Elektron Jurnal Ilmiah
Elektron Jurnal Ilmiah (EJI) is a peer-reviewed journal which is published by Department of Electrical Engineering, Politeknik Negeri Padang. The ISSN number is 2085-6989. EJI published the first edition in 2009 and since 2014, EJI publishes in Juni and December. The scopes of the journal are: electrical power, telecommunication, control, electronic and robotics.
Articles
165 Documents
<![CDATA[SISTEM PENDUKUNG KEPUTUSAN UNTUK MEMILIH USAHA WARALABA MAKANAN MENGGUNAKAN METODE TOPSIS ]]>
<![CDATA[Meri Azmi]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 5 No 2 (2013): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.5.2.55
<![CDATA[Large number of franchises that will be selected as well as indicators of many criteria, it is necessary to build a decision support system that will help decide which franchise to choose. The model used in the decision support system is a Multiple Attribute Decision Making (MADM) and to perform calculations on the case MADM method in finding the best alternative based on the criteria specified use traditional methods TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) to perform the calculations. TOPSIS method is chosen as the method is based on the concept that the best alternative was chosen not only has the shortest distance from the positive ideal solution, but also has the longest distance from the negative ideal solution.]]>
<![CDATA[ANALISA KERJA MANIFOLD ABSOLUTE PRESSURE (MAP) DAN KADAR KANDUNGAN EMISI GAS BUANG YANG DIHASILKAN PADA MOTOR BENSIN DENGAN SISTEM INJEKSI ELEKTRONIK TYPE D-EFI ]]>
<![CDATA[Toto Sugiarto]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 5 No 2 (2013): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.5.2.56
<![CDATA[This research is aim to : (1) Describe how Manifold Absolute Pressure (MAP) works at low, middle and high level rotation machine; (2) Knowing Levels of Exhaust Emission Content at low, middle and high level rotation machine. Experiment method was used for this research. EFI engine which is using MAP has been analyzed. Scan tool used to observe MAP performance and Four Gas Analyzer to detect and measure Exhaust Emission Content. From experiment found that increasing the spin machine will result in a decrease vacuum of the intake manifold. At low level rotation (750 rpm) the average of air vacuum through the MAP is 29.00 Kpa, the middle level (2000 rpm) is 26.67 Kpa, and at high speed level (5000 rpm) is 27 , 33 Kpa.]]>
<![CDATA[PEMBUATAN ANTENA MIKROSTRIP MODEL ANGKA 4 UNTUK PENERIMA SINYAL TELEVISA PADA JALUR UHF (ULTRA HIGH FREKUENSI) ]]>
<![CDATA[Lifwarda lifwarda]]>;
<![CDATA[Firdaus firdaus]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 5 No 2 (2013): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.5.2.57
<![CDATA[Development of science and technology very rapidly in various fields brought great influence to all aspects of life one of this field of telecommunications. Development of telecommunication technology that bring due faster to hight public demand for telecommunications services users get an easy and fast service are used as medium convey information One of the device in question is antenna. Many type of antennas that have been developed for the reception of televisions signals and are generally made of wires, pipes or aluminium which has large size and weight. Needed for the antenna which has advantages in terms of shape light weight small volume from that can be easily adapted to the priimary device for on the fabrication and can be used for a wide band frequency. The antenna is microstrip antennas capable adjusted in assembly or in other words easily in a microstrip antenna placement. Microstrip antenna models 4 is designed to work in the range frequency 470 – 750 MHz. This antenna has a value of more than -10 dB returnloss to a predetermined range frequency. The measurement results of the antenna resonates at a frequency of 518 MHz gain value obtained by 1 dB, and has a wide bandwidth of 7 MHz, while for polaradiasi shaped bidirectional.]]>
<![CDATA[PEMBUATAN ANTENA MIKROSTRIP PHASED ARRAY DENGAN PENGATURAN FASA MENGGUNAKAN VARIASI PANJANG SALURAN CATU ]]>
