SU530293A1 - Device for studying the magnetic properties of ferromagnetic materials - Google Patents

Description

the stroke of which is through a voltage-to-frequency converter 12, a reversible counter 13 and a recording gate 14 are connected to the wiring register 10, and via a null-body 15 zshk to a reversible counter 13, while the output of the display register 10 is connected to a digital printing device 16 and a phase shifter 17, the input of which is connected to the output of the amplifier 2, and the output to the valves 9 and 14 of the recording. The device works as follows. Sinusoidal oscillations from generator 1 are amplified by amplifier 2 and fed to the magnetizing winding 3 of sample 4, EDC induced by signal winding 6 is fed to voltage to frequency converter 7, and pulses from voltage to frequency converter 7 arrive at the reversible counter 8, which produces sum-1 or subtraction of the incoming pulses depending on the polarity of the input voltage, which is determined by the null-organ 11.

Thus, the meter 8 continuously contains the instantaneous indication of the magnetorio field, which at the right moment, determined by the phase shifter 17, is read into the display register 10 by means of the write valve 9. The measurement results of both measurement channels are read at a time. This general result is digitally indicated and printed by a digitizer 16.

The intensity of the magnetic field is similar. An air transformer 5 is used to differentiate the magnetizing current (according to the magnetic field strength).

Information processing in digital form, as well as the use of voltage converters

in frequency, it can significantly improve the measurement accuracy.

Formula of invention

A device for studying the magnetic properties of ferromagnetic materials, containing a series-connected generator, amplifier and magnetizing winding, two null sign organs, two reversible counters, two recording gates, the outputs of which are connected to a series-connected display register and digital printing device, a signal winding and an air transformer , the primary windings of which are connected in series with the magnetizing winding, in which, in order to improve the measurement accuracy, it provides About two voltage to frequency converters, the input of the first of which is connected to the secondary winding of the air transformer, and the second to the signal winding, and their outputs, each through its reversible counter, are connected respectively to one recording valve, and a phase shifter whose input with the amplifier output, and the output with the control inputs of both gates, the input of the first null sign organ is connected to the secondary winding of the air transformer, the input of the second null sign organ is connected to

signal winding, and their outputs - each to its own reversible counter.

Sources of information taken into account during the examination:

1. Electrical measurements. L, Energie, 1973, p.285.

2. Auth. SEID., №353222, G01R 33 / 12,70. (prototype).