.

    Inventor: Anne M. Mason

    Abstract: An electronic device may include a printed circuit with a surface-mounted component. The component may produce resistive heating within the printed circuit. Resistive thermal devices (RTDs) may be embedded within the printed circuit. An RTD may at least partially overlap the electrical component. The RTD may include contact pads on a flexible substrate and a meandering conductive trace between the contact pads. The trace may have a resistance varying linearly as a function of temperature. A data acquisition system (DAQ) may measure the resistance of the RTD. Control circuitry may identify the temperature of the printed circuit based on the resistance of the RTD measured by the DAQ and may reduce power consumption by the component when the temperature exceeds a threshold. This may serve to prevent overheating in the printed circuit over time, thereby maximizing the operating life of the printed circuit.

    Printed Circuits With Embedded Strain Gauges
    8.
    发明申请
    Printed Circuits With Embedded Strain Gauges 有权
    带嵌入式应变片的印刷电路

    公开(公告)号:US20170030784A1

    公开(公告)日:2017-02-02

    申请号:US14812958

    申请日:2015-07-29

    Applicant: Apple Inc.

    Abstract: A printed circuit board may have embedded strain gauges. A strain gauge may be formed from a metal trace on a polymer substrate. The metal trace may form a variable strain gauge resistor that is incorporated into a bridge circuit for a strain gauge. The printed circuit may have a rigid printed circuit layer with a recess that receives the polymer substrate. Metal pads on the polymer substrate may be coupled to respective ends of the variable strain gauge resistor. The rigid printed circuit substrate with the recess may be laminated between additional rigid printed circuit layers. Vias may be formed through the additional rigid printed circuit layers to contact the metal pads. Embedded strain gauges may be used in gathering strain data when strain is imparted to a printed circuit during use of the printed circuit in an electronic device or during testing.

    Abstract translation: 印刷电路板可以具有嵌入式应变计。 应变计可由聚合物基底上的金属迹线形成。 金属痕迹可以形成可变应变计电阻器,其被并入用于应变仪的桥式电路中。 印刷电路可以具有刚性印刷电路层,其具有容纳聚合物基底的凹部。 聚合物基板上的金属焊盘可以连接到可变应变计电阻器的相应末端。 具有凹槽的刚性印刷电路基板可以层压在附加的刚性印刷电路层之间。 可以通过附加的刚性印刷电路层形成通孔以接触金属焊盘。 当在电子设备中使用印刷电路或在测试期间使用印刷电路时,嵌入式应变计可用于收集应变数据。

    Printed Circuits with Embedded Resistive Thermal Devices

    公开(公告)号:US20250036176A1

    公开(公告)日:2025-01-30

    申请号:US18903894

    申请日:2024-10-01

    Applicant: Apple Inc.

    Inventor: Anne M. Mason

    Abstract: An electronic device may include a printed circuit with a surface-mounted component. The component may produce resistive heating within the printed circuit. Resistive thermal devices (RTDs) may be embedded within the printed circuit. An RTD may at least partially overlap the electrical component. The RTD may include contact pads on a flexible substrate and a meandering conductive trace between the contact pads. The trace may have a resistance varying linearly as a function of temperature. A data acquisition system (DAQ) may measure the resistance of the RTD. Control circuitry may identify the temperature of the printed circuit based on the resistance of the RTD measured by the DAQ and may reduce power consumption by the component when the temperature exceeds a threshold. This may serve to prevent overheating in the printed circuit over time, thereby maximizing the operating life of the printed circuit.

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