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All Journal KALAM CENDEKIA PGSD KEBUMEN PROTON Proceeding of the Electrical Engineering Computer Science and Informatics Proceeding of the Electrical Engineering Computer Science and Informatics Edu Elektrika Journal Journal of Electrical Power Control and Automation (JEPCA) Electrician : Jurnal Rekayasa dan Teknologi Elektro
EDI SARWONO
Universitas Negeri Semarang
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering

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STUDY EXPERIMENTAL PENGARUH SPARK PLUG CLEARANCE TERHADAP DAYA DAN EFISIENSI PADA MOTOR MATIC Sarwono, Edi; Putra, Toni Dwi; Suyatno, Agus
PROTON Vol 5, No 1 (2013)
Publisher : PROTON

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Abstract

Pada internal combustion engine dipengaruhi oleh proses pembakaran, sedangkan proses pembakaran dipengaruhi oleh berbagai variabel. Dari berbagai variabel tersebut salah satunya adalah celah busi. Celah busi ini akan mempengaruhi kualitas loncatan bunga api. Dengan demikian perlu dilakukan penelitian untuk mengetahui pengaruh spark plug clearence terhadap daya dan efisiensi pada motor matic. Penelitian dilakukan menggunakan metode experimental. Kendaraan yang digunakan adalah mesin Yamaha Mio matic 113.7 cc silinder tunggal. Menggunakan 3 variasi celah busi yaitu 0.6 mm, 0,8 mm, 1 mm. Sedangkan putaran juga divariasikan mulai dari 3000 rpm, 4000 rpm, 5000 rpm, 6000 rpm dan  7000 rpm. Hasil penelitian menunjukkan bahwa daya roda yang tertinggi dihasilkan engine dengan jarak elektroda busi 0,60 mm menghasilkan 4,85 HP di putaran 7000 rpm. Daya bahan bakar tertinggi terjadi pada putaran 7000 rpm dengan jarak elektroda busi 0,60 mm, dengan nilai sebesar 7,84 HP. Effisiensi terbesar pada celah busi 0,60 mm yaitu 61,82 % di putaran 7000 rpm.   Kata kunci : Celah busi, putaran, daya dan efisiensi.
PENGGUNAAN METODE INKUIRI DALAM PENINGKATAN PEMBELAJARAN MATEMATIKA TENTANG BANGUN RUANG PADA SISWA KELAS V SDN PURWODADI SARWONO, EDI
KALAM CENDEKIA PGSD KEBUMEN Vol 1, No 3 (2013): KALAM CENDEKIA PGSD KEBUMEN
Publisher : KALAM CENDEKIA PGSD KEBUMEN

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Abstract

Edi Sarwono1, Imam Suyanto2, Harun S. Budi3   Abstract: The use of methods of inquiry in improving mathematics learning about shape on Elementary School fifth grade students. This study aims to determine the effectiveness of the use of methods of inquiry in mathematics learning especially in the shape of material in elementary school fifth grade. This study uses classroom action research method. Research was conducted in three cycles. Results show, the use of inquiry method can improve learning outcomes of the mathematics abaut a shape.   Keywords: Inquiry Metod, Learning Matematic, a shape.   Abstrak: Pengunaan Metode inkuiri dalam peningkatan pembelajaran matematika tentang bangun ruang pada siswa kelas V Sekolah Dasar. Penelitian ini bertujuan untuk mengetahui efektifitas pengunaan metode inkuiri dalam pembelajaran matematika khususnya pada materi bangun ruang di kelas V sekolah dasar. Penelitian ini mengunakan metode penelitian tindakan kelas. Penelitian ini dilakukan dalam tiga siklus. Hasil penelitian menunjukan, penggunaan metode inkuiri dapat meningkatkan hasil pembelajaran matematika tentang bangun ruang.   Kata Kunci: metode inkuiri, pembelajaran matematika, bangun ruang
Karakteristik Hamonik Pada Beban Nonlinear Lampu LED Sarwono, Edi
Edu Elektrika Journal Vol 8 No 2 (2019): Edu Elektrika Journal
Publisher : Electrical Engineering, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/eej.v8i2.38548

