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Edy Sulistiyo - One of the best experts on this subject based on the ideXlab platform.
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PENGEMBANGAN TRAINER DAN JOBSHEET Audio Amplifier STEREO PADA STANDAR KOMPETENSI PEREKAYASAAN SISTEM Audio DI SMK NEGERI 3
Unesa, 2015Co-Authors: Azhar, Rizki Amirullah, Edy SulistiyoAbstract:Abstrak Penelitian ini bertujuan untuk menghasilkan media pembelajaran berupa trainer dan jobsheet Audio Amplifier stereo pada standar kompetensi perekayasaan sistem Audio di SMK Negeri 3 Jombang. Selain itu penelitian ini dilakukan untuk mengetahui kelayakan, kemampuan siswa dalam menggunakan media pembelajaran tersebut dan respon siswa. Metode yang digunakan adalah Research and Development (R&D) yang telah dibatasi menjadi 7 tahap saja yakni (1) potensi dan masalah, (2) pengumpulan data, (3) desain produk, (4) validasi desain, (5) revisi design, (6) uji coba produk, dan (7) analisa dan pelaporan. Pengumpulan data pada penelitian ini diperoleh dari hasil validasi untuk mengetahui kelayakan media yang dihasilkan, hasil penilaian kinerja praktikum siswa untuk mengetahui kemampuan siswa dalam menggunakan media trainer dan jobsheet, serta hasil respon siswa untuk mengetahui tanggapan siswa terhadap media trainer dan jobsheet yang dihasilkan. Berdasarkan hasil penelitian diperoleh kesimpulan bahwa, hasil validasi pada keseluruhan aspek yang terdapat di dalam media trainer dinyatakan baik dengan rata-rata hasil rating sebesar 81,19% dan rata-rata hasil rating validasi terhadap jobsheet sebesar 82,91% dinyatakan baik. Kemampuan siswa dalam menggunakan trainer dan jobsheet dikategorikan baik dengan hasil penilaian kinerja praktikum dari rangkaian penguat depan sebesar 80%, rangkaian pengatur nada sebesar 82,5%, rangkaian penguat daya sebesar77,5% dan gelombang suara dalam satuan decibel sebesar 85%. Respon siswa pada keseluruhan aspek yang terdapat dalam media trainer dan jobsheet mendapat respon positif dengan rata-rata hasil respon siswa sebesar 91.4% yang dikategorikan sangat baik. Hal ini menunjukkan bahwa trainer dan jobsheet Audio Amplifier stereo yang dihasilkan layak digunakan sebagai media pembelajaran. Kata Kunci : Trainer dan jobsheet Audio Amplifier stereo, Media pembelajaran, Respon siswa Abstract This research aims to produce a stereo Audio Amplifier trainer and jobsheet learning media on Audio system engineering in SMK Negeri 3 Jombang. This research also to determine the validity of the instrument, the student ability in using the learning media and student responses. That method used in this study is Research and Development (R&D) that has been limited into seven stages only (1) potential dan problem, (2) data collection, (3) product design, (4) design validation, (5) design revision, (6) field test, and (7) analysis and reporting. Data collection in this research was obtained from the results of validation to determine the validity of the media, the results of student performance assessments to determine students ability in using trainer and jobsheet, and the results of students response to determine students responses of trainer and jobsheet media has generated. Based on these research results it is concluded that, the whole validity result of trainer media is good with rating results average reach 81.19 % and the average validity result of jobsheet reach 82.91% is good. The ability of students that used trainer and jobsheet categorized good with the results of performance assessments of pre Amplifier reach 80%, tone control reach 82,5%, power Amplifier reach 77,5% and sound wave on decibel reach 85%. Students response of whole a spot in trainer media and jobsheet is positive response with average rating reach 91.4 % categorized excellent. This is showed that stereo Audio Amplifier trainer and jobsheet that produced is valid to use as learning media. Keywords : Stereo Audio Amplifier Trainer and Jobsheet, Learning media, Student’s respons
