Article Per Year (5 Year)
p-Index From 2020 - 2025
6.07
P-Index
This Author published in this journals
All Journal POSITRON Jurnal Neutrino : jurnal fisika dan aplikasinya Bulletin of Electrical Engineering and Informatics Jurnal Spektra JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Unnes Science Education Journal JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Spektra: Jurnal Fisika dan Aplikasinya JURNAL METEOROLOGI DAN GEOFISIKA Sarwahita : Jurnal Pengabdian Kepada Masyarakat Risenologi Parameter PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Mitra Teras: Jurnal Terapan Pengabdian Masyarakat
Widyaningrum Indrasari
Department Of Physics, Faculty Of Mathematics And Natural Sciences, Universitas Negeri Jakarta, Jakarta 13220
Aerospace Engineering Humanities Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

Published : 57 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 57 Documents
Search

 1   2   3   4   5 
Pembuatan prototipe sensor potensial listrik sebagai perangkat penunjang pada Receiver Controlled Source Electromagnetic Indrasari, Widyaningrum; U, Umiatin; Djamal, Mitra; Trihatmoko, Danang
Jurnal Spektra Vol 11, No 1 (2011): Spektra: Jurnal Fisika dan Aplikasinya
Publisher : Jurnal Spektra

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Telah dilakukan pembuatan dan karakterisasi prototype sensor potensial listrik. Berdasarkan kalibrasi sensor potensial listrik X  terhadap kalibrator kesalahan absolut maksimum dan kesalahan relatif maksimum pada kenaikkan tegangan input kalibrator masing-masing yaitu mencapai 0,013 V - 0,0288V dan 0,21% - 0,41% pada daerah kerja 0,041V-0,05V. Kesalahan absolut maksimum dan  kesalahan relatif maksimum dengan penurunan tegangan input kalibrator masing-masing yaitu mencapai 0,011V-0,034V dan 0,025% - 0,034% pada daerah kerja 0,035V - 0,049V. Sensor potensial listrik yang diperoleh pada penelitian ini memenuhi syarat untuk  digunakan sebagai perangkat penunjang receiver Controlled Source Electromagnetic (CSEM). Kata kunci: Sensor potensial listrik, kalibrasi, CSEM, receiver.
PEMBUATAN DAN KARAKTERISASI DATA LOGGER PADA SISTEM DETEKSI PERANGKAT ELEKTROMAGNETIK INDUKSI Indrasari, Widyaningrum; Nanda, Rahmondia; Djamal, Mitra
Jurnal Spektra Vol 16, No 1 (2015): Spektra: Jurnal Fisika dan Aplikasinya
Publisher : Jurnal Spektra