Abstract

Harmonics is a phenomenon in electric power systems that causes quality problems where the current or voltage waveforms of the supply will become distorted so that it can cause overheating in each magnetic core in the electrical equipment. This enlargement of the harmonics triggers the enlargement of power losses in the core due to the eddy currents it causes. This will reduce the input energy so that the efficiency of the tool decreases. Harmonic distortion of the sinusoidal waveforms of voltage and current needs to be investigated and these harmonics are generally triggered by nonlinear loads, one of which is LED lamp. LED lamps are one of the nonlinear loads that use rectifier components in them. In this research, we have tested the voltage harmonic content, current harmonic, on 3 brands of LED lamps and used the IEEE 519-2014 standard as a reference in setting the maximum harmonic voltage and current limits. Measurements in this study were carried out using the HIOKI 3197 brand Power Quality Analyzer. From the test results showed that the total harmonic distortion (THD) voltage on various brands of LED lamps did not exceed the IEEE 519-2014 standard limit which is a maximum of 5% because the largest harmonic voltage is 2, 9%. While the total harmonic distortion (THD) of current in various brands of LED lamps has the largest THD value of 170.6%.
Investigation of Passive Filter for LED Lamp Sarwono, Edi; Facta, Mochammad; Handoko, Susatyo
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 3: EECSI 2016
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (830.056 KB) | DOI: 10.11591/eecsi.v3.1156

Abstract

Light Emitting Diode lamp or LED lamp is one of the energy saving lamps nowadays widely used by consumers. However, LED lamp has contained harmonics caused by the rectifier circuit inside the lamp. Harmonics cause a quality problem in power system. As the harmonics present in current or voltage, the waveforms are distorted. Harmonics can lead to overheating in magnetic core of electrical equipments. In this paper, several tests are carried out to investigate the harmonic content of voltage and currents, and also the level of light intensity of the two brands of LED lamps. Measurements in this study are conducted by using HIOKI Power Quality Analyzer 3197. The test results show that the total harmonic distortion or THD of voltage on various brands of LED lamps did not exceed 5% as in compliance to the limit of IEEE standard 519-1992. The largest harmonic voltage is 2.9%, while maximum harmonic current for tested brands of LED lamp is 170.6%. The use of low pass filter in the form of LC filter was proposed. Based on experimental results, the application of LC filter at input side of LED lamp has successfully reduced THD current in the range of 85%-88%.
Karakteristik Hamonik Pada Beban Nonlinear Lampu LED Sarwono, Edi
Edu Elektrika Journal Vol 8 No 2 (2019): Edu Elektrika Journal
Publisher : Electrical Engineering, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/eej.v8i2.38548

Abstract

Harmonics is a phenomenon in electric power systems that causes quality problems where the current or voltage waveforms of the supply will become distorted so that it can cause overheating in each magnetic core in the electrical equipment. This enlargement of the harmonics triggers the enlargement of power losses in the core due to the eddy currents it causes. This will reduce the input energy so that the efficiency of the tool decreases. Harmonic distortion of the sinusoidal waveforms of voltage and current needs to be investigated and these harmonics are generally triggered by nonlinear loads, one of which is LED lamp. LED lamps are one of the nonlinear loads that use rectifier components in them. In this research, we have tested the voltage harmonic content, current harmonic, on 3 brands of LED lamps and used the IEEE 519-2014 standard as a reference in setting the maximum harmonic voltage and current limits. Measurements in this study were carried out using the HIOKI 3197 brand Power Quality Analyzer. From the test results showed that the total harmonic distortion (THD) voltage on various brands of LED lamps did not exceed the IEEE 519-2014 standard limit which is a maximum of 5% because the largest harmonic voltage is 2, 9%. While the total harmonic distortion (THD) of current in various brands of LED lamps has the largest THD value of 170.6%.
Investigation of Passive Filter for LED Lamp Edi Sarwono; Mochammad Facta; Susatyo Handoko
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 3: EECSI 2016
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (830.056 KB) | DOI: 10.11591/eecsi.v3.1156

