A method of potential regulation of display panel, a potential regulation system and a storage apparatus are provided. The method comprising: obtaining a display bias value V.sub.th of the display panel; calculating an outputting voltage value V.sub.t=V.sub.i+V.sub.th which currently needs according a currently inputting voltage value V.sub.i and the display bias value V.sub.th; determining whether the currently inputting voltage value V.sub.i is in regulation range of the potential regulator; if yes, controlling the potential regulator to output correspondingly regulation voltage value according to the outputting voltage value V.sub.t; if no, regulating the regulation range of the potential regulator according to the outputting voltage value V.sub.t. Therefore, it could efficiency improve the problem of potential deviation in the display panel.

A voltage detection circuit includes a tunable delay circuit that receives a supply voltage and that generates a delayed signal in response to an input signal. A control circuit causes a first adjustment in a delay provided by the tunable delay circuit to the delayed signal. An error detection circuit generates an error indication in an error signal in response to a change in a timing of the delayed signal relative to a clock signal caused by the first adjustment in the delay provided to the delayed signal. The control circuit causes a second adjustment in the delay provided by the tunable delay circuit to the delayed signal in response to the error indication. The error detection circuit causes the error signal to be indicative of the supply voltage reaching a threshold voltage after the second adjustment in the delay.

A method and apparatus for performing current control for an integrated circuit are described. In one embodiment the apparatus comprises core logic coupled to receive a first current; a clock generator to generate a first clock signal; and a closed loop current controller coupled to the clock generator and coupled to provide a second clock signal to the core logic based on the first clock signal, the current controller to control an amount of the first current received by the core logic by changing the first clock signal to generate the second clock signal.

An elevator door arrangement is monitored wherein the elevator door arrangement includes at least one door wing and an electric actuator for displacing the door wing in at least one of an opening direction and a closing direction during a door motion event. A method for performing the monitoring includes a learning phase and an application phase. During the learning phase, different types of door motion events are identified and for each type of event a reference motion event duration is determined. During the application phase, a door arrangement operation is observed such as to detect door motion events and the different types of door motion events are distinguished upon comparison of the reference motion event durations with actual motion event durations measured during the application phase. Using the method, door motion events in an elevator may be recognized and monitored in an automatic manner.

One embodiment provides an electronic control unit (ECU) for a vehicle. The ECU includes transceiver circuitry, voltage measurement circuitry and feature set circuitry. The transceiver circuitry is to at least one of send and/or receive a message. The voltage measurement circuitry is to determine at least one of a high bus line voltage (VCANH) value and/or a low bus line voltage (VCANL) value, for each zero bit of at least one zero bit of a received message. The received the message includes a plurality of bits. The feature set circuitry is to determine a value of at least one feature of a feature set based, at least in part, on at least one of a high acknowledge (ACK) threshold voltage (VthH) and/or a low ACK threshold voltage (VthL). The feature set includes at least one of an operating most frequently measured VCANH value (VfreqH2) of a number of VCANH values and/or an operating most frequently measured VCANL value (VfreqL2) of a number of VCANL values.

A smart-home device may include a solid state relay (SSR) switching integrated circuit (IC). SSR switching IC may include switching elements configured to open and close a connection between a power wire and a return wire of an environmental system; a voltage sensor that measures a voltage across the one or more switching elements; a current sensor that measures a current through the one or more switching elements; and a temperature sensor that measures a temperature near the one or more switching elements. The smart-home device may also include a wireless communication device that periodically receives voltage, current, or temperature data originating from the SSR switching IC and transmits the voltage, current, or temperature data to a device management server. The device management server may receive batches of voltage, current, or temperature data from a plurality of smart-home devices.

A first resistor and a second resistor are coupled in series between a voltage source and an active load. When the current drawn by the active load exceeds a current threshold corresponding to a maximum admissible voltage drop across the first resistor, a stabilization current is delivered to the node common to the series coupled first and second resistors in such a way as to stabilize the voltage on the terminals of the active load at a threshold value. In the presence of such a current in excess of the current threshold, the current consumed by the active load is measured from the voltage drop across the second resistor. Conversely, if the current is less than the current threshold, the current consumed by the active load is measured from the voltage drop across the first resistor.

A system for automatically commissioning a solar panel array comprises a plurality of panel monitoring devices, each panel monitoring device connected between a positive and negative terminal of a solar panel. Each panel monitoring device comprises a switching device, the switching device configurable to disconnect an output from the solar panel. The system further comprises logic configured to automatically obtain a relative position of each panel monitoring device in the system by appointing serially a series of masters from among the panel monitoring devices, each master in turn broadcasting a unique identifier and enabling its output. Each panel monitoring device listens to the masters' broadcasts and stores in memory the unique identifier and information indicating whether the panel monitoring device detected the masters' voltage. The panel monitoring devices determine their respective locations by analyzing the information broadcast by, and the voltage detected from, the masters.

A method for operating a power generation system coupled to a power grid during a grid unbalance event, a method for determining an injection current to be supplied into a power grid by a power generation system, and a method for addressing an asymmetric grid fault in a power grid connected to a power generation system are provided. The methods may be carried out based on a reactive or an active power/current priority.

A motor system is disclosed comprising: an electrical conductor in the form of a coil or winding; an electrical insulator insulating the electrical conductor; a discharge sensor arranged and configured to measure a parameter indicative of an electrical current in the insulator; and a voltage controller for controlling a voltage signal applied to the electrical conductor based on a value of the parameter measured by the discharge sensor.