A voltage monitoring circuit includes an initializing circuit that outputs an initialization signal generated by delaying a power supply voltage as much as a first delay time, a switching circuit that outputs a switching signal in response to a reset signal, a voltage detecting circuit that outputs a detection signal based on the power supply voltage and stops an operation in response to the switching signal, and an output circuit that outputs the reset signal based on the initialization signal and the detection signal.

The inventive glove provides a work glove that detects the presence of AC voltage without compromising its usability as a work glove. Embodiments of the inventive glove include monopole aerials extending into the fingers of the glove. A thin flexible dielectric layer sits between the aerials and inside of the glove, acting as an electrical barrier between the aerials and the user's hand. The aerials are connected to conventional voltage detector circuitry on a circuit board located on the back of the glove. The circuit board is grounded to the user's wrist, which enhances the circuitry's ability to detect the presence of nearby AC voltage at a safe distance.

A voltage detection circuit, a power supply system and a chip are provided. The voltage detection circuit includes: a first step-down sub-circuit, a second step-down sub-circuit and a first voltage-stabilizing sub-circuit; wherein the first step-down sub-circuit has one end connected to one end of the second step-down sub-circuit in series; the first step-down sub-circuit has another end connected to a first port of the voltage detection circuit; and the second step-down sub-circuit has another end connected to a second port of the voltage detection circuit; and wherein the first voltage-stabilizing sub-circuit has one end connected to a third port of the voltage detection circuit and has another end connected to the second port, where the first voltage-stabilizing sub-circuit is turned on when the third port has a voltage higher than the second port and stabilized when the third port has a voltage lower than the second port.

Techniques for determining a state of health of an energy storage device that utilize a capacitor gain amplifier to provide an AC gain and block the DC voltage. An input capacitor can couple between an input excitation signal generator circuit and the amplifier's inverting input terminal, and a feedback capacitor can couple between the amplifier's inverting input terminal and the amplifier's output. A switch can be used to reset the feedback capacitor periodically to prevent the amplifier's output from becoming saturated from a leakage current at the inverting input terminal of the amplifier.

According to one aspect, an integrated circuit includes: an electronic module configured to generate a voltage at an output, and an electronic control circuit coupled to an output of the electronic module, the electronic control circuit comprising an emissive electronic component. The electronic control circuit is configured to cause the emissive electronic component to emit light radiation as a function of a value of the voltage at the output of the electronic module relative to a value of an operating voltage of the electronic module, and the operating voltage is specific thereto during normal operation of this electronic module. The light radiation emitted by the emissive electronic component is configured to diffuse to an outer face of the integrated circuit.

Voltage sensor (1) comprising a voltage divider (40) for sensing an AC voltage of a HV/MV power conductor (10). For adjusting the common overall impedance of the low-voltage portion of the voltage divider towards a desired impedance, the low-voltage portion (60) comprises one or more low-voltage impedance elements (110), a plurality of adjustment impedance elements (80) and a plurality of switches. In its connect state, each switch electrically connects an adjustment impedance element in parallel to at least one of the one or more low-voltage impedance elements (110). The overall impedance of the high-voltage portion (50) and the overall impedance of the low-voltage portion (60) of the voltage divider (40) are adapted such that, by bringing one or more of the switches (90) into their connect state, the voltage divider (40) has, for an AC voltage of between 5 and 25 kV phase-to-ground and a frequency of between 40 and 70 Hertz, a dividing ratio of 3077, of 6154, of 6769 or of 10 000.

Feed forward compensation of parasitic capacitance in a device frontend is provided. A feed forward element is positioned along at least a portion of a length of a first input resistance and a distance away from the first input resistance. In some implementations, the feed forward element has a width that is increasing along the at least a portion of the length of the first input resistance. The feed forward element is operative to introduce an element capacitance that offsets a parasitic capacitance in a volume surrounding the first input resistance.

A measurement individual difference correction system for measuring voltage to ground includes a cable comprising a conductor, a floor panel provided on a floor and comprising a conductor, an oscillation circuit connected between the cable and the floor panel, and configured to output a signal, a voltage-to-ground measurement device comprising an upper electrode and a lower electrode positioned apart from each other, and configured to measure voltage between the upper electrode and the lower electrode, and a computation device in communication with the voltage-to-ground measurement device, in which the computation device calculates combined impedance of electrostatic capacity between the user and the cable, impedance of the user, and electrostatic capacity between the user and the upper electrode, by using voltage of the signal output from the oscillation circuit and the voltage between the upper electrode and the lower electrode measured by the voltage-to-ground measurement device.

ASSEMBLY AND CONTROL SYSTEM FOR ACCUMULATORS IN WORKSTATIONS, presenting a system intended for battery control in radio-base stations rack comprising a processing center which controls a switching system, batteries, electromagnetic locks and sensors, in order to prevent non-authorized actions of such batteries inside the racks from occurring.

Accessories are removably received by a non-contact electrical detector for measuring an electrical characteristic without galvanic contact between the accessory and a non-contact sensor in the non-contact electrical detector. In some embodiments, an accessory is positioned in a gap between first and second extensions of the non-contact electrical detector. In some embodiments, an accessory includes first and second recesses on opposite sides of the accessory. First and second clamp arms of a non-contact electrical detector are inserted within the first and second recesses to removably hold the accessory. An external conductive prong of the accessory is electrically coupled, or is selectively electrically coupleable, with an internal conductive prong of the accessory. The external conductive prong is configured to be inserted into a receptacle of an electrical outlet. In use, the accessory positions the internal conductive prong within a sensing area of the non-contact electrical sensor of the non-contact electrical detector.