Abstract

Light Emitting Diode lamp or LED lamp is one of the energy saving lamps nowadays widely used by consumers. However, LED lamp has contained harmonics caused by the rectifier circuit inside the lamp. Harmonics cause a quality problem in power system. As the harmonics present in current or voltage, the waveforms are distorted. Harmonics can lead to overheating in magnetic core of electrical equipments. In this paper, several tests are carried out to investigate the harmonic content of voltage and currents, and also the level of light intensity of the two brands of LED lamps. Measurements in this study are conducted by using HIOKI Power Quality Analyzer 3197. The test results show that the total harmonic distortion or THD of voltage on various brands of LED lamps did not exceed 5% as in compliance to the limit of IEEE standard 519-1992. The largest harmonic voltage is 2.9%, while maximum harmonic current for tested brands of LED lamp is 170.6%. The use of low pass filter in the form of LC filter was proposed. Based on experimental results, the application of LC filter at input side of LED lamp has successfully reduced THD current in the range of 85%-88%.
Alat Penyempot Pestisida Tenaga Surya Menggunakan Panel Surya 30W Edi Sarwono; Subiyanto Subiyanto; Yohanes Primadiyono; Riana Defi Mahadji Putri; Ari Dwi Prasetio; Asriningati Asriningati; Fahimatul Ilmi
Journal of Electrical Power Control and Automation (JEPCA) Vol 4, No 2 (2021): Desember
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jepca.v4i2.50

Abstract

Pesticide sprayer tools that are widely used by farmers are still using hands or fossil fuel machines, so they are still classified as traditional and ineffective methods. Some of the weaknesses of the traditional method include less practical, fossil fuels that will run out and the impact on the environment. Solar energy from the sun can be a solution to these problems. Solar panels are devices used to convert sunlight into electrical energy. In this study, a monocrystalline 30W solar panel was used as a tool used to capture sunlight. By utilizing solar power as an energy source sprayer and pump so that it can take advantage of the hand pressing the lever and refilling it manually. In addition, preferring solar power over fossil fuel engines can reduce the use of fossil fuels and further strengthen renewable energy that will not run out and is environmentally friendly. In this study, solar panels were installed above the head to maximize the capture of sunlight and also protect the head from the heat of the sun. The results showed that the battery energy required to spray the difference in battery percentage from 10 liters to 6 liters of liquid volume was 4% and from 6 liters to 2 liters of liquid volume was 6%.
Alat Penyempot Pestisida Tenaga Surya Edi Sarwono
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 16 No. 1 (2022)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

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Abstract

Alat penyemprot estisida yang banyak digunakan oleh petani masih menggunakan tangan atau pun mesin berbahan bakar fosil, sehingga masih tergolong cara tradisional dan tidak efektif. Beberapa kelemahan dari cara tradisional tersebut diantaranya kurang praktis, bahan bakar fosil yang akan habis dan dampak terhadap lingkungan. Energi surya yang berasal dari matahari dapat menjadi solusi permasalahan tersebut. Panel surya yang merupakan alat yang digunakan untuk mengkonversi sinar matahari menjadi energi listrik. Dengan memanfaatkan tenaga surya sebagai sumber energi sprayer dan pompa sehingga dapat menggantikan tangan yang menekan tuas dan mengisi ulang secara manual. Selain itu dengan lebih memilih tenaga surya dibandingkan mesin bahan bakar fosil dapat mengurangi penggunaan bahan bakar fosil dan lebih memanfatkan energi terbarukan yang tidak akan habis serta ramah lingkungan. Pada penelitian ini panel surya dipasang di atas kepala untuk memaksimalkan penangkapan cahaya matahari dan juga melindungi kepala dari panas sinar matahari. Hasil penelitian menunjukkan bahwa energi baterai yang dibutuhkan untuk penyemprotan memiliki selisih persentase baterai dari volume cairan 10 liter ke 6 liter adalah 4 persen dan dari volume cairan 6 liter ke 2 liter adalah 6 persen.
Co-Authors Ari Dwi Prasetio Asriningati Asriningati Fahimatul Ilmi Mochammad Facta Nasution, Annio Indah Lestari Riana Defi Mahadji Putri Susatyo Handoko Toni Dwi Putra Yohanes Primadiyono, Yohanes