SU911390A2

SU911390A2 - Nanowebermeter

Info

Publication number: SU911390A2
Application number: SU792715858A
Authority: SU
Inventors: Гали Арсланович Забиров
Original assignee: Казанский Ордена Трудового Красного Знамени Авиационный Институт Им.А.Н.Туполева
Priority date: 1979-01-16
Filing date: 1979-01-16
Publication date: 1982-03-07

Description

iS) НАНОВЕБЕРМЕТРiS) NANOVEBERMETER

, .; . ;. .

Изобретение ОТНОСИТСЯ к технике магнитных измерений, в частности измерений потока намагниченности насы-. щени Тонких и сверхтонких образцовThe invention relates to a technique of magnetic measurements, in particular, measurements of the magnetization flux sat-. Super Thin and Ultra Thin Samples

По основному авт. св. известен нановеберметр, содержащий источник переменного тока, подключенный к входу преобразовател , который состоит из двух перемагничиаающих и измерительных обмоток, к выходу преобразовател подключены последовательно соединенные компенсирующа обмотка, .дроссель и конденсатор, параллельно которому подсоединены переменный резистор и милливольтметр Cll.According to the main author. St. There is a known single-nomebermeter containing an alternating current source connected to the converter input, which consists of two re-magnetizing and measuring windings, a series-connected compensating winding, a choke and a capacitor in parallel with which the variable resistor and millivoltmeter Cll are connected to the converter output.

Недостатком известного нановеберметра вл етс то, что при испытаний образцов различного вида сила перемагничивающего тока не мен етс , поэтому возможен перегрев преобразовател , что отрицательно сказываетс на точности измерений. Кроме того , невозможно снимать характеристики образцов в зависимости от величины перемагничивающего пол .A disadvantage of the known nano-gauge is that when testing samples of various types, the strength of the magnetization reversal current does not change, therefore overheating of the transducer is possible, which adversely affects the accuracy of measurements. In addition, it is impossible to take the characteristics of the samples, depending on the magnitude of the magnetization reversal field.

Цель изобретени - повышение точности нановеберметраПоставленна цель достигаетс тем, что нановеберметр, содержащий источник переменного тока, подключенный к входу преобразовател , к выходу которого подключены последовательно соединенные компенсирующа обмотка, The purpose of the invention is to improve the accuracy of a nano-gauge. The goal is achieved by the fact that a n-gauge instrument contains an alternating current source connected to the input of the converter, the output of which is connected in series with a compensating winding,

10 дросель и конденсатор/ параллельно которому подсоединены переменный резистор и милливольтметр, снабжен сдвоенным магазином конденсаторов, .секции которого включены между полюIS сами источника переменного тока и входами преобразовател .A 10 throttle and a capacitor / in parallel with which a variable resistor and millivoltmeter are connected, is equipped with a double capacitor box, the sections of which are connected between the field of the AC source and the inputs of the converter.

На чертеже приведена принципиальна схема нановеберметра.The drawing shows a schematic diagram of a nano-gauge.

Нановеберметр содержит источник 1 Nanobermeter contains source 1

Claims

20 AC, the poles of which are connected via sections 2 and 3 of the dual capacitor store to the converter inputs. Converter A consists of remagnetising windings 5 and 6 and measuring windings 7 and 8. The output of converter 4 is connected in series with a compensating winding 9, throttle 1, and pick-up sensor 11. Parallel to the capacitor 11, a variable resistor 12 and millivoltmeter 13 are connected. The remagnetization windings 5 and the converter form with sections 2 and 3 of the dual capacitor store a series oscillating circuit, the current strength of which depends on the degree of approach to the resonant mode, simultaneously (the switching of the capacitors of sections 2 and 3 can control the current in wide ones; Test sample 1L enters into the converter so that its shaft cov- ers one of, pairs of reversal reversal 5 and 6 and measuring 7 and 8 windings, and according to millivoltmeter C values: 0 its magnetic TiapaMeTpax. It (ebmot 9 is designed to compute the output EMF, the choke 10 serves as sensitivity). Variable resistor 12 allows you to smoothly adjust 04 sensitivity by shunting capacitor 11. Measurement accuracy is improved by choosing the optimal measurement mode by adjusting the current in sections 2 and 3 of the dual capacitor store, as well as by selecting capacitor capacitances in such a way that identical capacitors of sections 2 and 3 are always in the circuit, and the circuit symmetry with respect to the source n alternating current is not disturbed. . , - ..:, Thus, in comparison with the known, the proposed nano-gauge possesses higher measurement accuracy and advanced functionality. The formula of the invention Nanobermeter auth. St. No. 277081, characterized in that, with the aim of increasing its accuracy, it is equipped with a capacitor coupling shop, sections of which are included between the poles of the AC source and the converter inputs. Information Systems Information taken into account during the examination 1. USSR author's certificate JT 277081, cl. G 01 R 33/02 05/12/68.