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Widianingsih, Betti
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Kontrol Kecepatan Berbasis PWM (Pulse Width Modulation) Untuk Mesin Pemarut Kelapa Bertenaga Surya Fadhillah Hazrina; Prima Dewi, Riyani; Widianingsih, Betti; Sari, Laura; Zulfahmi Muassar, Mifta
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2794

Abstract

Solar energy is a new renewable energy (EBT) that can be used as an alternative energy source for electricity generation to replace fossil fuels or supplies from the National Electricity Company (PLN). One of its uses can be applied in everyday life in household appliances, namely, coconut grater machines. Coconut grater machines used in the market still use fossil fuels to crush coconut meat, so solar energy is implemented as an alternative energy to operate the coconut grater machine. The use of solar panels in this study is highly dependent on sunlight exposure. In addition, the tilt position of the solar panel can also determine the power generated by the solar panel. The tilt position of the solar panel can be manually adjusted according to the direction of sunlight at certain times. Around midday, sunlight can be captured optimally. At that time, the accumulator/battery will quickly charge, and the coconut grater machine can be used at low or high speeds. The purpose of this study is to implement a PWM (Pulse Width Modulation) system-based control as a motor speed regulator on a coconut grater machine. PWM technology is installed to obtain optimal rotation results and has the potential to save electrical energy. The research results showed that the installed solar panels could produce an average of 4.86 watts of electrical power at 8:00 a.m. WIB and a maximum of 5 watts of electrical power at 12:00 p.m. WIB. Under no-load operating conditions, the current was 0.38 A and the motor speed was 3,724 Rpm. When the engine was tested under load, the speed was 2,926 Rpm.
TEKNOLOGI TEPAT GUNA BERBASIS ENERGI SURYA SEBAGAI INOVASI PENINGKATAN POTENSI DESA WISATA: APPROPRIATE TECHNOLOGY BASED ON SOLAR ENERGY AS AN INNOVATION TO ENHANCE THE POTENTIAL OF TOURISM VILLAGES Ilahi, Novita Asma; Purnata, Hendi; Rahmat, Saepul; Widianingsih, Betti; Karyani, Uli
Jurnal Berdaya Mandiri Vol. 5 No. 1 (2023): JURNAL BERDAYA MANDIRI (JBM)
Publisher : Universitas PGRI Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31316/jbm.v5i1.4185

Abstract

Widarapayung Wetan is one of the innovation villages in Cilacap Regency with the method of developing a one-stop destination tourist area. The development of tourist areas certainly attracts visitors and the public to be able to gather and have activities at the same location. This innovation certainly requires various facilities and infrastructure to support development. To support the government's program in developing the use of new and renewable energy and developing an innovation village in the village of Widarapayung Wetan, an infrastructure to support visitor facilities was made in the one-stop destination tourist area of ​​Widarapayung Wetan Village. The Solar Electric Device Charging Station (S – EDCS) uses solar system technology so that it will not burden the use of PLN's electrical energy. The use of solar energy also provides knowledge for the surrounding community to be able to innovate to develop electricity needs using the S – EDCS tool which is implemented in the village of Widarapayung Wetan. The installation of S – EDCS is a Social Innovation for the community that has not existed before in Widarapayung Wetan Village.
Assessing Cilacap State Polytechnic Students' Ability to Conduct English Proficiency Test: Challenges and Strategies Widianingsih, Betti; Vikasari, Cahya; Hazrina, Fadhillah; Prabowo, Annas Setiawan
JADEs Journal of Academia in English Education Vol 6 No 1 (2025): JADEs Journal of Academia in English Education
Publisher : Tadris Pendidikan Bahasa Inggris IAIN Langsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32505/jades.v6i1.11456

Abstract

The purpose of this study was to evaluate Cilacap State Polytechnic students' readiness for the EPT-P and determine the obstacles they encounter as well as the strategies they employ to pass the test. This research used a mixed-methods case study design. To collect data, it used test and questionnaires which refer to the theory of Self-Regulated Learning, Test Taking Strategy, TAM and study of interlanguage. Analysis was based on Likert scale responses. It involved 60 final-year students of Cilacap State Polytechnic in the academic year of 2021/2022 from different study programmes. The study found that students at the State Polytechnic of Cilacap had a general lack of English competence, with just 25 out of 60 (41%) scoring over the 400 EPT-P pass score. Key issues were linguistic difficulties 37 students (62%) struggled with long reading texts, 41 (68%) struggled with essay writing, and 40 (67%) had difficulty listening, with 17 (28%) strongly agreeing. Psychological challenges were particularly significant: 28 students (47%) reported anxiety, while 44 (73%) reported losing focus. Technological and resource challenges were prominent, with 40 students (67%) lacking preparation materials and 55 (92%) never having had official instruction. Furthermore, 33 students (55%) considered the listening equipment unclear, and 54 (90%) thought the test was overpriced. Only 16 students (27%) prepared mentally and physically, while only 9 (15%) took classes. These findings, which were backed by many language learning and educational theories, emphasise the importance of economical training, easily accessible materials, and personalised coaching in improving student performance.
Co-Authors Affandi, Lukman Alimudin, Erna Annas Setiawan Prabowo Annisa Romadloni Baso Intang Sappaile, Baso Intang Batilmurik, Ridolof Cahya Vikasari Cahya Vikasari, Cahya Darussalam, Andi Zulfikar Fadhillah Hazrina Fredrik Warwer Guilin, Xie Hazrina, Fadhillah Hendi Purnata Hera Susanti, Hera Isa Bahroni, Isa Jiao, Deng Karyani, Uli Kirom, Ahmad Kuswinardi, Jacobus Wiwin Lutfi Syafirullah Manuhutu, Abraham Muhammad Yusuf Novita Asma Ilahi Prabowo, Anas Setiawan Prasetia, Vicky Prima Dewi, Riyani Riyani Prima Dewi Saepul Rahmat, Saepul Sari Widya Utami Sari, Laura Sumardiono, Arif Tarigan, Roy Aries Permana Wahyu Nugroho Walenta, Abdi Sakti Yana, Medi Yuanyuan Wang, Yuanyuan Zulfahmi Muassar, Mifta