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

AbstrakTelah dilakukan pembuatan dan karakterisasi data logger sebagai perangkat akuisisi data digital pada sistem deteksi elektromagnetik induksi. Perangkat dibangun menggunakan ADC (Analog to Digital Converter) 16-bit dengan kecepatan 500 kilo samples per second (ksps). Untuk mengendalikan kerja ADC digunakan prosesor jenis mikrokontroler ATmega64A, sementara sebagai rangkaian pendukung kerja sistem digunakan multiplekser, rangkaian penguat, filter aktif lolos rendah Sallen Key tipe Butterworth, dan program antar muka. Sistem akuisisi data yang dibangun dapat merekam sinyal dengan frekuensi maksimum 10 kHz dari empat saluran masukan (channel). Rentang tegangan yang digunakan adalah ±2,5 Volt dengan resolusi ADC 76 µV, dan dapat mengakuisisi data setiap 2 µs. Hasil karakterisasi menggunakan input tegangan DC dari kalibrator diperoleh kurva keluaran ADC masing-masing channel mempunyai persamaan yang cukup identik dengan gradien sebesar 0,90. Sedangkan hasil karakteristik ADC terhadap sumber tegangan AC dari sensor magnetik fluxgate, menunjukkan adanya distorsi pada sinyal dengan frekuensi > 6 kHz.AbstractIt has been made and characterized data logger as a digital data acquisition devices on the electromagnetic induction detection system. This device was built using the ADC (Analog to Digital Converter) of 16-bit with the speed of 500 kilo samples per second (KSPS). The processors of microcontroller ATmega64A used as a controller of ADCs working. Several electronics circuits was used as a working supporting system, there are a multiplexer circuit, an amplifier circuit, an active low pass filter (Sallen-Key filter type Butterworth), and the interface program. Data acquisition system consists of four channels which is able to record the signal with a maximum frequency of 10 kHz. The working voltage range used is ± 2.5 Volts, with ADCs resolution of 76 μV, and able to obtain data every 2 μs. The characterization result of ADCs output using a DC voltage input from the calibrator, obtained that ADC output curve of each channel identical equation with a gradient of 0.90. Meanwhile the characterization result of ADCs output using the AC voltage source of fluxgate magnetic sensors, showed a distortion in a signal with a frequency > 6 kHz .Keywords: electromagnetic induction, data logger, ADC, resolution, fluxgate
THE EFFECT OF SETS LEARNING MODEL AND SCIENTIFIC ATTITUDE TOWARD STUDENT’S PHYSICS ACHIEVEMENT Amelia, Riski; Supriyati, Yetti; Indrasari, Widyaningrum
Unnes Science Education Journal Vol 8 No 3 (2019): December 2019
Publisher : Department of Integrated Science, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang in Collaboration with Perkumpulan Pendidikan IPA Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this study is determine the effect of science, environment, technology, and society (SETS) learning model and scientific attitude toward student’s physics achievement in XI grade student. This study was conducted at SMAN 2 Indramayu. This study used quasi experiment method with Two Way Anova design. There are 64 students as the sample and it was selected by purposive sampling. Students in experimental group learned through Science, Environment, Technology, and Society. Meanwhile, in control group, students learned through Inquiry Learning. The result of this study are: the student’s achievement given by Science, Environment, Technology and Society is higher than Inquiry; there is influence of interaction between learning models and scientific attitude toward student’s achievement; student’s achievement given by Science, Environment, Technology, and Society is higher than Inquiry in group of student’s with high scientific attitude; and student’s achievement given by Science, Environment, Technology, and Society is lower than Inquiry in group of student’s who have low scientific attitude.
Pengembangan Media Pembelajaran Fisika Menggunakan Lectora Inspire pada Materi Usaha dan Energi SMA Inggrid Ayu Putri; Siswoyo Siswoyo; Widyaningrum Indrasari
Jurnal Penelitian & Pengembangan Pendidikan Fisika Vol 2 No 2 (2016): JPPPF - Jurnal Penelitian & Pengembangan Pendidikan Fisika, Volume 2 Nomor 2, Des
Publisher : Program Studi Pendidikan Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1025.558 KB) | DOI: 10.21009/1.02210

Abstract

Abstract The development of instructional media aims to help students to do independent learning outside the classroom but still under the supervision of teachers. This study uses Research and Development (R & D) DDD-E type developed by Ivers and Barron. The steps of DDD-E developing method method consist of Decide, Design, Develop, and Evaluate. Decide is determination of the project objectives, design determines the structure of the media contents to be developed, develop step is developing a media that is already planned. The evaluation exist on DDD steps, so the instructional media can be controlled. The software used in this research is Lectora Inspire. Lectora Inspire used on this research because the software user friendly or easy to use. Keywords: Lectora Inspire, media, work, energy Abstrak Pengembangan media pembelajaran ini bertujuan untuk membantu siswa dalam melakukan pembelajaran mandiri diluar kelas tetapi masih dalam pengawasan guru. Penelitian ini menggunakan metode penelitian dan pengembangan atau Research and Development (R&D) tipe DDD-E yang dikembangkan oleh Ivers dan Barron. Langkah – langkah metode pengembangan DDD-E terdiri dari tahap decide, yaitu penentuan tujuan proyek, design, yaitu menentukan struktur isi dari media yang akan dikembangkan, develop adalah tahap untuk mengembangkan media pembelajaran yang sudah direncanakan. Tahap Evaluate adalah tahap evaluasi pengembangan media, dimana langkah ini terdapat pada seluruh tahapan DDD. Perangkat lunak yang digunakan adalah Lectora Inspire. Software ini dipilih karena langkah penggunaan yang user friendly atau mudah digunakan. Kata-kata kunci:Lectora Inspire, media, usaha, energi
The Validity of Student Worksheet Using Inquiry-Based Learning Model with Science Process Skill Approach for Physics Learning of High School Yulkifli Yulkifli; Melia Vivi Ningrum; Widyaningrum Indrasari
Jurnal Penelitian & Pengembangan Pendidikan Fisika Vol 5 No 2 (2019): JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika), Volume 5 Issue 2, D
Publisher : Program Studi Pendidikan Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.749 KB) | DOI: 10.21009/1.05210

