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Relevant bibliographies by topics / Aktivní filtry

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Academic literature on the topic 'Aktivní filtry'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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Journal articles on the topic "Aktivní filtry"

1

Nikolić, Kristina. "PROJEKTOVANJE AKTIVNOG NISKOPROPUSNOG FILTRA U 0,18 µm CMOS TEHNOLOGIJI." Zbornik radova Fakulteta tehničkih nauka u Novom Sadu 35, no. 01 (December 23, 2019): 181–84. http://dx.doi.org/10.24867/06be44nikolic.

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U ovom radu je projektovan aktivni Batervortov niskopropusni filtar šestog reda u 0,18 μm CMOS tehnologiji. Topologija se sastoji iz kaskadne veze tri filtra drugog reda. Filtar drugog reda je projektovan korišćenjem Salen-Ki topologije koja se sastoji iz dvostepenog operacionog pojačavača, dva otpornika i dva kondenzatora. Projektovani filtar ima maksimalno slabljenje u propusnom opsegu 9,5217 mdB i minimalno slabljenje u nepropusnom opsegu 50 dB. Granična učestanost je 52,3 kHz, a potrošnja kola 2,27 mW.

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Rummich, E., and S. N. Kalaschnikow. "Oberschwingungsarme Netzeinspeisung von Windkraftanlagen mit Hilfe von aktiven Filtern." e & i Elektrotechnik und Informationstechnik 117, no. 2 (February 2000): 129–33. http://dx.doi.org/10.1007/bf03158600.

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3

Mičaník, Tomáš, Jiří Oceánský, Jiří Lisník, and Tomáš Ocelka. "Testování sorpčních filtrů na bázi granulovaného aktivního uhlí pro účely dočišťování pitné vody." Vodohospodářské technicko-ekonomické informace 62, no. 2 (May 4, 2020): 17. http://dx.doi.org/10.46555/vtei.2020.02.001.

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4

Haider, Katharina, Michael Halwachs, and Nikolaus August Sifferlinger. "Potenzial und Grenzen statistischer Unfallzahlen im österreichischen Berg- und Tunnelbau." BHM Berg- und Hüttenmännische Monatshefte 166, no. 6 (June 2021): 284–300. http://dx.doi.org/10.1007/s00501-021-01118-x.

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ZusammenfassungArbeits- und Gesundheitsschutz hat in allen Bereichen höchste Priorität. Um Maßnahmen zur Unfallvermeidung stetig zu verbessern, müssen diese ständig anhand des tatsächlichen Unfallgeschehens analysiert und evaluiert werden. Die wichtigsten Ansatzpunkte einer aktiven und wirksamen Unfallprävention können in einem ersten Schritt durch eine Auswertung von statistischen Unfallzahlen identifiziert werden.In diesem Artikel werden die Grundlagen der Methodik der Europäischen Statistik über Arbeitsunfälle (ESAW) dargelegt und Datensätze der Allgemeinen Unfallversicherungsanstalt (AUVA) zur statistischen Darstellung des Unfallgeschehens im österreichischen Berg- und Tunnelbau herangezogen.Das daraus generierte Unfallspektrum wird für den Bergbau mit den Daten aus den Montanhandbüchern verglichen. Zudem werden die Daten des Berg- und Tunnelbaus gegenübergestellt. Es zeigt sich, dass aus den zusammengefassten Daten der statistischen Unfallzahlen kein signifikanter Zuwachs an Wissen über Unfallursachen gewonnen werden kann. Die meisten Unfälle betreffen die oberen und unteren Extremitäten und werden durch Verlust der Kontrolle über Arbeitsmittel, Sturz/Absturz von Personen und Bewegung des Körpers ohne und mit körperlicher Belastung verursacht.Der Fokus wird daher darauf gelegt, wie die Datensätze und die Variablen für statistische Auswertungen handzuhaben und zu filtern sind. Es wird diskutiert, welche Möglichkeiten und Probleme sich aus der Zuordnung von Unfällen zu Wirtschaftsklassen ergeben. Als Alternative wird untersucht, ob die Codierung der ESAW genutzt werden kann, um Unfälle nach bestimmten Arbeitsumgebungen zu filtern und den Bereichen „über Tage“ und „unter Tage“ zuzuordnen. Dabei ergeben sich keine eindeutigen Ergebnisse der Korrelation zwischen den Wirtschaftsklassen des Berg- und Tunnelbaus und den Arbeitsumgebungen.Letztendlich können konkrete Maßnahmen nur dann gesetzt werden, wenn der genaue Unfallhergang mit all den beteiligten Faktoren, Gegenständen, Ursachen und Kausalitäten bekannt ist.

