Systems and methods for determining the condition of a gas sensor

    公开(公告)号:US10782263B2

    公开(公告)日:2020-09-22

    申请号:US15586849

    申请日:2017-05-04

    摘要: An impedance in an electrochemical gas sensor can be measured by connecting at least one pin in an integrated circuit to at least one electrode in an electrochemical gas sensor, using a damping capacitor to connect the at least one pin in the integrated circuit to an electrical ground, applying a voltage to the electrochemical gas sensor to provide a bias voltage to at least one electrode in the electrochemical gas sensor, receiving a current from at least one electrode in the electrochemical gas sensor, determining a measured gas amount from the received current, activating a switch located within the integrated circuit to isolate the damping capacitor from the at least one pin in the integrated circuit, and measuring an impedance of the electrochemical gas sensor using an excitation signal while the at least one damping capacitor is isolated from the at least one electrode in the electrochemical gas sensor.

    Thermoelectric devices
    13.
    发明授权

    公开(公告)号:US10672968B2

    公开(公告)日:2020-06-02

    申请号:US14805135

    申请日:2015-07-21

    IPC分类号: H01L35/32 H01L35/18

    摘要: An embodiment of a thermoelectric device may include a plurality of thermoelectric cells disposed between first and second planes. Each of the thermoelectric cells may include a thermoelectric element formed from a thermoelectric material of a single semiconductor type, the thermoelectric element including a first end, a second end, and a portion extending from the first end to the second end, the portion extending from the first end to the second end including at least two surfaces that face each other; and at least one conductive element electrically connected to and extending away from the second end of the thermoelectric element toward the first end of the thermoelectric element of another thermoelectric cell. Each thermoelectric cell also may further include an insulating element disposed between the at least two surfaces of the thermoelectric element and between portions of the at least one conductive element.

    High speed serial link for video interfaces

    公开(公告)号:US10594892B2

    公开(公告)日:2020-03-17

    申请号:US15685379

    申请日:2017-08-24

    摘要: This disclosure relates generally to communicating video content and other data over networks. An example apparatus includes a transmitter for communicating data via a serial link with a receiver. The transmitter includes an input, an output interface to the serial link, and translation circuitry. The input includes multiple input data lanes and a clock lane, and the input is configured to concurrently receive data on the multiple input data lanes aligned with a clock signal received on the clock lane according to a multi-lane communication protocol. The output interface is a clock-less interface and includes a number of output data lanes less than a number of the multiple input data lanes. The translation circuitry translates the data received according to the multi-lane communication protocol to a serial link communication protocol for transmission on the serial link.

    MULTI-MODE FEEDBACK CONTROL THROUGH DIGITAL ISOLATOR

    公开(公告)号:US20200083874A1

    公开(公告)日:2020-03-12

    申请号:US16125620

    申请日:2018-09-07

    IPC分类号: H03K7/08 H02M1/084

    摘要: Power isolators with multiple selectable feedback modes are described. The power isolators may transfer a power signal from a primary side to a second side. A feedback signal may be provided from the secondary side to the primary side to control generation of the power signal on the primary side. In this manner, the power signal provided to the secondary side may be maintained within desired levels. The feedback signal may be generated by feedback circuitry configurable to operate in different modes, such that the feedback signal may be of differing types depending on which feedback mode is implemented.

    Fault tolerant low leakage switch
    18.
    发明授权

    公开(公告)号:US10581423B1

    公开(公告)日:2020-03-03

    申请号:US16238338

    申请日:2019-01-02

    摘要: Fault tolerant switches are provided herein. In certain embodiments, a fault tolerant switch includes a switch, a gate driver, and a clamp. The switch includes a switch p-type field effect transistor (PFET) and a switch n-type field effect transistor (NFET) electrically connected in series and controlled by the gate driver. Additionally, the clamp is electrically connected in parallel with the switch, and includes a forward protection circuit including a first diode and a first clamp FET in series, and a reverse protection circuit including a second diode and a second clamp FET in series. The clamp further includes a first gate bias circuit configured to bias a gate of the first clamp FET and a second gate bias circuit configured to bias a gate of the second clamp FET.

    Systems, circuits and methods for determining a position of a movable object

    公开(公告)号:US10551215B2

    公开(公告)日:2020-02-04

    申请号:US14737403

    申请日:2015-06-11

    IPC分类号: G01D5/20

    摘要: An embodiment of a position sensing system includes a signal generation circuit to generate an excitation signal according to a selected characteristic signal, a drive circuit to drive an excitation source with the excitation signal, an input circuit to receive a sensor output while driving the excitation source, a signal detection circuit to identify a component of the sensor output corresponding to the characteristic signal, and a control circuit to determine the position of the movable object as a function of the identified component of the sensor output. The positioning system may be included an electronic camera, where the movable object may be a lens. The excitation source may be a conductive coil, the excitation a magnetic field, and the sensor a magneto resistive sensor. Alternatively, the excitation source may be an optical excitation source, the excitation an optical excitation, and the sensor an optical sensor.