Abstract

The significant influence of the 21st century brought a change in Physics learning. Students are required to have the skills to think, work, and live in the surrounding environment. To achieve 21st-century skills needed teaching materials that can support the learning process.With the presence of teaching materials, students are more active in building their knowledge and easy to understand the material provided. Teaching materials that can guide students with a productive task to practice is the student worksheet. A student worksheet is a teaching material that contains a set of activities to maximize students understanding in achievement of competence. To improve the competence of students, one of the efforts that teachers to develop quality student worksheet. A student worksheet is considered qualified if has validity criteria. The validity assessment of the student worksheet is carried out by expert reviews. This research aims to determine the validity of the student worksheet using an inquiry-based learning model with a science process skills approach. The research conducted is design research using the Plomp model with the type of development studies, where validity is at the stage of development. The research instrument used a validity questionnaire to be filled by expert reviews, then analyzed using Aiken's V formula. The result of the validity showed that the student worksheet using an inquiry-based learning model with a science process skills approach having valid criteria with a value of 0.88. It means that the student worksheet is decent for use in Physics learning.
KARAKTERISASI SENSOR PHOTODIODA, DS18B20, DAN KONDUKTIVITAS PADA RANCANG BANGUN SISTEM DETEKSI KEKERUHAN DAN JUMLAH ZAT PADAT TERLARUT DALAM AIR Zulfiah Ayu Kurnia Sari; Handjoko Permana; Widyaningrum Indrasari
Spektra: Jurnal Fisika dan Aplikasinya Vol 2 No 2 (2017): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 2 Nomor 2, Agustus 2017
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (762.775 KB) | DOI: 10.21009/SPEKTRA.022.09

Abstract

Abstract Drinking water worth consumption are those that should be odorless, tasteless, clean, the temperatures preferably below air temperature, and low amounts of dissolved solids. On this turbidity and total dissolved solid water system is required some sensor devices. The accuracy of the sensor is an important thing to support the effectiveness of the system. In this research, the calibration of ds18b20 sensor as temperature detector, photodiode sensor as turbidity detector, and conductivity sensor as a detector of dissolved solid (TDS) in water and using Arduino as a microcontroller. The characterization is done by comparing the sensor output with laboratory test equipment. The result of characterization means that each measurement sensor has a variation error that is photodiode sensor with relative error 3.13%, sensor ds18b20 1.77%, and conductivity sensor 2.42%. Keywords: temperature, turbidity, TDS, Arduino.
SPECTROSCOPIC AND RADIATIVE PROPERTIES OF SM3+ DOPED SODIUM-LEAD-ZINC-LITHIUM-BORATE GLASSES Donna Rajagukguk; Juniastel Rajagukguk; Pintor Simamora; Rappel Situmorang; Chayani Sarumaha; Widyaningrum Indrasari
Spektra: Jurnal Fisika dan Aplikasinya Vol 6 No 3 (2021): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 6 Issue 3, December 2021
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.063.01

Abstract

The glasses with a composition of (65 - x) B2O3 – 5ZnO – 5Li2O – 15 Na2O – 10PbO – x Sm2O3 (x = 0.0; 0.05; 0.1; 0.5; 1.0; 2.0 and 4.0 mol.%) which has been prepared using the melt quenching technique (1100oC for 3 hour). The spectroscopic properties can be determined by investigating the absorption, excitation, and emission spectra of a glass sample. There are 14 centered absorption bands starting from 6H5/2. The excitation spectrum of the Sm3+ doped borate glasses was measured at the wavelength of 300-550 nm which is the strongest intensity (4F7/2 at 403 nm) used as the excitation wavelength to measure the glass emission spectrum. The emission peaks transition starts from 4G5/2. The Judd-Ofelt theory has been applied to the absorption spectrum of Sm3+ doped borate glass to estimate the intensity parameters (Ωλ, λ = 2, 4 and 6) which are then used to calculate the radiative properties. The energy of the optical bandgap is in the range 3.85-3.77 eV for direct transitions and 3.42 - 4.22 eV for indirect transitions. The decay times obtained were 3.42, 3.99, 3.98, 2.96, 1.67, 1.48 ms for 0.05 - 4.00 mol%. Using the CIE chromaticity diagram for borate glass it can be determined that the glass from this work has a high performance for use as an orange emitting material application.
DESAIN DAN PEMBUATAN ALAT UKUR GEOFISIKA BERBASIS SENSOR FLUXGATE DAN SENSOR MEDAN LISTRIK I Made Astra; Widyaningrum Indrasari; Umiatin Umiatin; Mitra Djamal
Jurnal Meteorologi dan Geofisika Vol 12, No 3 (2011)
Publisher : Pusat Penelitian dan Pengembangan BMKG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/jmg.v12i3.107

