SU398902A1 - DEVICE FOR REMOVING THE MAGNETIZATION CHARACTERISTICS - Google Patents

DEVICE FOR REMOVING THE MAGNETIZATION CHARACTERISTICS

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Publication number
SU398902A1
SU398902A1 SU1715534A SU1715534A SU398902A1 SU 398902 A1 SU398902 A1 SU 398902A1 SU 1715534 A SU1715534 A SU 1715534A SU 1715534 A SU1715534 A SU 1715534A SU 398902 A1 SU398902 A1 SU 398902A1
Authority
SU
USSR - Soviet Union
Prior art keywords
winding
current
key
magnetization
source
Prior art date
Application number
SU1715534A
Other languages
Russian (ru)
Inventor
А. А. Евликов А. И. Борисов Г. Б. Черников
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1715534A priority Critical patent/SU398902A1/en
Application granted granted Critical
Publication of SU398902A1 publication Critical patent/SU398902A1/en

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  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Measuring Magnetic Variables (AREA)

Description

1one

Известные устройства дл  сн ти  характеристик намагничивани , содержащие источник посто нного тока, обмотку на образце, ключ и регистрирующий нрибор, сложны и ими невозможно автоматически записывать характеристики из-за необходимости проведени  замеров дискретно но отклонению стрелки гальванометра, причем отдельные замеры завис т от субъектных факторов.The known devices for taking magnetization characteristics, containing a source of direct current, a winding on the sample, a key and a recording instrument, are complex and they cannot automatically record the characteristics due to the need to take measurements discretely but with a deviation of the arrow of the galvanometer. .

Дл  упрощени  и автоматизации записи характеристики намагничивани  в предлагаемом устройстве обмотка образца нодключена к источнику носто нного тока через встречно включенные два стабилитрона.To simplify and automate the recording of the magnetization characteristic in the proposed device, the sample winding is connected to the source of a constant current through two opposite zener diodes connected.

На фиг. 1 изображена схема описываемого устройства; на фиг. 2 - кривые изменени  тока в обмотке испытываемого образца во времени.FIG. 1 shows a diagram of the described device; in fig. 2 - curves of the current change in the winding of the test sample over time.

Устройство состоит из источника / лосто нного тока, ключа 2, встречно включенных нараллельно обмотке 3 двух стабилитронов 4, щунта 5, включенного последовательно с обмоткой , и осциллографа 6.The device consists of a source / residual current, a key 2, which are inversely connected in parallel to the winding 3 of two zener diodes 4, a shunt 5 connected in series with the winding, and an oscilloscope 6.

При включении ключа в результате возникающего переходного процесса ток в цени обмотки измен етс  (фиг. 2). Так как напр жение на обмотке стабилизировано, нотокосценление обмотки измен етс  с посто нной скоростью:When the key is turned on, as a result of a transient process, the current in the value of the winding changes (Fig. 2). Since the voltage on the winding is stabilized, the winding note value changes at a constant rate:

- и dt - and dt

у dB ,, .ui rz: и сu dB ,, .ui rz: and with

at В- at B-

(,(,

W-SW-S

где Ч - потокосценление обмотки, В - индукци , ш - число витков отмотки, 5 - сечение сердечника, UCT - напр жение стабилизации, / - врем .where H is the winding flux estimate, B is the induction, w is the number of turns of the winding, 5 is the cross section of the core, UCT is the stabilization voltage, / is the time.

Таким образом, индукци  в сердечнике измен етс  пропорционально времени с коэффициентом нронорциональности:Thus, induction in the core varies in proportion to time with the coefficient of nonnorrationality:

UcrUcr

2020

wSwS

Напр женность пол  измен етс  пропорционально току обмотки с коэффициентом пропорциональностн:The field strength varies in proportion to the winding current with a ratio proportional to:

Кн Kn

срwed

где /ср - средн   длина магнитной силово линии. При включении ключа осциллографом записываетс  крива  а (фиг. 2) изменени  тока (t), котора  в масштабе  вл етс  характеристикой намагничивани . При отключении ключа ток спадает по кривой Ь,  вл ющейс  в масштабе спинкой частного цикла перемагничивани . Если кривую Ь зеркально отобразить и перенести параллельно кривой Ь, то можно построить половину симметричного цикла. Вторую половину цикла стро т графически, исход  из ее симметрии, или снимают при изменении пол рности источника тока ключом. Предмет изобретени  Устройство дл  сн ти  характеристик на магничивани , содержащее источник посто нкого тока, обмотку на образце, служащую дл  намагничивани  и измерени , ключ и регистрирующий нрибор, отличающеес  тем, что, с целью унрощени  и автоматизации записи характеристики намагничивани , оно снабжено включенными встречно двум  стабилитронами , введенными в измерительную схему между выходами обмотки образца и источника посто нного тока.where / av is the average length of the magnetic field line. When the key is turned on, the oscilloscope records the curve a (Fig. 2) of the change in current (t), which in scale is a characteristic of magnetization. When the key is turned off, the current drops along the curve b, which is the scale of the back of the particular cycle of the magnetization reversal. If the curve b is mirrored and transferred parallel to the curve b, then one can construct a half symmetric cycle. The second half of the cycle is constructed graphically, based on its symmetry, or removed when the current source changes polarity with a key. Subject of the invention A device for characterizing magnetising, containing a source of direct current, a winding on a sample, used for magnetization and measurement, a key and a recording device, characterized in that, in order to improve and automate the recording of the magnetization characteristic, it is equipped with two opposite ones. zener diodes introduced into the measuring circuit between the outputs of the sample winding and the DC source.

fpuZ.ZfpuZ.Z

SU1715534A 1971-11-16 1971-11-16 DEVICE FOR REMOVING THE MAGNETIZATION CHARACTERISTICS SU398902A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1715534A SU398902A1 (en) 1971-11-16 1971-11-16 DEVICE FOR REMOVING THE MAGNETIZATION CHARACTERISTICS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1715534A SU398902A1 (en) 1971-11-16 1971-11-16 DEVICE FOR REMOVING THE MAGNETIZATION CHARACTERISTICS

Publications (1)

Publication Number Publication Date
SU398902A1 true SU398902A1 (en) 1973-09-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1715534A SU398902A1 (en) 1971-11-16 1971-11-16 DEVICE FOR REMOVING THE MAGNETIZATION CHARACTERISTICS

Country Status (1)

Country Link
SU (1) SU398902A1 (en)

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