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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Intrinsic power supply
 Wurzel, Tomáš ; Bejček, Ludvík (referee) ; Beneš, Petr (advisor)
This thesis discusses development of intrinsically safe power supply designed for powering devices installed in areas with potentially explosive atmospheres. In this context, the work explains the concepts of intrinsic safety. Thesis describes the basic definition of intrinsically safe equipment, device parameter requirements and description of related standards matching ATEX directive. Thesis focuses on the design of internal circuits of intrinsically safe power supply whose principles are explained on the block diagram. Concrete parts of the block diagram are discussed and parameters of suitable components are calculated. The power supply is then built and its parameters are measured.
Detailed record
Intrinsic power supply
 Wurzel, Tomáš ; Bejček, Ludvík (referee) ; Beneš, Petr (advisor)
This thesis discusses development of intrinsically safe power supply designed for powering devices installed in areas with potentially explosive atmospheres. In this context, the work explains the concepts of intrinsic safety. Thesis describes the basic definition of intrinsically safe equipment, device parameter requirements and description of related standards matching ATEX directive. Thesis focuses on the design of internal circuits of intrinsically safe power supply whose principles are explained on the block diagram. Concrete parts of the block diagram are discussed and parameters of suitable components are calculated. The power supply is then built and its parameters are measured.
Detailed record
Intrinsically safe line analyzer
 Wurzel, Tomáš ; Málek, Petr (referee) ; Beneš, Petr (advisor)
The main goal of this thesis is to design intrinsically safe line analyzer. Thesis describes a device that consists of three measuring circuits and a communication circuit. The device is required to measure posistor resistance, isolation state of power cable and line continuity in potentially explosive areas. Document describes basic requirements of ATEX directive matching standards that are related to device. The function of each logical part of the device is described with help of block diagram. After the basic function description an electrical schematic design and component selection is discussed. After this a printed circuit board design follows. Another part of the thesis describes testing software development. At the end of the document the device is assembler and its basic function is verified.
Detailed record

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