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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Design and optimization of special low-level amplifier for measurement of air ions
 Zdražil, Lukáš ; Bartušek, Karel (referee) ; Roubal, Zdeněk (advisor)
This Master thesis deals with low-current measurement in order of picoamps up to a few tens of femtoamps. Such low currents measuring is necessary for determination of air ions concentration. Disturbances, which are otherwise negligible for ordinary measurements must be considered. For example, leakage currents and noise generated in measuring device circuit. The choice of a precise operation amplifier with low input bias current is as important as the selection of low noise passive components. The aim of the thesis is to design and implement a precise low-level amplifier for the purposes of air ions concentration measurements.
Detailed record
Design And Optimization Of Special Low-Level Amplifier For Measurement Of Air Ions
 Zdražil, Lukáš
This paper deals with low-current measurement in order of picoamps up to a few dozens of femtoamps. Such low currents measuring is necessary for determination of air ions concentration. Disturbances, which are otherwise negligible for ordinary measurements must be considered. For example, leakage currents and noise generated in measuring device circuit. The choice of a precise operation amplifier with low input bias current is as important as the selection of low noise passive components.
Detailed record
Design and optimization of special low-level amplifier for measurement of air ions
 Zdražil, Lukáš ; Bartušek, Karel (referee) ; Roubal, Zdeněk (advisor)
This Master thesis deals with low-current measurement in order of picoamps up to a few tens of femtoamps. Such low currents measuring is necessary for determination of air ions concentration. Disturbances, which are otherwise negligible for ordinary measurements must be considered. For example, leakage currents and noise generated in measuring device circuit. The choice of a precise operation amplifier with low input bias current is as important as the selection of low noise passive components. The aim of the thesis is to design and implement a precise low-level amplifier for the purposes of air ions concentration measurements.
Detailed record

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