MD3897F1 - Process for measuring the section of an insulated wire in the casting process - Google Patents

Process for measuring the section of an insulated wire in the casting process

Info

Publication number
MD3897F1
MD3897F1 MDA20070269A MD20070269A MD3897F1 MD 3897 F1 MD3897 F1 MD 3897F1 MD A20070269 A MDA20070269 A MD A20070269A MD 20070269 A MD20070269 A MD 20070269A MD 3897 F1 MD3897 F1 MD 3897F1
Authority
MD
Moldova
Prior art keywords
microfire
coil
molded
standard
section
Prior art date
Application number
MDA20070269A
Other languages
Romanian (ro)
Other versions
MD3897G2 (en
Inventor
Nicolae Dimitrachi
Original Assignee
Universitatea Tehnica A Moldovei
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 by Universitatea Tehnica A Moldovei filed Critical Universitatea Tehnica A Moldovei
Priority to MDA20070269A priority Critical patent/MD3897G2/en
Publication of MD3897F1 publication Critical patent/MD3897F1/en
Publication of MD3897G2 publication Critical patent/MD3897G2/en

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  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

Inventia se refera la tehnica de masurare si poate fi utilizata la turnarea firelor conductoare sau semiconductoare in izolatie. Procedeul de masurare a sectiunii unui fir conductor in izolatie in procesul de turnare, de exemplu, a unui microfir conductor in izolatie de sticla, consta in extinderea acestuia dintr-o preforma de metal introdusa intr-un tub din material izolator in stare de suspensie cu un camp electromagnetic de frecventa inalta si bobinarea microfirului turnat pe o carcasa metalica, formand o bobina cu microfir turnat. Masurarea sectiunii microfirului se efectueaza prin compensarea rezistentei echivalente electrice Zx a bobinei cu microfir turnat cu o rezistenta echivalenta electrica Z0 a unei bobine cu microfir etalon, care se conecteaza in paralel la intrarea diferentiala a unui amplificator operational si in serie cu o ramura in serie formata din portiunea de microfir masurat si bobina cu microfir turnat. Aceasta ramura este conectata la intrarea neinversoare a amplificatorului operational. Circuitul in serie format din bobina cu microfir etalon si ramura in serie formata din portiunea de microfir masurat si bobina cu microfir turnat se uneste la o sursa de curent sinusoidal de valoare impusa, unde curentul i(t) de la sursa, trecand prin circuitul in serie, formeaza caderi de tensiuni Ux=Zxi(t) pe bobina cu microfir turnat, U0=Z0i(t) pe bobina cu microfir etalon si Ur=i(t)rl pe portiunea de microfir masurat. Tensiunea U0 se defazeaza la Pi prin amplificatorul operational si se repeta dupa valoare la iesirea lui, unde se insumeaza cu suma de tensiuni Ux+Ur, formand tensiunea sumara masurata US=-U0+Ur+Ux=i(t)[-Z0+rl+Zx], care atunci cand Zx=Z0, i(t)=const si l=const este egala cu i(t)rl, care este proportionala cu rezistenta r si invers proportionala cu sectiunea de microfir etalon Ur ~ S0-1.The invention relates to the measurement technique and can be used for casting conductive or semiconductor wires in isolation. The process of measuring the section of a conductive wire in isolation in the casting process, for example, of a conductive microfire in glass insulation, consists in its extension from a metal preform inserted into a tube of insulating material in suspension state with a high frequency electromagnetic field and the winding of the molded microfire on a metal housing, forming a molded microfire coil. The measurement of the microfire section is performed by compensating the electrical equivalent resistance Zx of the coil with microfire cast with an electrical equivalent resistance Z0 of a coil with standard microfire, which is connected in parallel to the differential input of an operational amplifier and in series with a branch in series formed. from the measured microfire portion and the molded microfire coil. This branch is connected to the non-inverting input of the operational amplifier. The serial circuit consisting of the standard microfire coil and the serial branch consisting of the measured microfire portion and the molded microfire coil is joined to a sinusoidal current of imposed value, where the current i (t) from the source, passing through the circuit in series, it forms voltage drops Ux = Zxi (t) on the coil with molded microfire, U0 = Z0i (t) on the coil with standard microfire and Ur = i (t) rl on the measured microfire portion. The voltage U0 is shifted to Pi by the operational amplifier and is repeated by value at its output, where it is summed with the sum of voltages Ux + Ur, forming the measured voltage US = -U0 + Ur + Ux = i (t) [- Z0 + rl + Zx], which when Zx = Z0, i (t) = const and l = const is equal to i (t) rl, which is proportional to the resistance r and inversely proportional to the standard microfire section Ur ~ S0-1 .