<![CDATA[Firdaus firdaus]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 5 No 2 (2013): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.5.2.58
<![CDATA[A microstrip phased array width phase is controlled by length of line feeder is presented in this paper for application in RADAR system. The microstrip array antenna is built from dipolelike individual elemen at center frequency 650 MHz. Five different length transmission lines are used to change current phase feeding in to the antenna which is 2λ, 2.125 λ, 2.025 λ, and 2.5 λ. The measured result reveal exelent agreement width the simaltions. The different length of transmission line able to change the radiation pattern which are 60o, 150o,210o dan 0o.]]>
<![CDATA[UNJUK KERJA DAN PEMANFAATAN INVERTER SEBAGAI PENGENDALI KECEPATAN MOTOR INDUKSI 3 PHASA ]]>
<![CDATA[Anton anton]]>;
<![CDATA[Tuti Angraini]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 5 No 2 (2013): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.5.2.59
<![CDATA[The Induction motors are found in industrial and domestic environments because of low cost of operation including, induction motors are widely used induction motor 1 phase and 3 phase. During operation of induction motors generally used at normal speed, but the specific purpose induction motors operated with variable speed. In order to obtain varying motor speed can be controlled using the inverter. The use of inverters here to give supplay voltage AC induction motor in which the magnitude of the frequency can be varied. Setting frequency of the inverter utilizing method pulse with modulation (PWM). The circuit used to build PWM, using Insulated Gate Bipolar Transistor (IGBT) technology. Values obtained variable frequency ranging from 4 Hz to 50 Hz, and acquired motor speed ranging from 12 rpm up to 1390 rpm.]]>
<![CDATA[Merancang Panel Kontrol Untuk Pompa Air dan Motor Pengerak Solar Cell ]]>
<![CDATA[Herisajani herisajani]]>;
<![CDATA[Nasrul nasrul]]>;
<![CDATA[Yandrika Putra]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 6 No 1 (2014): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.6.1.60
<![CDATA[At this present time increasing electrical energy requirements, and therefore found the latest energy is solar energy. Solar energy can be harnessed as a potential alternative energy source because the energy is very large as well as environmentally friendly. Tool that can be used to convert sunlight directly into electricity is called photovoltaic. On the control panel to control the water pump on the motor control circuit design life turns automatically and manually. To control the timing of the displacement of the pump used to pump two timers. On the control panel of diesel propulsion sell used four times the displacement step. Switching time between steps in the set by a timer. The control panel uses the same circuit with the motor circuit alternating rounds.]]>
<![CDATA[Reconnecting Sambungan Rumah (Sr) Pada Gardu 079 Sovia Untuk Mengurangi Losses Di PT PLN (Persero) Rayon Bukittinggi (Menggunakan Aplikasi Jaringan Syaraf Tiruan) ]]>
<![CDATA[Junaidi Asrul]]>;
<![CDATA[Firmansyah firmansyah]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 6 No 1 (2014): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.6.1.61
<![CDATA[Dengan melakukan reconnecting dapat mengatasi rugi-rugi energi. Pada titik sambungan percabangan disambungan rumah sampai ke kWh meter digantikan dengan compression Connector. Terminal pada kWh meter sering terjadi loss kontak. Dengan sering terjadinya loss kontak, maka terminal pada kWh meter digantikan dengan menggunakan joint sleeve bimetal. Besarnya rugi jaringan disebabkan oleh penggunaan tap connector pada titik sambungan dan terminal pada kWh meter pelanggan. Digardu 079 Sovia area kerja PT. PLN (Persero) rayon Bukittinggi mengalami rugi kWh salur pada bulan desember 2013-januari 2014 sebesar 13 %. Setelah dilakukan reconnecting, rugi kWh salur menurun menjadi 4,48% pada bulan Mei 2014. Dengan menggunakan jaringan Syaraf Tiruan, dapat dilihat kinerja untuk rugi kWh salur setelah dilakukan reconnecting lebih baik.]]>
<![CDATA[Proses Tracking Satelit Lapan-Tubsat Dengan Menggunakan Frekuensi S-Band ]]>
