An apparatus and method for diagnosing whether a charging and discharging switching element provided on a charging and discharging path of a battery pack operates normally. A charging and discharging switching unit having a charging and discharging switch and a fuse is installed on a charging and discharging path between a battery cell and a pack terminal. The apparatus includes a first diagnosing path a second diagnosing path, a third diagnosing path, an integrated diagnosing path having a diagnosis switching unit and a diagnosis resistor, a voltage measuring unit, and a control unit configured to turn on and off the diagnosis switching unit and determine whether the charging and discharging switching unit is operating abnormally based on the diagnosis voltage measured by the voltage measuring unit.

Systems and methods for direct heater diagnostics for a hot melt liquid dispensing system are disclosed. At least one of a current measurement or a voltage measurement is received from a respective current and/or voltage sensor positioned at an electrical circuit that supplies electric power to a heater associated with the dispensing system. The heater can be for an applicator or heated hose attached to the dispensing system, a melter of the dispensing system, or a pump of the dispensing system. A state of the electrical circuit is determined based on the at least one of the current or voltage measurement.

The present disclosure relates to an energy monitoring system for a vehicle, a vehicle comprising such an energy monitoring system and a method for manufacturing such an energy monitoring system.

The energy monitoring system comprises an on-board battery charging system, a traction voltage system and a control unit. The traction voltage system is connected to the on-board battery charging system and the control unit is configured to transfer energy stored in the traction voltage system to the on-board battery charging system in case an energy level of the traction voltage system exceeds a defined threshold.

A blood measurement device having high bending rigidity and having excellent propulsion properties and rotational force transmission properties in a blood vessel. A blood measurement device has a tubular shaft having flexibility, a tubular connection portion positioned coaxially with the distal end of the shaft and having an inner diameter larger than the inner diameter of the shaft, a slit communicating the inside and the outside of the connection portion, a tubular tip guide portion having flexibility coaxially connected to the distal end of the connection portion, a core material having flexibility fitted into the connection portion and extending to the distal end in the internal space of the tip guide portion to be connected to the tip guide portion, a measurement element positioned in the internal space of the tip guide portion and measuring the physical quantity of blood, and a signal wire which is extended from the measurement element to be inserted into and passed through the internal space of the shaft through the slit.

A headset which includes an earpiece; a flexible headband coupled to the earpiece, the flexible headband including a flex sensing component, the headband profile sensing component determining when the headset is in a headset un-used orientation and a headset used orientation; and, a smart power control system, the smart power control system performing a smart power control operation based upon whether the headset is in the headset un-used orientation or the headset used orientation.

A voltage sensing circuit uses a voltage divider for providing a sense signal indicating the voltage across a circuit component. A current injector is used for injecting current to the sensing terminal. A sense signal is obtained with no current injection, to determine if a fault is present. The sensing terminal is coupled to the external circuit component via a voltage clamping component. A further sense signal is obtained in response to the injection of current. By comparing the sense signal in response to the injected current and a clamping voltage of the voltage clamping component, it can then be determined if the fault is caused by the circuit component or by the voltage divider.

An error detecting method of a charging switch unit including a first charging switch and a second charging switch connected to a charging line of a battery, including: first switching one of the first charging switch and the second charging switch according to a switch control command; determining whether voltages at opposite ends of the second charging switch are similar when the switch control command indicates open and the first charging switch is opened first; determining that the first charging switch is normal when the voltages at the opposite ends of the second charging switch are similar; determining whether the voltages at the opposite ends of the first charging switch are similar when the switch control command indicates closed and the first charging switch is closed first; and determining that the first charging switch is normal when the voltages at the opposite ends of the first charging switch are similar.

A transformer fault detection, where the transformer includes a primary winding coupled to a medium voltage power line and a secondary winding providing a stepped down voltage of the medium voltage. The detection system includes a switching device, where the switching device includes a first voltage measuring device for measuring the voltage on the primary winding, a controller for processing measured voltages and a transceiver for receiving and transmitting messages. The detection system also includes a second voltage measuring device for measuring the stepped down voltage on the secondary winding, where the second voltage measuring device includes a transmitter for transmitting the measured step down voltage to the switching device. The controller uses the measured voltages to calculate a transformer turns ratio (TTR) of the transformer to determine whether a transformer fault.

Circuits and methods involve an integrated circuit (IC) device, a plurality of application-specific sub-circuits, and a plurality of instances of a measuring circuit. The application-specific sub-circuits are disposed within respective areas of the IC device. Each instance of the measuring circuit is associated with one of the application-specific sub-circuits and is disposed within a respective one of the areas of the device. Each instance of the measuring circuit further includes a ring oscillator and a register for storage of a value indicative of an interval of time. Each instance of the measuring circuit is configured to measure passage of the interval of time based on a first clock signal, count oscillations of an output signal of the ring oscillator during the interval of time, and output a value indicating a number of oscillations counted during the interval of time.

Various embodiments provide a magnetic sensing scheme for a voltage regulator circuit. The voltage regulator circuit may include a first inductor (also referred to as an output inductor) coupled between a drive circuit and an output node. The voltage regulator circuit may further include a second inductor (also referred to as a sense inductor) having a first terminal coupled to the first inductor at a tap point between terminals of the first inductor. The second inductor may provide a sense voltage at a second terminal of the second inductor. A control circuit may control a state of the voltage regulator circuit based on the sense voltage to provide a regulated output voltage at the output node. Other embodiments may be described and claimed.