A power source control device that includes: a make-and-break relay configured to either make or break conduction between a first terminal of a load and a first electrode of a direct current power source; a dark current generation circuit configured to generate a dark current by lowering a voltage of the direct current power source, in a state in which a first terminal is connected to the first electrode of the direct current power source and a second terminal is connected to the first terminal of the load so as to be parallel to the make-and-break relay; and a bypass circuit configured to dissipate some of power supplied from an external charger by making conduction between a second electrode of the direct current power source and the first terminal of the load in response to the direct current power source being charged by the external charger.

A method for detecting high-frequency AC currents in a DC circuit including a common mode choke with two partial windings includes tapping voltages dropping across the two partial windings due to the AC current, superposing the tapped voltages, and obtaining a superposed AC voltage wherein differential mode portions of the tapped voltages are summed constructively and common mode portions of the voltages are summed destructively; and measuring the superposed AC voltage.

This invention discloses a power electronic converter that has a common reference point for the measurement of voltages and currents, making it possible to use non-isolated or isolated voltage and current sensors. The disclosed converter has an N-type power electronic conversion leg that consists of two sets of power electronic devices with their both ends connected to a capacitor to form a DC bus and their mid-point connected to the common reference point through an inductor and a current sensor. The disclosed converter has one or more power electronic conversion leg that consists of two sets of power electronic devices with the positive end connected to the positive rail of the DC bus and the negative end connected either to the common reference point N, in which case the power electronic conversion leg is denoted the A-type, or to the negative rail of the DC bus, in which case the power electronic conversion leg is denoted the B-type. For each present A-type or B-type power electronic conversion leg, its mid-point is connected to one terminal of the corresponding input/output port, together with a current sensor connected between the common reference point and the other terminal of the corresponding input/output port. The disclosed converter also has a capacitor connected to the positive rail of the DC bus and the common reference point through a current sensor. A storage system and/or a load can be connected in parallel with or in place of this capacitor. The disclosed converter can be used for DC/DC, AC/DC, DC/AC, and AC/AC conversion.

In a method for detecting people on a floor, at least three electrodes are integrated into the floor of the room that is to be monitored. Respective measurement axes are taken into account and associated with multiple pairs of electrodes integrated into the floor. The detection method includes the following steps: for each pair of electrodes, measuring a capacitance between the two electrodes of the pair; positioning a measurement point in a coordinate system defined by N of the measurement axes at coordinates provided by the capacitances measured for the pairs of electrodes respectively associated with the N measurement axes, where N is a number greater than 1; and detecting whether a person is lying on the floor according to a detection criterion that is function of the position of the measurement point in the coordinate system.

A method for operating at least one electromechanical actuator of a motor vehicle, wherein the actuator is designed to convert mechanical power into electrical power during operation of the motor vehicle in stochastic feed-in processes as a function of a feed-in efficiency predetermined by a feed-in operating point of the actuator, which electrical power is fed into an energy storage device of the motor vehicle, includes detecting the start of a feed-in process by a means of detection and, at the start of the feed-in process, setting a feed-in operating point of the actuator, wherein the feed-in efficiency is 50% or less.

The present disclosure relates to current sensing, and more particularly, to systems and methods for estimating the output current of a charge pump. In one embodiment, a method for estimating an output current of a charge pump is disclosed. The method comprises measuring, using a first sensing circuit, an input current into a switched capacitor power conversion circuit, and calculating, using a hardware processor, an estimated output current from the switched capacitor power conversion circuit as:

I.sub.OUT=(I.sub.IN?N)?Offset

wherein I.sub.OUT is the estimated output current, I.sub.IN is the measured input current, N is a multiplication or division factor of the switched capacitor power conversion circuit, and Offset is an output current offset.

A LAN cable conductor validation system includes controllable relays in-line with a portion of the twisted pair wires of the Ethernet cables. By temporarily open circuiting some of the Ethernet cable twisted pairs a drop in transmission speed can be detected for an active network component. This allows the active component's MAC address to be verified at a given physical location within the cable conductor network system.

A method for checking the plausibility of a current measurement between an electrical energy storage system and an electrical consumer is described, wherein a capacitor and a switching element are arranged between these two elements, the method comprising the steps of: a) ascertaining a first current value by measuring an electrical current between the electrical energy storage system and the electrical consumer; b) actuating the switching element to isolate the electrical energy storage system from the electrical consumer so that the electrical consumer is supplied with electrical energy by the capacitor; c) ascertaining a first electrical voltage at the capacitor; d) ascertaining a second current value depending on the ascertained voltage; e) checking the plausibility of the current measurement by comparing the first current value with the second current value.

A corresponding computer program, a machine-readable storage medium, an electronic control unit, and a corresponding device are also described.

A domestic appliance heating apparatus includes a heating element having two heating connections connected to two supply connections of a supply network, respectively. A first switching element is connected between one of the two heating connections and one of the two supply connections and a second switching element is connected between the other one of the two heating connections and the other one of the two supply connections. A measuring unit has at least one measuring input, at which a potential is present in at least one heating operating state. A control unit interrupts in a network form recognition operating state a conduction path through the heating element by means of the first switching element while the second switching element is closed and takes into account a first potential present at the measuring input when determining a network form present at the heating element.

A device for measuring a voltage differential communicated through a portion of a pipe or pipeline includes electrical contact assemblies which feature brush wheel assemblies. The brush wheel assemblies incorporate at least one brush wheel and at least one active guide disc which helps to absorb vibration, maintain even preload at the contact face of the rotating brush and ensure improved electrical contact between the brush wheel and the pipe.