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All Journal Journal of Electrical Technology UMY Kontribusia : Research Dissemination for Community Development Madaniya Prosiding Seminar Nasional Program Pengabdian Masyarakat
Kunnu Purwanto
Universitas Muhammadiyah Yogyakarta
Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Medicine & Pharmacology Public Health Social Sciences

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Design of pH Monitoring System for Koi Pond Tony Khristanto Hariadi; Tajus Salatin; Kunnu Purwanto; Nafi Ananda Utama
Kontribusia : Research Dissemination for Community Development Vol 6 No 1 (2023): Kontribusia Januari 2023
Publisher : OJS Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/kontribusia.v6i1.4634

Abstract

Koi fish farming has increased significantly and become a promising profession in Bantul, however the farmer faced many challenges to produce good Koi fish. Koi fish productivity affected by water quality as a result of good water treatment and filtering. pH is one of the main indicators for good water quality in Koi farming, whilst not many Koi farmer can afford to buy adequate equipment for their ponds. The purpose of this Community Service Program was to help and empower the community in increasing the koi fish farming productivity. The target group of this project was either groups or persons running micro-enterprises in Koi farming. The specific target of this project is to be able to provide and apply appropriate technology to the community. pH monitoring system was designed to provide cheap and appropriate tools applicable and available in the community. By making the design available for replication, the community can work together to procure goods/systems independently. Therefore, the system designed will not burden the community individually. The targeted koi fish farmers are expected to be role models for other farmers. The results of the manufacture of this precise technology-based tool have been completed with the results of the pH meter monitoring accuracy was higher than 98%.
Electrical Design of a Portable Pure Sine Wave Inverter Using Ferrite Core Transformer and Double Stage Technique Kunnu Purwanto; Aditya Agus Wijayanto; Yudhi Ardiyanto; Karisma Trinanda Putra
Journal of Electrical Technology UMY Vol 7, No 1 (2023): June
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jet.v7i1.17912

Abstract

The size of the iron core transformer in an inverter is large and heavy because it has more conductor turns and works at low frequencies. In contrast, ferrite core transformers are designed to work at high frequencies, so the number of turns of the conductor is less, and the transformer size is relatively small and light. Device portability is a significant challenge in designing high-power inverters. This research uses a ferrite core transformer to design a portable pure sine wave inverter. A two-stage technique is proposed in designing the inverter so that the dc-link voltage and capacitor size can be flexibly selected, and the device size can be compacted. The design consists of two stages. First, a circuit to generate a 400-Volt DC voltage is designed using IC SG3525, a MOSFET power amplifier, and a ferrite core step-up transformer. Second, a pure sine wave generator circuit is constructed using an EGS002 module, MOSFETs, and a filter circuit. Experiments are performed by measuring the output voltage, monitoring power and frequency, and observing the waveform with an oscilloscope. The results reveal that the designed inverter can generate a 220-volt pure sine wave output, a maximum power of 500 Watts, a frequency of 50 Hz, and an efficiency between 91.4% to 98.1%.
Co-Authors Aditya Agus Wijayanto Ahdi Kurniawan Anggi Zafia Hasan Ibnu Salam Karisma Trinanda Putra Muhammad Yusvin Mustar Mustar, Muhamad Yusvin Nafi Ananda Utama Nurul Jidan Ismail Rahmat Adiprasetya Al Hasibi Rama Okta Wiyagi Ramadoni Syahputra Rohmansyah Setyonugroho, Winny Suripto, Slamet Syakir Jamaluddin Tajus Salatin Tony Khristanto Hariadi Wahyudi, Wahyudi Yudhi Ardiyanto Yudhi Ardiyanto