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dc.contributor.authorSripayang, Klaoen_US
dc.contributor.authorเกล้า ศรีพยางค์en_US
dc.date.accessioned2023-03-10T04:43:56Z
dc.date.available2023-03-10T04:43:56Z
dc.date.issued2023-03-10
dc.identifier.urihttp://repository.rmutp.ac.th/handle/123456789/3987
dc.descriptionวิทยานิพนธ์ (วศ.ม.) -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2564en_US
dc.description.abstractThis thesis presented the design and construction of an adaptive active band-pass filter by using a tachometer circuit. The main part was the multi voltage-mode filter circuit based on an operational transconductance amplifier, which could automatically adjust the center frequency to adapt to the input signal frequency by the tachometer circuit. The frequency error value in the center frequency was set to be ≤ 3% of the input signal. Furthermore, the proposed filter could support the input signal in the frequency range of 10 Hz - 10 kHz. From the simulation and experimental results of the proposed prototype filter, it could respond to the frequency according to the theory of the band-pass filter and the error in choosing the center frequency, which was 1.45 % and 2.6 %, respectively (below the set error value of 3 %). Therefore, the proposed filter could be used for real application. The working principles of the proposed prototype filter could also be applied to the noise attenuation circuit of an electrocardiogram machine. Moreover, this research could be used as a guideline study for those who want to develop other types of adaptive active filters for higher efficiency.en_US
dc.description.sponsorshipRajamangala University of Technology Phra Nakhonen_US
dc.language.isothen_US
dc.subjectElectric circuitsen_US
dc.subjectวงจรไฟฟ้าen_US
dc.subjectElectric metersen_US
dc.subjectเครื่องวัดไฟฟ้าen_US
dc.subjectAdaptive active band-pass filteren_US
dc.subjectเครื่องกรองความถี่แบนด์พาสปรับตัวได้en_US
dc.subjecttachometer circuiten_US
dc.subjectวงจรแทคโคมิเตอร์en_US
dc.subjectoperational transconductance amplifier (OTA)en_US
dc.subjectตัวขยายความนำen_US
dc.subjectcenter frequencyen_US
dc.subjectความถี่ศูนย์กลางen_US
dc.titleAn adaptive active band-pass filter by using tachometer circuiten_US
dc.title.alternativeเครื่องกรองความถี่แบนด์พาสชนิดแอคทีฟที่ปรับตัวได้โดยใช้วงจรแทคโคมิเตอร์en_US
dc.typeThesisen_US
dc.contributor.emailauthorarit@rmutp.ac.then_US


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