<![CDATA[Hadria Octavia]]>;
<![CDATA[Yustini yustini]]>;
<![CDATA[Firdaus firdaus]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 6 No 1 (2014): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.6.1.62
<![CDATA[Satelit LAPAN-TUBSAT yang merupakan satelit mikro pertama yang dibangun LAPAN Indonesia yang bekerja sama dengan Technical University of Berlin (TU-Berlin, Jerman), hingga kini telah dapat menghasilkan gambar video daerah-daerah diwilayah Indonesia sesuai misinya yaitu sebagai satelit surveillance yang mengamati permukaan bumi. Satelit LAPAN-TUBAT ini beredar pada orbit polar, bergerak dan melingkupi seluruh daerah di Indonesia dari timur ke barat seiring dengan rotasi bumi. Untuk memanfaatkan satelit ini secara maksimal maka perlu disiapkan stasiun bumi kendali dan penerima data payload (muatan) satelit terebut. Operasi satelit LAPAN-TUBSAT yang dilakukan melingkupi 2 (dua) hal pokok yaitu operasi pengamatan kondisi kesehatan satelit dan operasi muatan satelit dalam perolehan data video. Sementara fungsi dasar operasi satelit ini melakukan fungsi Telemetri Tracking and Command (TT&C) yaitu melakukan operasi Telemetri, penjejakkan (Tracking) satelit dan operasi pengiriman data komando (Command) ke satelit untuk melaksanakan misi operasinya.]]>
<![CDATA[Unjuk Kerja Transmisi Video Dengan Teknik Pengkodean Spasial Skalabilitas ]]>
<![CDATA[Agus Purwadi]]>;
<![CDATA[Hadria Octavia]]>;
<![CDATA[Ichsan Mahjud]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 6 No 1 (2014): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.6.1.63
<![CDATA[Video transmission over the internet can be a great possibility of the existence of lost packets (packet loss) and load variations in a large bandwidth. This is a source of network congestion can interfere with the rate of data communication. In this paper the proposed planning optimal error control in scalable video transmission to a video coding technique FGS (Fine Granularity Scalability), which is an improvement on the MPEG-4 video coding, which has outputs are scalable base layer and layer Enhanchement that have different sizes and rates , which the application will be adapted to the transmission network conditions, the ultimate goal is to minimize any distortion from the source to the destination. In the simulation yields a value Peak Signal to Noise Ratio (PSNR) on the base layer of 29, 683 dB and 78,917 dB enhancemenet layer and the base layer for the MSE of 69,998 dB and 0,000834417 dB enhancemenet layer, Means Square Error (MSE) as the performance of the network system performance on video quality for both the base layer and layer Enhanchement]]>
<![CDATA[Faktor-Faktor Yang Mempengaruhi Staf Pengajar Di Institusi Pendidikan Tinggi Untuk Menggunakan Multimedia ]]>
<![CDATA[Rinaldi rinaldi]]>;
<![CDATA[Efrizon efrizon]]>
<![CDATA[ Elektron : Jurnal Ilmiah Vol 6 No 1 (2014): Elektron Jurnal Ilmiah ]]>
Publisher : <![CDATA[Teknik Elektro Politeknik Negeri Padang ]]>
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DOI: 10.30630/eji.6.1.64
<![CDATA[This study is a descriptive study of the application towards multimedia that conducted in higher institution, West Sumatera with the objectives of assessing the factors affecting multimedia application in higher institution lecturers. It employed a survey questionnaire to collect respondents’ responses by using Likert-5 point type scales. It was conducted on 250 lecturers by using stratified random sampling from three types of higher institutions. Data collected and analyzed by using Statistical for the Social Sciences 19.0 (SPSS 19.0). Descriptive analysis shows that factors affecting multimedia application are limited amount of equipments, less support from the institution, no confidence in using multimedia for teaching, damaged equipments, insufficient time to prepare multimedia-based teaching materials, not enough salaries to assist in carrying out their duties properly, increased teaching workloads, ineffective multimedia training and no rewards or incentives from the institution for using multimedia in teaching. As conclusion, this study can be used by the relevant authorities to take action in improving education.]]>
