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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.00 seconds. 
Power audio amplifier used for laboratory measurements
 Herceg, Erik ; Petržela, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
This Bachelor thesis deals with the scheme of low-frequency amplifier in AB class which is going to be used for laboratory measurement. The scheme was realized with semiconductor components and the power part of the amplifier was made of bipolar transistor. The main part of the work was focused on the measurement protocol. The functionality of the amplifier was verified and simulated in the theoretical way and met the criteria. The form of the measurement protocol was realized in agreement with instructions and contains all the required parameters of the measurement. The objective of this thesis is to explain how to design an amplifier and to illustrate the measurment methods of its parameters
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Power audio amplifier with two-way speaker system
 Rystvej, Matej ; Petržela, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
The aim of this bachelor thesis was a design of a stereo amplifier with an appropriate loudspeaker system for home listening. The amplifier has the ability to be switched over between high and low output power mode. This means it is possible to be used also with an other loudspeaker system with lower input power rating, and it will be prepared for possible future implementation of an active frequency filter, which will fit the frequency response to this designed loudspeaker system by amplifying some frequencies. This thesis contains design of the softstart circuit, power amplifier, preamplifier circuit, the output power switch, the delayed loudspeaker connecting circuit and the loudspeaker system.
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