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All Journal Al-Khwarizmi: Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam Infotekmesin
Zulfahmi Muassar, Mifta
Unknown Affiliation
Computer Science & IT Education Electrical & Electronics Engineering Mathematics Mechanical Engineering

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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.
Analisis Disposisi Matematis Ditinjau Dari Tipe Kepribadian Keirsey Pada Siswa Sekolah Menengah Atas A, Winda; Rahmah, Nur; Saputri Laswi, Aishiyah; Nasaruddin, Nasaruddin; Irma, Irma; Zulfahmi Muassar, Mifta; Rahman, Abd
Al-Khwarizmi : Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam Vol. 12 No. 2 (2024): Al-Khwarizmi : Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam
Publisher : Prodi Pendidikan Matematika FTIK IAIN Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24256/jpmipa.v12i2.6295

Abstract

Abstract: This study aims to determine the level of disposition of the Guardian personality type, Artisan type, Rational type, and Idealist type based on disposition characteristics, namely: Self-confidence, Curiosity, Perseverance, Flexibility, Reflective. This research uses descriptive quantitative research. Data collection techniques were selected using purposive sampling techniques based on student personality types determined through questionnaires. Based on the results of the analysis and discussion, it shows that the subject of students' mathematical disposition obtained: Guardian type 79% characterized by the fulfillment of 4 indicators of mathematical disposition with high categories, namely curiosity, perseverance, flexibility, reflective. Artisan type 74% is characterized by the fulfillment of 2 indicators with moderate categories, namely, self- confidence and flexibility. The 76% Rational type is characterized by the fulfillment of 3 indicators, namely, self-confidence, curiosity and perseverance with high categories. The Idealist type is 77% characterized by the fulfillment of 3 indicators, namely, self- confidence, curiosity and perseverance with high categories. Abstrak: Penelitian ini bertujuan untuk mengetahui tingkat disposisi dari tipe kepribadian Guardian, tipe Artisan, tipe rasional, dan tipe Idealist berdasarkan karateristik disposisi yaitu : Kepercayaan diri, Keingintahuan, Ketekunan, Fleksibilitas, Reflektif, Penelitian ini menggunakan penelitian kuantitatif deskriptif. Teknik pengumpulan data dipilih menggunakan teknik purposive sampling berdasarkan tipe kepribadian siswa yang ditentukan melalui angket. Berdasarkan hasil analisis dan pembahasan, menunjukkan bahwa subjek dari disposisi matematis siswa memperoleh: tipe Guardian 79% ditandai dengan terpenuhinya 4 indikator disposisi matematis dengan kategori tinggi yaitu keingintahuan, ketekunan, fleksibilitas, reflektif. Tipe Artisan 74% ditandai dengan terpenuhinya 2 indikator dengan kategori sedang yaitu, kpercayaan diri dan fleksibilitas. Tipe rasional 76% ditandai dengan terpenuhinya 3 indikator yaitu, kepercayaan diri, keingin tahuan dan ketekunandengan kategori tinggi. Tipe Idealist 77% ditandai dengan terpenuhinya 3 indikator yaitu, kepercayaan diri, keingin tahuan dan ketekunan dengan kategori tinggi.
Co-Authors A, Winda Abd Rahman Fadhillah Hazrina Irma Irma Nasaruddin Nasaruddin Nur Rahmah Prima Dewi, Riyani Saputri Laswi, Aishiyah Sari, Laura Widianingsih, Betti