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ina, D. Von )., and J. Nastran. "Parallel active power filter for single- and three-phase non-linear loads (Paralleles aktives Leistungsfilter für ein- und dreiphasige nichtlineare Last)." Electrical Engineering (Archiv fur Elektrotechnik) 81, no. 4 (November 5, 1998): 217–23. http://dx.doi.org/10.1007/s002020050043.

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Tuttas, C. "Regelung von Blindleistungskompensatoren mit aktiven Filtern / Control of reactive power compensators with active filters." at - Automatisierungstechnik 34, no. 1-12 (January 1986). http://dx.doi.org/10.1524/auto.1986.34.112.302.

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Dissertations / Theses on the topic "Aktivní filtry"

1

Fröhlich, Lubomír. "Aktivní kmitočtové filtry pro vyšší frekvence." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-233616.

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This thesis deals with the synthesis and optimization of frequency analogue filters with modern active elements usable for higher frequencies. The thesis is divided into three parts, the first part deals with the problematic concerning Leap-Frog combined ARC structure. Due to a difficult design, this method is not described in a detail and used in practice, although it shows e.g. low sensitivity. Firstly, a complete analysis of individual filters was made (for and T endings) and consequently these findings were used during implementation of this method to NAF program. Finally, samples of real filters were realized (for verification of functioning and correct design). Another very interesting topic concerning filters is usage of coupled band-pass for small bandwidth, where it is necessary to solve the problems concerning ratio of building elements values, but also price, quality, size of coils, sensitivity, Q factors, coefficients etc. That is why in practice a coil is very often substituted with other equivalent lossy and lossless blocks which create ARC filters structure. The design and the possibility of usage of lossy grounded elements were described here (such as synthetic inductors, frequency dependent negative resistor). Some parts of the design are individual computer sensitivity analysis, setting of usage and quality comparison of individual lossy grounded blocks. Besides, a program for these elements was created, it is useful for a quick design and depiction of transfer characteristics. The third part deals with the usage of tuning universal filters consisting three or more operational amplifiers, which secures its universality and possibility to create different kinds of transfer characteristic. In practice, Akerberg - Mossberg and Kerwin - Huelsman - Newcomb are the most used types of filters. These were also compared with less common universal filters. In the end, the possibility of digital tuning of universal filter with the help of digital potentiometers for filters of 10th order and frequency around 1 MHz was shown.

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2

Třeček, Stanislav. "Aktivní elektrické filtry na bázi obvodů se spínanými kapacitory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217796.

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This thesis deals with concept of universal frequency filter by application of a switched-capacitor functional block. The concept is based on the theory of switched-capacitor circuits and the theory of a design of classical frequency filters. The printed circuit board was designed based on the filter connection developed by using a software Eagle. The filter was implemented as a laboratory product. This product has been revitalized and the frequency response of all types of filters has been measured. The measured parameters were compared with the parameters set out in the technical documentation of functional block.

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Axman, Vladimír. "Obvody s moderními aktivními prvky." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-233441.

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PhD. thesis is deals about sekond order ARC filters for cascade synthezis of Active filters. Here are presented new configurations of second order filters with current conveyors usable for higher frequencies and new second order filters with current conveyors usable for electrical tunable filters. In PhD. Thesis are presented schematics and equations for new sekond order filters. There are presented also practical realizations of these filters and basic measure results.

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Homola, Radek. "Kmitočtové filtry s proudovými aktivními prvky." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218121.

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This master´s thesis is about MO-CF, DCCA and CC frequency filters with current active elements proposal. Current active elements, their features, structure and utilization are shown in introduction. A progress propose of universal filter is described in thesis. With the use of active elements has been established an universal filter with basic parameter changes capability (quality and limit frequency). SNAP software was used in this propose and the characteristics simulation have been done in OrCad-PSpice. For control changes of quality and limit frequency was used active element DCCA. The main circuit board of universal controlled filter was made with the EAGLE software. Created sample was measured for each type of filter, the different quality and limit frequency. These values were compared with simulated values of the filter.

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Šotner, Roman. "Vícefunkční přeladitelný aktivní filtr." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217657.

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The diploma thesis deals about design of the ARC multifunctional filters using modern functional blocks. These active blocks are for example voltage feedback operational amplifiers (OAs), operational transconductance amplifiers (OTAs), current conveyors (CCIIs) or current mode analog multipliers, current feedback amplifiers (CFAs), integrated circuits with switched capacitors building blocks (SCs) and digital potentiometers. The filters are studied with ideal circuit models and models of third level (3) based on voltage controlled voltage sources, voltage controlled current sources etc. (analog behavioral modelling). The professional macromodels are used for example LT 1364 (Linear Technology), EL 2045 (Intersil), LT 1228 (Linear Technology), LM 13700 (National Semiconductor), EL 2082 (Intersil), AD 844 (Analog Devices) and others. The circuits of the designed filters are simulated in PSpice (OrCAD), parasite effects and effects of the real parts are studied. Tuning and electronic adjusting parameters these filters are discussed and controlled by simulation in PSpice. Properties some simulated circuits are compare with experimental results. In conclusion individual filters are discussed and compared their properties. The constructional details of the some filters are presented at the end of this work.

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6

Holínský, Jan. "Modulární aktivní kmitočtové výhybky - laboratorní přípravek." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-433193.

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This thesis is about design of active frequency crossovers and their implementation. The work analyses particular types of circuits used in active frequency crossovers, especially circuits used for laboratory device. Then the work describes design of printed circuit boards (PCB) for the designed circuits and construction of modules for the laboratory device, when the compatibility and modularity is important for all active frequency crossovers arts. These modules are made and testing its functions. In this thesis is disassembled final proposal laboratory device and laboratory device is realized. The design and measurement of the characteristics of active frequency crossovers and correction circuits is processed in the form of a laboratory tasks.

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7

Ševčík, Břetislav. "Elektronicky řiditelný aktivní filtr 2. řádu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217790.

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The diploma thesis deals with the modern design of the control circuits for digital potentiometers and their application in analog systems. The concept of the digital control is demonstrated on the electronically controlled active 2-nd order filter and programmable oscillator. The proposed design of the active filter describes a programmable active 2-nd order filter Sallen-Key. In this circuit it is possible independently programme cut-off frequency, Q factor and type of approximation with very good accuracy. The circuits of the designed filter and designed oscillator are simulated in PSpice (OrCAD), parasite effects and effects of the real parts are studied. Properties simulated circuits are compare with experimental results. These results appreciate quality and efficiency of the digitally controlled potentiometers in dependence on variable input circuit parameters. Integral part of this project is author’s universal control program called Digipot and comunications interface for many types of digital potentiometers with I2C, SPI or Up/Down interface. It is possible to use this device for many applications. The constructional details of the filter are presented at the end of this work. The software equipment is availability on enclosed CD.

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8

Kosztyu, Tomáš. "Moderní aktivní prvky a jejich chování v lineárních blocích." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218124.

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The topic of this master’s thesis was a frequency filters and their realization using modern active elements like UVC, UCC, VFA, CFA and OTA. The base point of this thesis was designed frequency filters with these active elements, when the shape of the transfer function will be identical for all structures and compare the characteristics of active elements. The proposed frequency filters are second order with one or two active elements. In the first part of thesis are discussed basic properties of frequency filters, their properties and distribution. Next are described the general characteristics of active filters and their basic elements such as operational amplifier OTA, VFA and CFA, and recently more frequently used voltage and current conveyor. The second part is the frequency filters designed with these elements is the same transfer function. Subsequently, simulations are done all the filters and obtained the frequency response. Finally, these filters are experimentally made and made practical measurements.

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9

Szabó, Zoltán. "Příspěvek k optimální syntéze filtračních obvodů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-233563.