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pengembangan trainer dan jobsheet Audio Amplifier stereo pada standar kompetensi perekayasaan sistem Audio di smk negeri 3
Jurnal Pendidikan Teknik Elektro, 2015Co-Authors: Rizki Amirullah Azhar, Edy SulistiyoAbstract:Abstrak Penelitian ini bertujuan untuk menghasilkan media pembelajaran berupa trainer dan jobsheet Audio Amplifier stereo pada standar kompetensi perekayasaan sistem Audio di SMK Negeri 3 Jombang. Selain itu penelitian ini dilakukan untuk mengetahui kelayakan, kemampuan siswa dalam menggunakan media pembelajaran tersebut dan respon siswa. Metode yang digunakan adalah Research and Development (R&D) yang telah dibatasi menjadi 7 tahap saja yakni (1) potensi dan masalah, (2) pengumpulan data, (3) desain produk, (4) validasi desain, (5) revisi design, (6) uji coba produk, dan (7) analisa dan pelaporan. Pengumpulan data pada penelitian ini diperoleh dari hasil validasi untuk mengetahui kelayakan media yang dihasilkan, hasil penilaian kinerja praktikum siswa untuk mengetahui kemampuan siswa dalam menggunakan media trainer dan jobsheet , serta hasil respon siswa untuk mengetahui tanggapan siswa terhadap media trainer dan jobsheet yang dihasilkan. Berdasarkan hasil penelitian diperoleh kesimpulan bahwa, hasil validasi pada keseluruhan aspek yang terdapat di dalam media trainer dinyatakan baik dengan rata-rata hasil rating sebesar 81,19% dan rata-rata hasil rating validasi terhadap jobsheet sebesar 82,91% dinyatakan baik. Kemampuan siswa dalam menggunakan trainer dan jobsheet dikategorikan baik dengan hasil penilaian kinerja praktikum dari rangkaian penguat depan sebesar 80%, rangkaian pengatur nada sebesar 82,5%, rangkaian penguat daya sebesar77,5% dan gelombang suara dalam satuan decibel sebesar 85%. Respon siswa pada keseluruhan aspek yang terdapat dalam media trainer dan jobsheet mendapat respon positif dengan rata-rata hasil respon siswa sebesar 91.4% yang dikategorikan sangat baik. Hal ini menunjukkan bahwa trainer dan jobsheet Audio Amplifier stereo yang dihasilkan layak digunakan sebagai media pembelajaran. Kata Kunci : Trainer dan jobsheet Audio Amplifier stereo , Media pembelajaran, Respon siswa Abstract This research aims to produce a stereo Audio Amplifier trainer and jobsheet learning media on Audio system engineering in SMK Negeri 3 Jombang. This research also to determine the validity of the instrument, the student ability in using the learning media and student responses. That method used in this study is Research and Development (R&D) that has been limited into seven stages only (1) potential dan problem, (2) data collection, (3) product design, (4) design validation, (5) design revision, (6) field test, and (7) analysis and reporting. Data collection in this research was obtained from the results of validation to determine the validity of the media, the results of student performance assessments to determine students ability in using trainer and jobsheet , and the results of students response to determine students responses of trainer and jobsheet media has generated. Based on these research results it is concluded that, the whole validity result of trainer media is good with rating results average reach 81.19 % and the average validity result of jobsheet reach 82.91% is good. The ability of students that used trainer and jobsheet categorized good with the results of performance assessments of pre Amplifier reach 80%, tone control reach 82,5%, power Amplifier reach 77,5% and sound wave on decibel reach 85%. Students response of whole a spot in trainer media and jobsheet is positive response with average rating reach 91.4 % categorized excellent. This is showed that stereo Audio Amplifier trainer and jobsheet that produced is valid to use as learning media. Keywords : Stereo Audio Amplifier Trainer and Jobsheet , Learning media, Student’s response
Gyu-hyeong Cho - One of the best experts on this subject based on the ideXlab platform.
