Abstract: A diode voltage measurement system includes a plurality of diodes connected in series along a single line. The plurality of diodes include N diodes. The system includes a plurality of capacitors for at least N?1 of the diodes. Each capacitor is connected in parallel to the single line with a respective diode to form a respective diode-capacitor (DC) pair. Each DC pair is configured such that each DC pair reaches a steady state voltage at a different time. The system includes a current supply connected to the single line to supply a current to the line. The system includes a control module configured to sense a total voltage across the single line and to successively determine voltage of each diode from the total voltage based on the current, a known total steady state voltage, and known time-to-steady-state-voltages of each DC pair and/or diode.

Abstract: A method of measuring target proximity comprising the steps of transmitting a magnetic field signal by a controller of a proximity sensor at a target, measuring impedance of an inductor of a proximity sensor, calculating a relative position of the target in relation to a sensor face, and providing a near/far output status of the target at a predetermined rate.

Abstract: Systems and methods for position determination in an electric machine are provided. Aspects include a DC power source connected to an inverter circuit, an electric motor comprising a rotor and a stator, wherein an output of the inverter circuit is connected to a plurality phase of windings, and a controller configured to operate the electric motor and the inverter circuit, wherein the controller is further configured to determine one or more inactive phase windings from the plurality of phase windings, supply a voltage to the inactive phase windings, receive, from a current sensor connected to the electric motor, a current for each inactive phase winding of the inactive phase windings, determine an inductance for each inactive phase winding of the inactive phase winding based on the current, and determine a position of the rotor in the electric motor based on the inductance for each inactive phase winding.

Abstract: A diode voltage measurement system can include a plurality of diodes connected in series along a single line. The plurality of diodes can include N diodes. The system can include a plurality of capacitors for at least N?1 of the diodes. Each capacitor can be connected in parallel to the single line with a respective diode to form a respective diode-capacitor (DC) pair. Each DC pair can be configured such that each DC pair reaches a steady state voltage at a different time. The system can include a current supply connected to the single line to supply a current to the line. The system can include a control module configured to sense a total voltage across the single line and to successively determine voltage of each diode from the total voltage based on the current, a known total steady state voltage, and known time-to-steady-state-voltages of each DC pair and/or diode.

Abstract: A resistance measurement system can include a plurality of resistors connected in series along a single line. The plurality of resistors can include N resistors. The system can include a plurality of capacitors for at least N?1 of the resistors. Each capacitor can be connected in parallel to the single line with a respective resistor to form a respective resistor-capacitor (RC) pair. Each RC pair can include a different time constant such that each RC pair reaches a steady state voltage at a different time. The system can include a current supply connected to the single line to supply a current to the line. The system can include a control module configured to sense a total voltage across the single line and to successively determine resistance of each resistor from the total voltage based on the current, a known total steady state voltage, and known time-to-steady-state-voltages of each RC pair and/or resistors.

Abstract: Systems and methods for position determination in an electric machine are provided. Aspects include a DC power source connected to an inverter circuit, an electric motor comprising a rotor and a stator, wherein an output of the inverter circuit is connected to a plurality phase of windings, and a controller configured to operate the electric motor and the inverter circuit, wherein the controller is further configured to determine one or more inactive phase windings from the plurality of phase windings, supply a voltage to the inactive phase windings, receive, from a current sensor connected to the electric motor, a current for each inactive phase winding of the inactive phase windings, determine an inductance for each inactive phase winding of the inactive phase winding based on the current, and determine a position of the rotor in the electric motor based on the inductance for each inactive phase winding.

Abstract: A laser diode drive system configured to output a drive signal to control a voltage provided to a laser diode can include a circuit sensor system configured to output a sensed signal indicative of a drive current of a laser diode, and a temperature sensor configured to output a temperature signal indicative of a temperature of the laser diode or an ambient temperature of the laser diode. The system can include a temperature compensation system configured to output a correction signal based on the temperature signal to compensate for a temperature dependent factor in the sensed signal.

Abstract: A switching device includes an insulated gate bipolar transistor (IGBT) or MOSFET having a gate, an emitter, and a collector configured to allow current to pass between the emitter and the collector based on voltage applied to the gate. A stack of alternating layers of photo-sensitive p-n junction layers and insulating layers stacked on the gate for optical switching control of voltage through the IGBT or MOSFET.

Abstract: A method of measuring target proximity comprising the steps of transmitting a magnetic field signal by a controller of a proximity sensor at a target, measuring impedance of an inductor of a proximity sensor, calculating a relative position of the target in relation to a sensor face, and providing a near/far output status of the target at a predetermined rate.

