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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Class D audio amplifier for laboratory measurements
 Svorad, Adam ; Petržela, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
Bachelor’s thesis delves into a field of Class-D audio amplifiers. Keystone part of the work summarizes theoretical knowledge focused on measuring techniques of lowfrequency amplifiers and audio amplifier design. A deeper insight into building blocks of a general Class-D amplifier is also presented. Gained erudition is applied in the second part, which is devoted to a construction of the device. Exceptional attention is drawn to the design of robust external driver and sophisticated output analog filter. Blueprints required for a PBC layout are provided as well as outputs of performance measurements taken of a fabricated prototype.
Detailed record
High Power Sinusoidal Generator With Use Of Pcm-Pwm Converter
 Rozum, Stanislav
This paper deals with the study of generating a sinusoidal signal with output power up to hundreds of watts. Selected microcontroller calculates sinusoidal data which are used as the input for PWM module. Four outputs of the module directly drive four transistors of H bridge which ensures high output power. Purposed method of calculating integer sinusoidal samples allows changing the frequency at any time with minimal latency.
Detailed record
Class D audio amplifier for laboratory measurements
 Svorad, Adam ; Petržela, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
Bachelor’s thesis delves into a field of Class-D audio amplifiers. Keystone part of the work summarizes theoretical knowledge focused on measuring techniques of lowfrequency amplifiers and audio amplifier design. A deeper insight into building blocks of a general Class-D amplifier is also presented. Gained erudition is applied in the second part, which is devoted to a construction of the device. Exceptional attention is drawn to the design of robust external driver and sophisticated output analog filter. Blueprints required for a PBC layout are provided as well as outputs of performance measurements taken of a fabricated prototype.
Detailed record

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