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A High-Performance Fast Switching Charge Dump Assisted Class- $K^{\ast}$ Audio Amplifier
IEEE Transactions on Circuits and Systems I: Regular Papers, 2010Co-Authors: Kwang-chan Lee, Chang-seok Chae, Jin-yong Jeon, Kang-ho Lee, Gyu-hyeong ChoAbstract:A new Class-K* Audio Amplifier with high-power efficiency and high fidelity is integrated in a 0.35-μm CMOS process. It proposes a new topology connected Class-D Amplifier with fast-switching charge-dump (FSCD) Amplifier in parallel. The integration of the Amplifier requires neither analog buffer Amplifier nor a complex compensation circuit needed in hybrid Audio Amplifier (Class-K). The FSCD Amplifier composed of comparators and switches works at a high-switching frequency in order to absorb the distortion caused by Class-D Amplifier switching. Thus, this assists the Audio Amplifier to have good linearity under switching operation. With the proposed topology, the Audio Amplifier has a flat frequency response with - 3-dB bandwidth of 60 KHz and is capable of delivering up to 257 mW into 4.1-Ω load with maximum efficiency of 81%. A typical total harmonic distortion plus noise (THD+N) is less than 0.1% at the power level over 25 mW within the Audio frequency range (20 Hz-20 kHz), and the minimum THD+N is 0.025% with the Audio input frequency of 1 kHz at the output power of 114 mW.
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Fast switching charge dump assisted Class-D Audio Amplifier with high fidelity and high efficiency
2008 IEEE Power Electronics Specialists Conference, 2008Co-Authors: Kwang-chan Lee, Chang-seok Chae, Kang-ho Lee, Gyu-hyeong ChoAbstract:A fast switching charge dump assisted class-D Audio Amplifier is presented in this paper. To achieve high efficiency and high linearity, the Class-K* Audio Amplifier consists of the class D Amplifier with high efficiency and the proposed charge dump Amplifier with high linearity. The charge pump Amplifier works at faster switching frequency than class D Amplifier so as to compensate the distortion caused by switching of the class-D Amplifier. The class-K* Audio Amplifier implemented in 0.35mum CMOS process shows -71.8 dB THD+N at 1 KHz and a maximum efficiency of 81% at an output power of 257 mW for 4.1Omega load.
Kwang-chan Lee - One of the best experts on this subject based on the ideXlab platform.
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A High-Performance Fast Switching Charge Dump Assisted Class- $K^{\ast}$ Audio Amplifier
IEEE Transactions on Circuits and Systems I: Regular Papers, 2010Co-Authors: Kwang-chan Lee, Chang-seok Chae, Jin-yong Jeon, Kang-ho Lee, Gyu-hyeong ChoAbstract:A new Class-K* Audio Amplifier with high-power efficiency and high fidelity is integrated in a 0.35-μm CMOS process. It proposes a new topology connected Class-D Amplifier with fast-switching charge-dump (FSCD) Amplifier in parallel. The integration of the Amplifier requires neither analog buffer Amplifier nor a complex compensation circuit needed in hybrid Audio Amplifier (Class-K). The FSCD Amplifier composed of comparators and switches works at a high-switching frequency in order to absorb the distortion caused by Class-D Amplifier switching. Thus, this assists the Audio Amplifier to have good linearity under switching operation. With the proposed topology, the Audio Amplifier has a flat frequency response with - 3-dB bandwidth of 60 KHz and is capable of delivering up to 257 mW into 4.1-Ω load with maximum efficiency of 81%. A typical total harmonic distortion plus noise (THD+N) is less than 0.1% at the power level over 25 mW within the Audio frequency range (20 Hz-20 kHz), and the minimum THD+N is 0.025% with the Audio input frequency of 1 kHz at the output power of 114 mW.