Abstract: An electronic braking arrangement includes a brake stack assembly, a driver circuit, a current limiter circuit, and a voltage limiter circuit. The driver circuit is operably connected to the brake stack assembly. The current limiter circuit and the voltage limiter circuit are connected in series between the driver circuit and the brake stack assembly to drive friction brake loads in the brake stack assembly with a voltage limited constant drive current.

Abstract: An electronic braking arrangement includes a brake stack assembly, a driver circuit, a current limiter circuit, and a voltage limiter circuit. The driver circuit is operably connected to the brake stack assembly. The current limiter circuit and the voltage limiter circuit are connected in series between the driver circuit and the brake stack assembly to drive friction brake loads in the brake stack assembly with a voltage limited constant drive current.

Abstract: An electronic braking arrangement includes a brake stack assembly, a driver circuit, a current limiter circuit, and a voltage limiter circuit. The driver circuit is operably connected to the brake stack assembly. The current limiter circuit and the voltage limiter circuit are connected in series between the driver circuit and the brake stack assembly to drive friction brake loads in the brake stack assembly with a voltage limited constant drive current.

Abstract: An electronic braking arrangement includes a brake stack assembly, a driver circuit, a current limiter circuit, and a voltage limiter circuit. The driver circuit is operably connected to the brake stack assembly. The current limiter circuit and the voltage limiter circuit are connected in series between the driver circuit and the brake stack assembly to drive friction brake loads in the brake stack assembly with a voltage limited constant drive current.

Abstract: A controller for a brake may comprise a tangible, non-transitory memory configured to communicate with the controller, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the controller, cause the controller to perform operations comprising receiving, by the controller, a three-phase signal indicating a first duty cycle for a first phase signal, a second duty cycle for a second phase signal, and a third duty cycle for a third phase signal, determining, by the controller, a minimum value based upon the first phase signal, the second phase signal, and the third phase signal, and converting, by the controller, the minimum value to a zero value.

Abstract: An interface circuit for a bridge sensor has a switch that connects to a resistive bridge circuit. The resistive bridge circuit includes a first input terminal, a second input terminal, and a pair of resistive branches that connect between the first and second input terminals. Both of the resistive branches include an output terminal. The switch is connected to the first input terminal and is in series with both resistive branches for connecting and disconnecting a voltage source from the resistive branch output terminals.

Abstract: A circuit card is disclosed. The circuit card may have a strain relief aperture and a conductor contact. A conductor may extend through the strain relief aperture and connect in electrical continuity with the conductor contact. The circuit card may have a conformal coating, such as poly(p-xylylene) polymer applied. The conformal coating may be applied in layers, and the layers may have different thicknesses.

Abstract: A circuit card is disclosed. The circuit card may have a strain relief aperture and a conductor contact. A conductor may extend through the strain relief aperture and connect in electrical continuity with the conductor contact. The circuit card may have a conformal coating, such as poly(p-xylylene) polymer applied. The conformal coating may be applied in layers, and the layers may have different thicknesses.

Abstract: An interface circuit for a bridge sensor has a switch that connects to a resistive bridge circuit. The resistive bridge circuit includes a first input terminal, a second input terminal, and a pair of resistive branches that connect between the first and second input terminals. Both of the resistive branches include an output terminal. The switch is connected to the first input terminal and is in series with both resistive branches for connecting and disconnecting a voltage source from the resistive branch output terminals.

Abstract: Method for processing echoes received in an ultrasonic liquid gauging apparatus includes the steps of transmitting at time t.sub.1 ultrasonic energy from an ultrasonic transducer toward a fixed target and a liquid surface; producing a transmission pulse corresponding to the time t.sub.1 ; receiving during a predetermined cycle interval a number (i) of ultrasonic echoes after t.sub.1 and converting each echo into a corresponding echo pulse having an associated time of arrival t.sub.i+1 ; and calculating the liquid level based on an averaged time of arrival of the second echo relative to t.sub.1 when it is known that the liquid surface is low.

Abstract: A smart structure comprising a rotatable shaft, and a sensor integrated with the shaft, a resonant detector circuit integrated with the structure for detecting a sensor output, and an external exciter circuit; the detector circuit having first coil means and the exciter circuit having second coil means magnetically coupled to the first coil means when aligned across a gap; and control means exterior the shaft for producing an output that corresponds to the sensor output compensated for the gap.