Abstract

Telah dilakukan pembuatan alat dengan menggunakan metoda "EM survei geofisika" dalam bentuk sensor fluxgate, sensor potensial listrik, dan unit injector flow. Elemen sensor "fluxgate" dibentuk dengan menggunakan kumparan sekunder ganda. konfigurasi elemen sensor "fluxgate" terdiri dari variasi lilitan primer 4 x 40 dan lilitan sekunder 2 x 60. Kumparan primer akan membangkitkan sebuah medan magnet internal yang berfungsi sebagai medan magnet acuan ketika kumparan sekunder digunakan untuk mengukur medan magnet eksternal (mendeteksi) sehingga sensitivitas sensor fluxgate ditentukan dengan bentuk kumparan sekunder. Berdasarkan analisa data, diperoleh sensitivitas sebesar 283.02 mV/mT dan dapat mendeteksi medan magnet hingga 3:53 nT. Sebuah sensor potensial listrik memiliki rentang pengukuran  yang diperoleh dari masukkan sensor sebesar 0-13 mV dan menghasilkan tegangan keluaran 0-5 volt. Ketika keluaran dari IGBT yang berfungsi sebagai saklar dan belum diatur menggunakan  unit antarmuka, dapat menghasilkan 50% siklus sinyal yang cukup baik, sehingga masih diperlukan perbaikan pada unit interface circuit flow transmitter. The research done supporting the manufacture of devices based on the method of EM geophysical survey in the form of fluxgate magnetic sensors, electric potential sensors, and interface unit injector flow. Fluxgate sensor element designed using a secondary coil (pick-up) double. The composition of fluxgate sensor element consists of two primary coils (excitation coil(4x40), two secondary coils (2x60). Primary coil will generate an internal magnetic field that serves as a reference magnetic field while the secondary coil serves to measure the external magnetic field (sensing) so that the sensitivity of fluxgate sensor is determined by the secondary coil design. Based on analysis of data obtained sensitivity 283.02 mV/mT, and can detect magnetic fields up to 3:53 nT. An electric potential sensor have a range of measurements obtained by sensor inputs 0-13 mV and produces a voltage output 0-5 volts. While the output of the IGBT which functions as a switch and have not be set using the interface unit can generate 50% duty cycle signal that is good enough, so it is still need for improvement in the unit interface circuit flow transmitter.
KALIBRASI SENSOR ULTRASONIK HC-SR04 SEBAGAI SENSOR PENDETEKSI JARAK PADA PROTOTIPE SISTEM PERINGATAN DINI BENCANA BANJIR Martalia Andayani; Widyaningrum Indrasari; Bambang. H. Iswanto
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.412 KB) | DOI: 10.21009/0305020109

Abstract

The water level detection sensor is a major component on flood early warning system. HC-SR04 Ultrasonic Sensor is usually used as a proximity sensor in a flood early warning system. The accuracy of the sensor is essential to support the effectiveness of a system. In this research, the calibration of HC-SR04 ultrasonic sensor using arduino microcontroller, which is it will be used on the prototype early warning system for floods. Calibration is done by taking reference to the warning status I, II, III, and IV of the Katulampa dam. The results showed that both sensor calibration can work well in the range of 14-250 cm, with a maximum relative error of 4.3%. The smallest change in distance that can be detected by the sensor by 1 cm with a maximum relative error of 0.91%. With the errors obtained, it can be said that the sensor is fit as a detector of the water level in flood early warning system prototype in 1:5 scale. Keywords: Ultrasonic Sensor, Arduino, Warning Status.
KARAKTERISASI SENSOR HALL EFFECT SEBAGAI SENSOR MAGNETIK PADA PROTOTIPE PENJELAJAH PENGUKUR MEDAN MAGNET DENGAN SISTEM KENDALI ANDROID Nadya Hidayatie; Widyaningrum Indrasari; Umiatin Umiatin
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.528 KB) | DOI: 10.21009/03.SNF2017.02.CIP.06

