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National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.01 seconds. 
Wideband Amplifier Final Stage 5kHz - 1,5 GHz
 Galajda, Jan ; Šebesta, Jiří (referee) ; Urbanec, Tomáš (advisor)
This work is focused on the problem of design of the wideband amplifier final stage, which is designed as a replacement for the old insufficient amplifier, which works in the frequency band from 5 KHz to 1.5 GHz. First part of the work is dedicated to theoretical introduction of the problem. Second part of the work describes the created matlab scripts for automatic measurement of the amplifiers parameters via SCPI commands. The third part describes choice of the new active element based on the measured parameters of the original amplifier.
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Precise measurement of semiconductors
 Smělík, Martin ; Šebesta, Jiří (referee) ; Dřínovský, Jiří (advisor)
The aim of this bachelor´s thesis was design a laboratory workplace for precise measurement of the stability output parameters of semiconductors. The thermostat is also part of this workplace. The thermostat is maintaining a constant temperature measured semiconductor. The entire laboratory preparation is controlled by a computer via USB. The program is created in control environment Agilent VEE for automatic measurement that semiconductor components.
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Automatic System for Load Characteristics of Power Supplies Measurement
 Vojtek, Michal ; Dřínovský, Jiří (referee) ; Šebesta, Jiří (advisor)
The target of this work is create device, which will automatic measure values for find out loading characteristics of power supply with help of built-in electronic load. In case, that source of current supply will for example DC/DC convertor, measurement of input current and input voltage will be possible. Then there is no problem with determinate total efficiency of this power supply. Measuring system will be conected via serial interface of type USB with computer. It will be possible to save found out values with help of control program for nother processing. Control unit of whole system will be suitable microcontroller.
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