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Fast switching charge dump assisted Class-D Audio Amplifier with high fidelity and high efficiency
2008 IEEE Power Electronics Specialists Conference, 2008Co-Authors: Kwang-chan Lee, Chang-seok Chae, Kang-ho Lee, Gyu-hyeong ChoAbstract:A fast switching charge dump assisted class-D Audio Amplifier is presented in this paper. To achieve high efficiency and high linearity, the Class-K* Audio Amplifier consists of the class D Amplifier with high efficiency and the proposed charge dump Amplifier with high linearity. The charge pump Amplifier works at faster switching frequency than class D Amplifier so as to compensate the distortion caused by switching of the class-D Amplifier. The class-K* Audio Amplifier implemented in 0.35mum CMOS process shows -71.8 dB THD+N at 1 KHz and a maximum efficiency of 81% at an output power of 257 mW for 4.1Omega load.
A. Yoneya - One of the best experts on this subject based on the ideXlab platform.
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ISCAS - Pulse width and position modulation for fully digital Audio Amplifier
2008 IEEE International Symposium on Circuits and Systems, 2008Co-Authors: A. YoneyaAbstract:A modified pulse width modulation approach is proposed. The pulse position is modulated as well as the pulse width to have a higher resolution of the modulation. Employing a noise shaping filter with a state-space form utilizing the sliding mode scheme enables the proposed approach. The fully digital Audio Amplifier is selected as an application to realize a high resolution effectively.
Chang-seok Chae - One of the best experts on this subject based on the ideXlab platform.
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A High-Performance Fast Switching Charge Dump Assisted Class- $K^{\ast}$ Audio Amplifier
IEEE Transactions on Circuits and Systems I: Regular Papers, 2010Co-Authors: Kwang-chan Lee, Chang-seok Chae, Jin-yong Jeon, Kang-ho Lee, Gyu-hyeong ChoAbstract:A new Class-K* Audio Amplifier with high-power efficiency and high fidelity is integrated in a 0.35-μm CMOS process. It proposes a new topology connected Class-D Amplifier with fast-switching charge-dump (FSCD) Amplifier in parallel. The integration of the Amplifier requires neither analog buffer Amplifier nor a complex compensation circuit needed in hybrid Audio Amplifier (Class-K). The FSCD Amplifier composed of comparators and switches works at a high-switching frequency in order to absorb the distortion caused by Class-D Amplifier switching. Thus, this assists the Audio Amplifier to have good linearity under switching operation. With the proposed topology, the Audio Amplifier has a flat frequency response with - 3-dB bandwidth of 60 KHz and is capable of delivering up to 257 mW into 4.1-Ω load with maximum efficiency of 81%. A typical total harmonic distortion plus noise (THD+N) is less than 0.1% at the power level over 25 mW within the Audio frequency range (20 Hz-20 kHz), and the minimum THD+N is 0.025% with the Audio input frequency of 1 kHz at the output power of 114 mW.
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Fast switching charge dump assisted Class-D Audio Amplifier with high fidelity and high efficiency
2008 IEEE Power Electronics Specialists Conference, 2008Co-Authors: Kwang-chan Lee, Chang-seok Chae, Kang-ho Lee, Gyu-hyeong ChoAbstract:A fast switching charge dump assisted class-D Audio Amplifier is presented in this paper. To achieve high efficiency and high linearity, the Class-K* Audio Amplifier consists of the class D Amplifier with high efficiency and the proposed charge dump Amplifier with high linearity. The charge pump Amplifier works at faster switching frequency than class D Amplifier so as to compensate the distortion caused by switching of the class-D Amplifier. The class-K* Audio Amplifier implemented in 0.35mum CMOS process shows -71.8 dB THD+N at 1 KHz and a maximum efficiency of 81% at an output power of 257 mW for 4.1Omega load.
