Title:Павликянски ръкопис 174(767) XIX век хартия
Abstract:Съдържание: с.1–263 пише първа ръка; с.244–299 пише втора ръка; с.305–306 първа ръка пише съдържание на основната част на ръкописа, до с. 263Library:
Народна библиотека "Иван Вазов"
Title:Експериментално определяне на динамичните характеристики на електромеханични измервателни уреди
Author:Маджарова, Мария Димитрова; Madjarova, Marija DimitrovaDate:1995Abstract:The amplitude — frequency characteristic of a permanent-magnet moving - coil (PrifIliC) instrument has been experimentally obtained. The prelimenary frequency response characteristic has been determined through the approximation of the logarithmic amplitude —frequency curve. The both performances: Theoretical and experimental, has been ...Library:
Технически университет - София
Title:Върху инвариантността на определителните изрази при различните състояния на променливотоковите измервателни мостове
Author:Ставракев, Желязко Анастасов; Иванов, Иван Николаев; Туренков, Васил Николаев; Stavrakev, Zhelyazko Anastasov; Ivanov, Ivan Nikolaev; Turenkov, Vasil NikolaevDate:1995Abstract:In the article, it is shown, that for every equilibrated or quasiequilibrated state for a given type of four branches bridge, the determinated expression of the unknown parameter, which can be measured, is the same. It is shown as well, that if one of quasiequili-brated states is possible (amplitude, zero-phase, square phase) the same ...Library:
Технически университет - София
Title:Теорема за съществуването на ефективен коефициент на усилване на веригата на правото предаване
Author:Станчев, Иван Борисов; Stanchev, Ivan BorisovDate:1995Abstract:A theorem, according to which the three, transmission circuit of each amplifier with negative feedback is characterized by a coefficient of transmission, named efficacious gain. This coefficient according to the theorem is deffinited as multiplication of the gain's own of the electronic amplifiers and the coefficient of transmission of the ...Library:
Технически университет - София
Title:Възможности за намаляване на грешките от входните токове на операционните измервателни усилватели
Author:Станчев, Иван Борисов; Куртев, Иван Александров; Иванов, Иван Николаев; Stanchev, Ivan Alexandrov; Kurtev, Ivan Alexandrov; Ivanov, Ivan NikolaevDate:1995Abstract:Possibilities to decrease the input current errors at some circuits of measurement amplifiers are examined. First a method is suggested for compensation of the voltage drop, which appears in math-wig precise tension divider placed at the input of the amplifier. At the second for-the inverting amplifier with variable gain an .optimal value ...Library:
