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National Repository of Grey Literature 6 records found  Search took 0.01 seconds. 
Frequency Filters with Current Active Elements
 Jeřábek, Jan ; Ondráček,, Oldřich (referee) ; Kolka, Zdeněk (referee) ; Vrba, Kamil (advisor)
This doctoral thesis is focused mainly on research of new current active elements and their applications in frequency filters suitable for current-mode. Work is focused on design of new filtering structures suitable for traditional single-ended signal processing and also on structures suitable for fully-differential applications. The thesis contains three designed general conceptions of KHN-type second-order filters. Adjustability of quality factor and pole frequency is provided by controllable current amplifiers that are placed properly in designed structures. Structures also contain second-generation current conveyors, multiple-output current followers, transconductance amplifiers and their fully-differential equivalents. There are lot of possible solutions that could be obtained from general structures, some of them are presented in the work. The thesis also presents several multifunctional and also single-purpose filtering structures of second-order and two variants of n-th order synthetic elements which are suitable to realize higher order filters both in single ended and fully differential type. In each case, functionality of new solutions is verified by simulations and in several cases also by real measurement.
Detailed record
Comparison of backwashing principles in mechanical filters for drinking water
 Zedníček, Václav ; Bělohradský, Petr (referee) ; Haltmar, Břetislav (advisor)
Aim of the thesis is to conclude and widen knowledge of backwashing principles in order to find potential use in Honeywell water filters. The aim of the first part is to make a research and to compare principles of backwashing in water filters. In last parts of the thesis three prototypes of backwash filters are designed and tested and feasibility study is made. Finally, their suitability for further use based on previous findings is assessed.
Detailed record
Design of sieving machine for powder metal materials
 Malý, Martin ; Koukal, Ondřej (referee) ; Koutný, Daniel (advisor)
The bachelor thesis deals with the design of a sieving machine for metal powders and issues associated with this technology. Next the thesis focuses on vibrations and his excitation. Based on specifited parametes in this thesis is created and described design of screening machine for metal powders.
Detailed record
Frequency Filters with Current Active Elements
 Jeřábek, Jan ; Ondráček,, Oldřich (referee) ; Kolka, Zdeněk (referee) ; Vrba, Kamil (advisor)
This doctoral thesis is focused mainly on research of new current active elements and their applications in frequency filters suitable for current-mode. Work is focused on design of new filtering structures suitable for traditional single-ended signal processing and also on structures suitable for fully-differential applications. The thesis contains three designed general conceptions of KHN-type second-order filters. Adjustability of quality factor and pole frequency is provided by controllable current amplifiers that are placed properly in designed structures. Structures also contain second-generation current conveyors, multiple-output current followers, transconductance amplifiers and their fully-differential equivalents. There are lot of possible solutions that could be obtained from general structures, some of them are presented in the work. The thesis also presents several multifunctional and also single-purpose filtering structures of second-order and two variants of n-th order synthetic elements which are suitable to realize higher order filters both in single ended and fully differential type. In each case, functionality of new solutions is verified by simulations and in several cases also by real measurement.
Detailed record
Design of sieving machine for powder metal materials
 Malý, Martin ; Koukal, Ondřej (referee) ; Koutný, Daniel (advisor)
The bachelor thesis deals with the design of a sieving machine for metal powders and issues associated with this technology. Next the thesis focuses on vibrations and his excitation. Based on specifited parametes in this thesis is created and described design of screening machine for metal powders.
Detailed record
Comparison of backwashing principles in mechanical filters for drinking water
 Zedníček, Václav ; Bělohradský, Petr (referee) ; Haltmar, Břetislav (advisor)
Aim of the thesis is to conclude and widen knowledge of backwashing principles in order to find potential use in Honeywell water filters. The aim of the first part is to make a research and to compare principles of backwashing in water filters. In last parts of the thesis three prototypes of backwash filters are designed and tested and feasibility study is made. Finally, their suitability for further use based on previous findings is assessed.
Detailed record

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