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The presented dissertation thesis is focused on the optimization of filtering circuit synthesis. In the five main sections of this work, the author analyzes partial problems related to several areas within the synthesis of modern filtering circuits. The first chapter constitutes an examination of elementary aspects which characterize present-day integrated circuits in voltage feedback operational amplifiers, and this main content is further complemented with a view on possible application of these circuits for the designing of filtering circuits as proposed within subsequent parts of the thesis. In this context, the second chapter contains a description of the design and optimization of digitally controlled universal filters tunable by means of digital potentiometers originally produced for audio technology. These digitally controlled circuits are increasingly utilized as analog preprocessing blocks in digital signal processing systems. The most extensive portion of the dissertation is dedicated to a complex analysis of individual configurations of economical, purposely lossy active function blocks and modern voltage operational amplifiers. This part of the thesis aims at providing a detailed insight into the characteristics of individual configurations of examined circuits; furthermore, in this respect, the author proposes a comparison of various application possibilities relating to these circuits and their wider use in the field of active frequency filters optimization. The described section of the work also includes a definition and examples of application of the designed and realized program, which facilitates significant simplification of purposely lossy ARC filters. In the penultimate part of the dissertation thesis, the design, development, and verification of a suitable synthesis procedure are presented together with the optimization of data and (in particular) power models of EMC filters. Based on the verification of characteristics inherent with the designed models of EMC filters, the suggested measuring procedure related to these filters is described, including the design of a station for measuring elementary parameters of line anti-interference devices up to very high frequencies. In the last section of the thesis, the author discusses the procedure of air ions concentration measurement through an aspiration condenser and analyzes the systematic and random errors as well as the optimization of filtration characteristics of the applied measurement method. This part includes the description of the design and characteristics of the realized fully automated measurement system with an aspiration condenser.

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Zapletal, Miroslav. "Diferenční kmitočtové filtry neceločíselného řádu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-317022.

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This diploma thesis is concentrated to fully differential and non-differential fractional-order filters with active elements. It describes how we can obtain fractional-order fully-differential filters design from non-differential design, thesis describes realization in OrCad program and simulation of this project. The first part of the thesis concerns theoretical analysis of frequency filters, active elements and fractional-order filters. The second part of the thesis includes designs of filters and simulations of differential structures and rest of non-differential structures simulation. The following part of the thesis concerns practical realization and experimental measurment of differential fractional-order filter. In the last part of this project, thesis evaluates all results which were revealed in our simulations and experimental measurment.

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Books on the topic "Aktivní filtry"

1

Filini͡uk, N. A. Aktivnye SVCh filʹtry na tranzistorakh. Moskva: "Radio i svi͡azʹ", 1987.

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2

v. Wangenheim, Lutz. Aktive Filter und Oszillatoren. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-71739-3.

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Kapusti͡an, V. I. Aktivnye RC-filʹtry vysokogo pori͡adka / V.I. Kapusti͡an. Moskva: "Radio i svi͡azʹ", 1985.

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Wangenheim, Lutz Von. Aktive Filter Und Oszillatoren: Entwurf Und Schaltungstechnik Mit Integrierten Bausteinen. Springer Verlag, 2007.

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Book chapters on the topic "Aktivní filtry"

1

Tietze, Ulrich, Christoph Schenk, and Eberhard Gamm. "Aktive Filter." In Halbleiter-Schaltungstechnik, 787–845. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-01622-6_12.

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Tietze, Ulrich, Christoph Schenk, and Eberhard Gamm. "Aktive Filter." In Halbleiter-Schaltungstechnik, 789–861. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-48554-5_12.

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Tietze, Ulrich, Christoph Schenk, and Eberhard Gamm. "Aktive Filter." In Halbleiter-Schaltungstechnik, 789–862. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-48355-8_12.

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Mildenberger, Otto. "Aktive Filter." In Entwurf analoger und digitaler Filter, 222–81. Wiesbaden: Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-90444-7_6.

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Tietze, Ulrich, and Christoph Schenk. "Aktive Filter." In Halbleiter-Schaltungstechnik, 391–457. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-07639-2_14.

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Tietze, Ulrich, and Christoph Schenk. "Aktive Filter." In Halbleiter-Schaltungstechnik, 376–439. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-662-07641-5_14.

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Tietze, Ulrich, and Christoph Schenk. "Aktive Filter." In Halbleiter-Schaltungstechnik, 376–439. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-662-07643-9_14.

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Tietze, Ulrich, and Christoph Schenk. "Aktive Filter." In Halbleiter-Schaltungstechnik, 839–901. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-11939-6_13.

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Tietze, Ulrich, and Christoph Schenk. "Aktive Filter." In Halbleiter-Schaltungstechnik, 391–457. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-662-11941-9_14.

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Morgenstern, Bodo. "Aktive Filter." In Elektronik-Aufgaben Analoge Schaltungen, 142–47. Wiesbaden: Vieweg+Teubner Verlag, 1997. http://dx.doi.org/10.1007/978-3-322-89568-4_15.

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