A semiconductor device for monitoring a reverse voltage is provided. The semiconductor device includes an intellectual property having an input node and an output node; a passive component connected between the output node and a potential; a monitoring circuit connected to the input node and the output node and powered by a driving power, the monitoring circuit monitoring a difference between an input level at the input node and an output level at the output node to detect a reverse voltage across the intellectual property. The driving power is provided by the output node.

A system for detecting electricity theft with an integrity checks analysis includes a graphical user interface (GUI) configured to display information related to a flow of electricity within a power distribution system and a controller in communication with the GUI. The controller is configured to receive electrical readings taken by a plurality of electricity meters and examine the electrical readings of the plurality of electricity meters for electricity theft indicators. The controller is also configured to determine a probability that electricity is being stolen at each of the plurality of electricity meters according to any electricity theft indicators affiliated therewith and output each probability to the GUI for display.

A system for detecting electricity theft with an integrity checks analysis includes a graphical user interface (GUI) configured to display information related to a flow of electricity within a power distribution system and a controller in communication with the GUI. The controller is configured to receive electrical readings taken by a plurality of electricity meters and examine the electrical readings of the plurality of electricity meters for electricity theft indicators. The controller is also configured to determine a probability that electricity is being stolen at each of the plurality of electricity meters according to any electricity theft indicators affiliated therewith and output each probability to the GUI for display.

Techniques are described for using valley detection for supply voltage modulation in power amplifier circuits. Embodiments operate in context of a power amplifier circuit configured to be driven by a supply voltage generated by a supply modulator and to receive an amplitude-modulated (AM) signal at its input. The output of the power amplifier circuit can be fed to a valley detector that can detect a valley level corresponding to the bottom of the envelope of the AM signal. The detected valley level can be fed back to the supply modulator and compared to a constant reference. In response to the comparison, the supply modulator can vary the supply voltage to the power amplifier circuit in a manner that effectively tracking the envelope of the power amplifier circuit's output signal, thereby effectively seeking a flat valley for the output signal's envelope.

Techniques are described for using valley detection for supply voltage modulation in power amplifier circuits. Embodiments operate in context of a power amplifier circuit configured to be driven by a supply voltage generated by a supply modulator and to receive an amplitude-modulated (AM) signal at its input. The output of the power amplifier circuit can be fed to a valley detector that can detect a valley level corresponding to the bottom of the envelope of the AM signal. The detected valley level can be fed back to the supply modulator and compared to a constant reference. In response to the comparison, the supply modulator can vary the supply voltage to the power amplifier circuit in a manner that effectively tracking the envelope of the power amplifier circuit's output signal, thereby effectively seeking a flat valley for the output signal's envelope.

A system for detecting theft of electricity from a utility includes a controller configured to receive electricity readings from an upstream metering device configured to sense electricity flowing therethrough and electricity readings from a first downstream metering device that is electrically downstream from the upstream metering device and configured to sense electricity flowing to a first load. The controller is further configured to compare the electricity readings from the first downstream metering device to the electricity readings from the upstream metering device. The controller is additionally configured to calculate a level of interference with an electrical path through the upstream metering device based on an extent that the electricity readings from the first downstream metering device deviate from the electricity readings from the upstream metering device and to output to the utility the level of interference with the electrical path.

A system for detecting theft of electricity from a utility includes a controller configured to receive electricity readings from an upstream metering device configured to sense electricity flowing therethrough and electricity readings from a first downstream metering device that is electrically downstream from the upstream metering device and configured to sense electricity flowing to a first load. The controller is further configured to compare the electricity readings from the first downstream metering device to the electricity readings from the upstream metering device. The controller is additionally configured to calculate a level of interference with an electrical path through the upstream metering device based on an extent that the electricity readings from the first downstream metering device deviate from the electricity readings from the upstream metering device and to output to the utility the level of interference with the electrical path.

An image generating device is an apparatus for acquiring an image which shows a direction of an electric current flowing through a semiconductor device. The image generating device comprises a signal application unit configured to apply a stimulation signal to the semiconductor device, a magnetic detection unit configured to output a detection signal based on a magnetism generated by an application of the stimulation signal, and an image generation unit configured to generate phase image data comprising a phase component which indicates a phase difference based on the phase difference between the detection signal and a reference signal which is generated based on the stimulation signal and generate an electric current direction image which shows the direction of the electric current based on the phase image data.

An image generating device is an apparatus for acquiring an image which shows a direction of an electric current flowing through a semiconductor device. The image generating device comprises a signal application unit configured to apply a stimulation signal to the semiconductor device, a magnetic detection unit configured to output a detection signal based on a magnetism generated by an application of the stimulation signal, and an image generation unit configured to generate phase image data comprising a phase component which indicates a phase difference based on the phase difference between the detection signal and a reference signal which is generated based on the stimulation signal and generate an electric current direction image which shows the direction of the electric current based on the phase image data.

A multifunction multitask apparatus for use in building inspections is disclosed. The apparatus comprises a portable case comprising a grippable handle, a mini-desk, lighting elements and a plurality of sensors for building structure inspection. The apparatus includes a power source in electric communication with a sensor. The apparatus may include a variety of sensors including a voltage tester, a circuit polarity sensor, and ambient air testing sensor, and ambient temperature sensor, and ambient humidity sensor, a moisture meter, a radon sensor, a carbon monoxide sensor, and an airborne toxin sensor. Other embodiments of the invention may include safety features including a first-aid cat, a chemical spray deterrent device, and a tactical prong. Other embodiments may include lights including a laser pointer, an LED light, an a focused light beam.