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All Journal Techne : Jurnal Ilmiah Elektroteknika Jurnal Fisika : Fisika Sains dan Aplikasinya Al-Khidmah Jurnal Pengabdian Masyarakat
Warsito, Ali
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Religion Humanities Astronomy Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences

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PENENTUAN KOEFISIEN EKSTINGSI CLUSTER BINTANG IC 4665 MENGGUNAKAN METODE REGRESI LINEAR DENGAN PEMOGRAMAN PYTHON Warsito, Ali; Amaral, Furtuosa De Fatima; Mumpuni, Emanuel Sungging
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 10 No 1 (2025): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v10i1.20705

Abstract

Abstrak Penelitian ini mengamati cluster bintang IC 4665 yang dipilih karena dekat dengan Bumi, mudah diamati, memiliki populasi bintang yang banyak, dan usia yang relatif muda. Pengamatan dilakukan menggunakan teleskop dan kamera CCD pada berbagai filter. Proses pengolahan melibatkan pra- pemrosesan, reduksi gambar, dan analisis fotometri bukaan untuk mendapatkan nilai magnitudo instrumen. Persamaan transformasi magnitudo diperoleh melalui regresi linearsederhana menggunakan Excel dan Python. Hasil perhitungan koefisien ekstingsi adalah 0,478 (Excel) dan 0,478 (Python), menunjukkan nilai yang baik sesuai dengan kondisi langit minim polusi cahaya di Tilong, Nusa Tenggara Timur
Eksperimen dan Perannya dalam Pemahaman Konsep Fisika Imam Sutaji, Hadi; Warsito, Ali; Bernandus, Bernandus
Al-Khidmah Jurnal Pengabdian Masyarakat Vol. 5 No. 3 (2025): SEPTEMBER-DESEMBER
Publisher : Institute for Research and Community Service (LPPM) of the Islamic University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56013/jak.v5i3.4812

Abstract

In IPA learning, especially physics, in addition to understanding theoretical physics concepts, student involvement through direct experience in learning as an actualization of the knowledge learned is very necessary. This actualization is realized through experimental activities that are expected to help students understand physics concepts more easily, more quickly, and longer remember them so that students are motivated to study physics further. Physics experimental activities can be carried out at various levels of education units, from Elementary School (SD)/equivalent, Junior High School (SMP)/equivalent, and Senior High School (SMA)/equivalent. Especially for Senior High School (SMA), students already have the ability to think abstractly, logically, and critically so that direct experience in learning physics will help improve these abilities. One such experience is experimentation. The existence of experiments will present natural phenomena as characteristics of physics into something easy to understand so that it is not only theoretical in its delivery. In this Community Service Activity, experiments are presented in physics learning. The results of the activity evaluation gave a positive response to the implementation of the activity, where students felt helped to understand several physics concepts through the role of the experiments that have been carried out so that students have a sense of interest and motivation to study IPA, especially physics further.
Desain Voltage Controlled Current Source untuk Sistem Electrical Impedance Tomography Malelak, Naldo; Umbu, Ari Bangkit Sanjaya; Lapono, Laura A.S.; Warsito, Ali
Techné : Jurnal Ilmiah Elektroteknika Vol. 24 No. 2 (2025)
Publisher : Fakultas Teknik Elektronika dan Komputer Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31358/techne.v24i2.592

Abstract

Electrical Impedance Tomography (EIT) adalah salah satu teknik pencitraan yang didasarkan pada pemetaan sebaran konduktivitas listrik. Salah satu blok sistem EIT yang memiliki peran penting adalah Voltage Controlled Current Source (VCCS). VCCS berfungsi sebagai sumber arus AC konstan yang diinjeksikan pada objek pengukuran dengan dengan standar nilai kuat arus maksimum yang diinjeksikan sebesar 5 mA pada rentang frekuensi 50-250 KHz. Pada penelitian ini dibatasi sistem VCCS dengan keluaran arus AC konstan 1 mA pada frekuensi tunggal 60 KHz. Sistem VCCS terdiri dari rangkaian Voltage-Controlled Oscillator (VCO) menggunakan IC ICL8038, rangkaian Butterworth Low-Pass Filter (LPF) (topologi Sallen-Key) menggunakan IC LF412 dan rangkaian Voltage-To-Current-Converter (VCC) (rangkaian Enhance Howland Current Pump) menggunakan IC AD844. Hasil sistem VCCS dapat memberi keluaran arus AC konstan 0,96 mA untuk beban maksimal mencapai 3730 Ohm. Hasil penelitian ini dapat digunakan sebagai sumber arus konstan untuk EIT dengan sistem frekuensi tunggal.
Co-Authors Amaral, Furtuosa De Fatima Ari Bangkit Sanjaya Umbu Bernandus, Bernandus Imam Sutaji, Hadi Lapono, Laura A.S. Malelak, Naldo Mumpuni, Emanuel Sungging