Disclosed is a power calculation method of a magnetic circuit. In view of the power problem of a magnetic circuit and the phase problem of a magnetomotive force (MMF) and a magnetic flux in the magnetic circuit, the present disclosure draws a magnetic circuit vector diagram based on an equivalent magnetic circuit vector model, and provides a method for calculating virtual magnetic active power, virtual magnetic reactive power, and virtual magnetic complex power of the magnetic circuit by analyzing the MMF, the magnetic flux, the reluctance, and the magnetic reactance in the magnetic circuit by using the magnetic circuit vector diagram. A mathematical relationship between the virtual magnetic power of the magnetic circuit and the electric power of the corresponding equivalent electric circuit is derived according to a conversion factor between the virtual magnetic power and the electric power, so that the electric power can be directly calculated according to magnetic parameters such as the MMF and the magnetic flux in the magnetic circuit. The power calculation method of the magnetic circuit provided in the present disclosure can calculate and analyze the virtual magnetic power of the magnetic circuit according to the magnetic circuit vectors, so as to calculate the electric power from the magnetic circuit through conversion. The electric power can be solved according to the magnetic circuit vectors directly when the electric vectors are not available to calculate electric power in electromagnetic components.

Magnetic core assemblies include a skewing feature that introduces transverse components into the power flux density vector are disclosed herein. A magnetic core assembly comprises a lower core having a center section and an upper core having a center section. The center sections are aligned to form a center post. A power winding that receives current is wrapped around the center post. The core assembly further comprises a power flux density vector that has transverse and non-transverse components. The transverse components have a higher magnetic reluctance than the non-transverse components. When the assembly is used with a transverse winding, the transverse components from the magnetic core assembly produce a transverse voltage waveform on the transverse winding. The transverse voltage waveform may be observed to detect a change in the sign of the slope of the transverse voltage waveform. The change in the sign of the slope indicates magnetic saturation.

A system, apparatus, and method for registering and interpreting the results of lateral flow assay determination by using electric, magnetic, and RF sensors incorporated within the test strip, attached to the inside of the enclosure for same and/or contained in a test fixture; instead of relying on optical inspection techniques. This method features high reliability, low cost, and ability for quantitative and dynamic measurements.

The inspection device includes: a conveyance route that conveys an inspection object at moving speed v; a first magnetic detector and a second magnetic detector that detect a magnetic field of a magnetic foreign object contained in the inspection object; an amplifying unit that amplifies detection signals of the first magnetic detector and the second magnetic detector; and a computation processing unit that performs processing of multiplying the detection signal of the second magnetic detector by a signal obtained by delaying the detection signal of the first magnetic detector. The first magnetic detector and the second magnetic detector each include one magnetic sensor and the magnetic sensors form a pair.

The inspection device includes: a conveyance route that conveys an inspection object at moving speed v; a first magnetic detector and a second magnetic detector that detect a magnetic field of a magnetic foreign object contained in the inspection object; an amplifying unit that amplifies detection signals of the first magnetic detector and the second magnetic detector; and a computation processing unit that performs processing of multiplying the detection signal of the second magnetic detector by a signal obtained by delaying the detection signal of the first magnetic detector. The first magnetic detector and the second magnetic detector each include one magnetic sensor and the magnetic sensors form a pair.

A system for detecting analytes in a test sample, and a method for processing the same, is provided. The system includes a cartridge reader unit that has a control unit and a pneumatic system, and a cartridge assembly that prepares the samples with mixing material(s) through communication channels. The assembly has a memory chip with parameters for preparing the sample and at least one sensor. The assembly, pneumatic system, and control unit operate together to prepare the sample and provide the prepared sample to the sensor for detecting analytes, and also process measurements from the sensor to generate test results.

The invention describes an integrated circuit, comprising a functional circuit structure which is configured to provide a functionality; and a test structure configured to set a signal, which is coupled to the functional circuit structure, to a test value in response to a magnetic field impulse, to control a test of the integrated circuit. The invention also describes an apparatus and a method for testing an integrated circuit and a computer program implementing the method. This invention provides a time-effective and cost-effective concept of component testing using magnetic interaction.

The present invention discloses a device for evaluating and demagnetizing residual magnetism quantity of a power transformer. A main circuit comprises a switching power supply the two ends of which are respectively connected with a filter capacitor and a resistor in parallel. A forward end of the switching power supply is connected with a main switch in series. A rear end of the main switch is connected with a series branch of a sixth switch and a first resistor, a series branch of a first switch and a second switch, and a series branch of a third switch and a fourth switch are connected in parallel. A driving circuit is respectively connected with driving ends of the main switch, the sixth, first, second, third and fourth switches. A control circuit is connected with the driving circuit for sending an instruction to the driving circuit.

The present invention discloses a device for evaluating and demagnetizing residual magnetism quantity of a power transformer. A main circuit comprises a switching power supply the two ends of which are respectively connected with a filter capacitor and a resistor in parallel. A forward end of the switching power supply is connected with a main switch in series. A rear end of the main switch is connected with a series branch of a sixth switch and a first resistor, a series branch of a first switch and a second switch, and a series branch of a third switch and a fourth switch are connected in parallel. A driving circuit is respectively connected with driving ends of the main switch, the sixth, first, second, third and fourth switches. A control circuit is connected with the driving circuit for sending an instruction to the driving circuit.

An electromagnetic property measuring device includes a magnetic conductive structure, a coil, and a scattering parameter measuring unit. The magnetic conductive structure includes a first side facing a sample to be tested and a second side opposite to the first side, and the first side has a magnetic gap. The coil surrounds the magnetic conductive structure to generate a magnetic field with the magnetic conductive structure. The scattering parameter measuring unit is disposed at the first side and located within a range of the magnetic field.