Markus Dwiyanto Tobi

Electrical energy can not be separated from the name kWh Meter, a tool used to measure and record the amount of electrical energy usage has a shortage of kWh meters can not be monitored remotely how much energy is used, so it is rather inconvenient for PLN officials to check the use of electricity for postpaid customers. This research was conducted to design a prototype of a wireless electrical energy transmission system and design a wireless electrical energy recording system using the NRF24L01 wireless transmitter module and the PZEM004T kWh meter module. The design in this study uses the principle of electromagnetic induction to transfer electrical energy at close range, while to transmit data, the authors use the NRF24L01 module. Besides, the authors use the PZEM004T module to measure various magnitudes. Based on the results of observations and measurements of the design of the tool, the authors found that the transmission of electrical energy using electromagnetic induction is not effective for longer distances because the energy lost in the air is getting bigger. So this technology needs to be further investigated. Besides, the measurement of electrical quantities using the PZEM module has a small difference (under 2%) with measurements using a multimeter, so it can be said that the measurement with the PZEM004T module is effective

PLC control is basically a computer designed to replace a relay-based system. SMK Negeri 3 Sorong as one of the Vocational High Schools in Sorong-West Papua has an Electricity Engineering Expertise Program that studies PLC mastery competencies, but from observations made by researchers at SMK Negeri 3 Sorong it turns out that it does not have adequate practice modules in the subject of applying PLC to control of industrial electric motors and there are also difficulties for teachers in these schools in providing learning competency in electric motor control techniques, especially in terms of application or practice. The implementation of the module that will be designed and applied is a learning medium that will help the process of practicing skills in electric motor control engineering competencies automatically using the PLC Omron CP1E module. This module is designed to pay attention to several important things as follows: (1). Practice module in accordance with existing competency standards, (2). Easy to use, and (3). Helps the level of understanding of teachers and students in applying it. This practical module is also used to study the working principle parts of the up / down motor control system with the addition of a simulation module of the lift motor work system using a limit switch that detects the presence of the lift box. At the PLC output, a motor power window and lift indicator are used which indicate the lift box is automatically running.

The financial payment system and school committee at SMK Negeri 3 Sorong are currently still conventional by recording on several payment cards then the payment data is recapitulated manually in a financial record book manually. This system takes a long time to process and has a large error rate. Besides, the speed of data access (reports), if needed, becomes too late, so that the speed of access to decision making is also hampered. This system should be replaced by using an integrated financial information system. This system can be accessed publicly via the internet network, so it is hoped that this system can facilitate the work of financial accounting and reporting. This research has the main objective of building an integrated financial information system, so it is hoped that this system will maximize the work of financial officers. The result of this research is an integrated payment application system product that will benefit the SMK Negeri 3 school institution. This study uses the RnD research method, in developing software adopting the waterfall method with the stages of planning, analysis, design, implementation, maintenance. Data collection methods in this research are observation and interview methods. This application was developed using PHP and Mysql. This payment information system provides facilities that can be used by users including data input, data search, and student payment reports, as well as real-time monitoring by homeroom teachers and school stakeholders.

Technological advances in the field of robotics have entered various aspects of human life ranging from automation in the fields of industry, military, entertainment, and in the medical field. Humanoid robot or humanoid robot is a form of technology implementation in the field of robotics that can mimic some human activities to walk and move several body organs like humans. The design of Jaipong Dance Robot based on CM-530 consists of a minimum system that functions as a controller of servo motor movement as a robot actuator and processes the data generated by the gyro sensor as a balance sensor. The design of Jaipong Dance Robot based on CM-530 has been successfully made and can work well, from standing movements, opening 1, opening 2, pencugan 1, pencugan 2, mincid kendor 1, pencugan 3, mincid kendor 2, mincid gancang 1, mincid gancang 2, mincid gancang 3, mincid gancang 4, nibakeun, dan mincid gancang 5, the success rate is 80%. Gyroscope GS-12 sensor can provide the desired balance point, the Dynamixel AX-12A Servo Motor as propulsion which is located at each joint of the jaipong dance robot, the Battery / Power Supply as the power provider.

Electricity is needed by the whole society. Sasnek village is one of the villages located in Sawiat District, South Sorong Regency, West Papua Province. Sasnek village is very clear and inhabited around 100KK. This village has not been served by electricity until now. Micro-hydro power plants are small-scale power plants whose capacity presents between 100 W to 100 kW. This study will be used for loading stages with a 12 Volt DC power capacity, because it is one of the most efficient, young and safe ways. Measurement of air discharge, discharged by 2 liters / second from a measurement area of 5 m2 and an average air speed of 00.65 m / d. However, due to the condition of the river water flowing throughout the year in the sense of never dried, then used a correction factor of 0.75. Thus the flow that can be used is equal to 0.65 m3 / d. Based on the analysis of the potential contained in Sasnek PLTMH, it can be calculated Distribution Grid sourced from Sasnek PLTMH is 10 KW.With the careful planning so that the results of its implementation will give a positive impact to be meeting the needs of electricity in the village and surrounding villages sasnek.

