Elektron Jurnal Ilmiah (EJI - Department of Electrical Engineering, Politeknik Negeri Padang)
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PEMBUATAN ANTENA MIKROSTRIP MODEL ANGKA 4 UNTUK PENERIMA SINYAL TELEVISA PADA JALUR UHF (ULTRA HIGH FREKUENSI)
Get PDFDevelopment 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
PENGATURAN SUHU TERHADAP PRODUKSI GAS METAN PADA REAKTOR BIOGAS
Get PDFBiogas is a gas fermentation of organic materials which contain most of the gas methane, carbon dioxide, few of carbon monoxide, hydrogen, hydrogen sulfide, nitrogen and ammonia. One of technological development of biogas production is anaerobic reactor. The processing of biogas technology is influenced by several factors, such as temperature and humidity. In this study, temperature is adjusted using a spiral system and biogas reactor which submerged into the water. The temperature of water can be controlled. In another case there is reactor without temperature setting as a comparison. The observation shows that the reactor in the water produces most biogas, reactor spiral in second place and reactor without heating in the last one
SISTEM PENDUKUNG KEPUTUSAN UNTUK MEMILIH USAHA WARALABA MAKANAN MENGGUNAKAN METODE TOPSIS
Get PDFLarge 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
OTOMATISASI LAMPU UTAMA DAN LAMPU ISYARAT PADA KENDERAAN RODA DUA NON MATIK
Get PDFComply with the law is to be done by every citizen . As with the enactment of Law no. 22 of 2009, regarding Traffic and Transportation . In Article 107 requires a two-wheeled vehicle riders should always turn on the headlights , and article 112 , every motorist to change lanes or turn and should provide a signal 30 meters before, and turn off the lights and signals after moving lane or turn . However , riders wheeled vehicles often forget to turn on the main lights are always on and off after the turn signal lights . In this study, the authors make the automation to turn on the main light by using light neutral ( at the time porsenling neutral position ) , if the light is neutral on the main lights off and if the neutral light off the main lights on . For turn signal lights / moving point , in accordance with the provisions required distance , by exploiting holes in the brake disc front disc and using optho-interuptter sensor , then the distance can be calculated . From the experimental results , obtained sensor headlights are always on when porsneling not neutral , while the proximity sensor to turn the signal lights / moving point with average error is 0.0375 %
 
PENGISIAN AKI DENGAN BUCK CONVERTER
Get PDFBuck converter is one of DC chopper which has the function of stabilizing the voltage to lower voltage where the output voltage is lower than the input voltage without having to remove power is relatively large. By using a buck converter is a high voltage can be reduced to lower as you wish without losing power is relatively large. The voltage output of the buck converter is able to charge the battery. The magnitude of the output voltage depends dutycyle switching generated by the microcontroller. This tool is also equipped with a flow sensor is used to detect the charging current into the battery. If the charging current is reduced, the buzzer will sound. The tool is based microcontrollers using BASCOM ATMEGA8535, which can generate a PWM with dutycyle specified. Dutycyle determined the size of the input voltage and the desired output
CHURN PREDICTION PELANGGAN MENGGUNAKAN CRISP-DM (Studi Kasus Pelanggan TelkomFlexi Bandung)
Get PDFNowadays, the need to stay ahead of the competencies is one of the company's focus. In an effort to stay afloat in the competitive conditions, companies can perform a variety of information technology development. One of the information technologies that are currently being intensively developed is the use of Data Mining. Data Mining provides benefits to process data into useful information for a company. The main pont of the research on this journal is to establish data mining models to identify TelkomFlexi postpaid customers who have the possibility to move to another provider (churn analysis).Churn analysis is done so that the company can choose the most appropriate strategy in retaining customers. Type of data mining is used to churn analysis is classification
PERANCANGAN MULTIMEDIA PEMBELAJARAN INTERAKTIF DENGAN MENGGUNAKAN APLIKASI FLASH
Get PDFThe rapid development of multimedia technology can be utilized by the world of education, particularly in improving the way of learning to the learning process can be developed and not left behind by technological advances. In this research the development of multimedia applications in education. This application provides an interactive material with animation, audio, video and comes with an evaluation form about the exercises. Results will be achieved of the media making this learning is that students can understand subjects of digital system. It is expected that these applications can facilitate the learning process improve the quality of teaching and learning achievemen
PEMBUATAN ANTENA MIKROSTRIP PHASED ARRAY DENGAN PENGATURAN FASA MENGGUNAKAN VARIASI PANJANG SALURAN CATU
Get PDFA 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
PERANCANGAN DAN IMPLEMENTASI SISTEM INFORMASI PENELITIAN PADA UPT. PPKM ( UNIT PELAKSANA TUGAS PENELITIAN PENGABDIAN KEPADA MASYARAKAT ) POLITEKNIK NEGERI PADANG
Get PDFThis study aimed to create an information system on UPT.PPKM Padang State Polytechnic where the system is initially UPT.PPKM are still using Microsoft Access to process data that existing research. So that would make it difficult for employees to process the data, find the data if necessary and to report the research itself. The results of this study are expected to generate a summary report every major research, courses, lecturers so as to facilitate the search data related to research quickly. Making this system using PHP and MySQL
 
PENGUATAN SINYAL GLOBAL SYSTEM FOR MOBILE COMMUNICATION (GSM) 900 MHz MENGGUNAKAN ANTENA GRID
Get PDFThe antenna is a device used to transmit or receive electromagnetic waves electromagnetic waves. Reception using an antenna will amplify the signal acquisition in accordance with the ability of the antenna itself. Service providers GSM (Global System Mobile), with the inclusion of the network limitations make the need for strengthening the acquisition of the signal is very large. Grid antenna is one option reinforcement signal acquisition. Grid antenna has a major component that is driven in the form of a dipole and a reflector which serves to reflect the signal beam. In this final project is designed, realized and measured at the antenna grid on GSM 900 MHz. This antenna is intended to be a media aids in strengthening the GSM signal reception to maximize the signal acquisition and connection