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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) JSW (Jurnal Sosiologi Walisongo) Jurnal Neo Societal Scholaria: Jurnal Pendidikan dan Kebudayaan Techne : Jurnal Ilmiah Elektroteknika Jurnal Sistem Cerdas Jurnal Mantik Journal of Data Science and Its Applications Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Nasional Teknik Elektro dan Teknologi Informasi Jurnal Elektronika dan Telekomunikasi
Atyanta Nika Rumaksari
Universitas Kristen Satya Wacana
Arts Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences Other

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Perancangan Sistem Pencatat Kehadiran Jemaat berbasis IoT Untuk Meningkatkan Pembinaan Jemaat di GKJ Harjosari Karanganyar Kusuma Wardana, Hartanto; Rumaksari, Atyanta Nika; Meganathan, Hizkia Christian
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 5 No. 1 (2024): Jurnal Pengabdian kepada Masyarakat Nusantara (JPkMN)
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v5i1.2772

Abstract

Penggunaan teknologi informasi dan IoT menjadi sangat penting dalam Revolusi Industri 4.0. dan Society 5.0 Teknologi ini tidak lagi digunakan hanya pada industri, tetapi juga sudah merambah di bidang-bidang lain bahkan dikehidupan sosial. Oleh karena itu, PKM yang dilakukan oleh Fakultas Teknik Elektronika dan Komputer (FTEK) UKSW bertujuan untuk membantu masyarakat Gereja Kristen Jawa (GKJ) jemaat Harjosari dengan mengadopsi dan menerapkan teknologi ini. Metode pelaksanaan PKM ini adalah merancang teknologi yang digunakan menggantikan metode pencatatan kehadiran yang dilakukan secara manual. Kerjasama ini dilakukan karena pihak GKJ belum memiliki SDM yang bisa merealisasikan alat yang dibutuhkan, sehingga institusi Pendidikan seperti FTEK yang memiliki kemampuan merealisasikan teknologi yang dibutuhkan, dapat berpartisipasi dalam memecahkan masalah ini. Hasil yang dicapai setelah dilakukan realisasi kegiatan PKM adalah Gereja dapat mencatat berapa jumlah jemaat pria, wanita dan anak yang hadir dalam ibadah minggu. Selanjutnya, setelah jemaat yang hadir aktif mencatatkan kehadirannya melalui alat ini, kemudian data hasil dari pencatatan  ini akan diunggah ke Cloud berbasis Google-Spreadsheet untuk disimpan dan kemudian akan digunakan oleh pengelola Gereja sebagai data statistik kehadiran warga.
Power Regulator Design Using LM317 for Precise and Efficient Power Management Budihardja Murtianta; Atyanta Nika Rumaksari
Jurnal Elektronika dan Telekomunikasi Vol. 24 No. 2 (2024)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jet.632

Abstract

The Indonesian government plans to transition its transportation sector to electric vehicles (EVs) by 2025. Achieving this ambitious target will necessitate advancements in power management technologies. Therefore, the government is boosting research on energy efficiency, cutting power dissipation, and enhancing the reliability and lifespan of EV components. This study focuses on designing a power-efficient linear voltage regulator using the LM317, which is essential for EV power management. The regulator employs a voltage comparator to monitor feedback voltage and select the correct input voltage, ensuring efficient and stable output power. We tested the LM317 against the LM338 and LM350 in various setups. The results showed that the LM317 performed better in terms of voltage precision, efficiency, power dissipation, and temperature stability. Moreover, the LM317 achieved 75% efficiency in single-source setups and 85% in multi-source configurations, with a voltage precision of ±0.1%. The system’s ability to dynamically select input sources ensures optimal performance for small-signal EV applications.
Class-G series audio power amplifier for subwoofer Budihardja Murtianta; Darmawan Utomo; Atyanta Nika Rumaksari; Jae-Wook Lee
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 22, No 5: October 2024
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v22i5.25900

Abstract

An audio power amplifier is an electronic device used to amplify a small signal source power at the input into a large signal power at the output that is speaker. In general, audio power amplifiers use class-AB amplifiers. In the process of amplifying the signal power, there will be power losses in the amplifiers which results in relatively lower amplifier power efficiency because there is a difference between the supply and output voltage levels. In this paper a class-G series audio power amplifier for subwoofers is designed to minimize these power losses and increase the power efficiency of the amplifier. The designed amplifier voltage supply is 40 V with a maximum output power of 80 W at an 8 Ω load. The amplifier has frequency response from 20–200 Hz and gain twice. Realization of the power amplifier and measurements were carried out using the circuit maker simulator, and the measurement results of the class-G power amplifier were compared with the class-AB power amplifier. The measurement results show that both power amplifiers meet the design specifications. The proposed class-G amplifier has 0.14% larger total harmonic distortion (THD) but has 10.4% greater power efficiency advantages over the class-AB amplifier.
Co-Authors Adhi Dharma Wibawa Adri Gabriel Sooai Adri Sooai Budihardja Murtianta Darmawan Utomo Fanani, Nurul Zainal Gloria Song Abimanyu Gunawan Dewantoro Hartanto Kusuma Wardana Jae-Wook Lee Kevin Khamid Khamid Khamid Khamid King Harold Recto Lukas Bambang Setyawan Mauridhi Hery Purnomo Meganathan, Hizkia Christian Nasution, Ali Napiah Nurul Zainal Fanani Prischa Wilhelmina Picanussa Putri Hergianasari Risal, Semuel Rizki Amalia Yanuartha Surya Sumpeno