MDA20070269A 2007-10-08 2007-10-08 Process for measuring the section of an insulated wire in the casting process MD3897G2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MDA20070269A MD3897G2 (en) 2007-10-08 2007-10-08 Process for measuring the section of an insulated wire in the casting process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MDA20070269A MD3897G2 (en) 2007-10-08 2007-10-08 Process for measuring the section of an insulated wire in the casting process

Publications (2)

Publication Number Publication Date
MD3897F1 true MD3897F1 (en) 2009-04-30
MD3897G2 MD3897G2 (en) 2010-05-31

Family

ID=40901729

Family Applications (1)

Application Number Title Priority Date Filing Date
MDA20070269A MD3897G2 (en) 2007-10-08 2007-10-08 Process for measuring the section of an insulated wire in the casting process

Country Status (1)

Country Link
MD (1) MD3897G2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD3961G2 (en) * 2008-01-09 2010-04-30 Технический университет Молдовы Device for measuring the linear resistance of the glass-insulated wire in the casting process
MD3985G2 (en) * 2007-10-08 2010-06-30 Технический университет Молдовы Installation for manufacturing of glass-insulated microwire
MD173Z (en) * 2008-07-25 2010-10-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Process for the manufacture of bifilar microwire
MD280Z (en) * 2009-12-22 2011-04-30 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Process for manufacture of Te microwire in glass insulation
MD4092C1 (en) * 2009-09-24 2011-08-31 Технический университет Молдовы Microwire casting installation
MD4100C1 (en) * 2009-09-24 2011-09-30 Технический университет Молдовы Method for manufacturing a resistor from a conductor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD690Z (en) * 2012-09-10 2014-09-30 Технический университет Молдовы Method for measuring the cross-section of a wire in the casting process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU365738A1 (en) * 1970-01-12 1973-01-08 DEVICE FOR CONTROLLING OF RUNNING RESISTANCE OF THE MICROPRODUCT IN GLASS INSULATION IN THE PROCESS OF CASTING
MD2249G2 (en) * 2003-02-11 2004-02-29 Технический университет Молдовы Device for measuring the resistance of the elements from the isolated condcutor in the winding process
MD2645G2 (en) * 2004-07-16 2005-08-31 Технический университет Молдовы Device for measuring the linear resistance of the insulated wire
MD3216G2 (en) * 2006-03-21 2007-07-31 Технический университет Молдовы Device for measuring the linear resistance of the insulated wire

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD3985G2 (en) * 2007-10-08 2010-06-30 Технический университет Молдовы Installation for manufacturing of glass-insulated microwire
MD3961G2 (en) * 2008-01-09 2010-04-30 Технический университет Молдовы Device for measuring the linear resistance of the glass-insulated wire in the casting process
MD173Z (en) * 2008-07-25 2010-10-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Process for the manufacture of bifilar microwire
MD4092C1 (en) * 2009-09-24 2011-08-31 Технический университет Молдовы Microwire casting installation
MD4100C1 (en) * 2009-09-24 2011-09-30 Технический университет Молдовы Method for manufacturing a resistor from a conductor
MD280Z (en) * 2009-12-22 2011-04-30 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Process for manufacture of Te microwire in glass insulation

Also Published As

Publication number Publication date
MD3897G2 (en) 2010-05-31

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Legal Events

Date Code Title Description
FG4A Patent for invention issued
KA4A Patent for invention lapsed due to non-payment of fees (with right of restoration)
MM4A Patent for invention definitely lapsed due to non-payment of fees