Abstract

The prototype explorer is a device that can work measuring the magnetic field of the magnetic material that spread at desired location. The main component of the prototype is the Hall Effect UGN3503 magnetic sensor. Characterization of magnetic sensor has been performed by using coil calibration and Gaussmeter type IDR-325. From the characterization known the result that the value of sensitivity the sensor equal to 595 G/V with relative error 2,55 %. The sensor can work effectively to detect a weak magnetic field of 0,1068 G at a distance of 5 cm. Keywords: Hall Effect, Robot Explorer, Android Application
Co-Authors A. Handjoko Permana Achmad Fadhlih Saldy Saputra Achmad Samsudin Achmadi, Ridho Adindya Giovanni Afifah Trie Lestari Agus Setyo Budi Ahmad Aminudin Ahmad Zatnika Purwalaksana Aisah Anggiyansah Sitompul Ariyanti, Shallu Fidhah Axel Nathanael Bahagia, Marthin Virgo Bambang Heru Iswanto Bambang. H. Iswanto Budi Mulyanti Cecep E. Rustana Cecep E.Rustana Chayani Sarumaha Dadan Sumardani Danang Trihatmoko, Danang Desriyan Lestari Dewanti, Kunti Dewi Muliyati Dias Prima Fadilla Dila Sabila Dina Ramadhini Rinaldy Donna Rajagukguk Eka Pawinanto, Roer Erfan Handoko Esmar Budi Esmar Budi Esmar Budi Esmar Budi Fadilla, Dias Prima Fathul Arifin Fauzi Bakri Febrianti, Yana Feby Dwitri Putri Ferdy Alfian Indra Prasetya Fitri Sakinah Ghina Muqita, Saffanah Habiburosid Hadi Nasbey Halimah, Nova Nur Hani Harjayanti Hani Harjayanti Hansel Muhammad Falah Haris Suhendar Heri Firmansyah Heri Firmansyah Heri Firmasyah Hermanta, Catur Anthony Hersaputra, Nugraha I Made Astra Ida Hamidah Iip Wahyuni Inggrid Ayu Putri Isnaini, I Gusti Ayu Jumril Yunas, Jumril Juniastel Rajagukguk Khan, Shak Rhuk Lee, Chang-Wook Leni Andayani Lestari, Intan Rachmawati Lilik Hasanah Lutvi Vitria Kadarwati Mangasi Alion Marpaung Martalia Andayani Melia Vivi Ningrum Mimin Iryanti Mitra Djamal Mitra Djamal Muqita, Saffanah Ghina Muthiah, Alya Nadya Hidayatie Novita Fitriani Nurul Fitri, An Nisa Nuvus, Afiva Riyatun Pintor Simamora Putri, Feby Dwitri Rahmondia N. Setiadi Rahmondia Nanda Rahmondia Nanda Rahmondia Nanda Setiadi Rama, Gusti Ramadhani, I Gusti Ayu Isnaini Fatha Ramayanti, Suci Ramdhan, Muhammad Rofiid Rappel Situmorang RATNA KOMALA DEWI Rifqi Md Zain, Ahmad Risanti, Risanti Riser Fahdiran Riski Amelia, Riski Sabila, Dila Sahari, Siti Kudnie Saldy Saputra, Achmad Fadhlih Setyo Nugroho, Harbi Shak Rhuk Khan Siswoyo Siswoyo SUBEKTI, FAJAR Sugandi, Gandi Supriyadi, Rizky Tsaniya Mukarromah Umiatin, Umiatin Valendio Febriano Wahyu Dwi Meilianto Wahyuni, Iip Wisnu Satria Budi Wulandari, Chandra Yetti Supriyati, Yetti Yolanda Natasya Mega Stella Yulkifli Yulkifli Zannuraini Zannuraini Zulfiah Ayu Kurnia Sari Zulfikar Zulfikar Zulmi, Febrian