HYSTERESIS LOOP RECORDER Russian patent published in 2010 - IPC G01R33/14 

FIELD: measuring technology.

SUBSTANCE: invention refers to magnetic measurements and can be used for recording static hysteresis loops of ferromagnetic materials (tested products). A device comprises a magnetising winding with series reference resistor, an irregular high-frequency signal generator with two outputs, one of which is connected to the first input of a summing amplifier, and the other through a frequency divider is connected to the second input of the summing amplifier with its output connected to a magnetising winding, and a measuring winding connected through an integrator to a recording line of one coordinate of a two-dimensional phase-path detector (oscillograph). The device is supplied with a second algebraic summation amplifier with variable amplification coefficients for each input with its output connected to an input of a recording line of the other coordinate of the detector. A first input of the second amplifier is connected to the reference resistor, and a second input of this amplifier is connected to the measuring winding.

EFFECT: rapid displaying on the oscillograph and in the detector memory of the static hysteresis loop of a tested product.

3 dwg