The increasing population development in Sorong district is seen from the mushrooming of developers who build housing and the construction of shops which of course the need for electrical energy continues to increase. Thus electricity is an important requirement in human life so as to obtain electricity reliably and continuously, PLN is required to manage to maintain a stable distribution of electrical energy that is sustainable to consumers. One phenomenon that is always experienced in the field is the uneven distribution of loads from the secondary side of the transformer to the customer. This causes unbalanced load between phase R, S and T which in turn causes the current to flow in the neutral conductor of the transformer, so that the current causes losses in the transformer. In this study an analysis was conducted to find out how much influence the load losses have on the efficiency of the 100 kVA distribution transformer at PLN. After calculating and analyzing, it is found that due to load imbalance in R, S and T phases, this results in daytime load losses of 0.499 kW and increases at night by 0.746 kW. Increasing load losses results in lower transformer performance and lower efficiency.

Penelitian yang dilakukan bertujuan untuk membuat sistem pengendalian kecepatan dan pengereman motor DC secara elektris yang digunakan sebagai referensi sistem keamanan mobil listrik. Dengan mengatur besar kecil tegangan yang diterima motor DC. Sistem ini menggunakan Arduino UNO sebagai controller. Untuk mengukur jarak mobil dengan penghalang menggunakan sensor jarak Ping Parallax. Sinyal PWM (Pulse Width Modulation) dari mikrokontroler digunakan untuk mengatur kecepatan motor DC sebagai penggerak utama kenderaan. Pengujian dilakukan menggunakan miniatur mobil dengan jaraki lintasan ssepanjang 2 (dua) meter. Laju miniatur mobil listrik akan berhenti sebelum terjadi tabrakan. pengereman menggunakan metode secara plugging yaitu dengan membalik polaritas sumber pada jarak dibawah 10 (sepuluh) cm, sehingga motor akan berputar balik untuk menghindari sisa putaran motor yang sudah tidak mendapatkan supply tegangan. Dari metode ini didapat beberapa kondisi motor akan berhenti secara bertahap. Tampilan jarak antara kenderaan dengan penghalangdan kecepatan putaran motor dapat dilihat pada LCD.

This study aims to determine: the significance of the relationship between the use of chemical laboratory facilities and student chemistry learning achievements; and the significance of the discipline of learning chemistry students with chemistry learning achievements. The populations in this study were students of class XII Science in SMA N 1 Sorong. A total of 97 students were taken using the Proportionate Random Sampling technique. The data collection methods used were questionnaires and documentation studies. The results showed that: 1) there was no positive and significant relationship between the use of chemical laboratory facilities and student chemistry learning achievements; and 2) there is no positive and significant relationship between the discipline of chemistry learning students and students' chemistry learning achievement.

This study aims to determine the significance of the relationship between the use of chemical laboratory facilities and student chemistry learning achievements and the significance of the discipline of learning chemistry students with chemistry learning achievements. The populations in this study were students of class XII Science in SMA N 1 Sorong. A total of 97 students were taken using the Proportionate Random Sampling technique. The data collection methods used were questionnaires and documentation studies. The results showed that: 1) there was no positive and significant relationship between the use of chemical laboratory facilities and student chemistry learning achievements; and 2) there is no positive and significant relationship between the discipline of chemistry learning students and students' chemistry learning achievement.

Generator Induksi adalah bagian dari mesin listrik arus bolak balik. Generator arus bolak balik berfungsi mengubah tenaga mekanis menjadi tenaga listrik arus bolak balik. Pada generator Induksi terdapat dua jenis karakteristik yaitu karakteristik beban nol dan berbeban. Karakteristik beban nol adalah karakeristik generator saat tidak ada beban. Sedangkan karakeristik berbeban adalah karakteristik generator saat telah di berikan beban. Karakteristik Beban Nol Meliputi Besarnya Tegangan Terminal, Arus Medan, Dan Fluks Magnetic Yang Di Hasilkan. Generator induksi bekerja dengan penguatan sendiri dengan menggunakan kapasitor. Kapasitor sangat berpengaruh pada karakteristik beban nol, karena kapasitor yang dialiri arus bolak balik akan menghasilkan reaktansi kapasitif, yang akan menghasilkan arus medan. Arus medan yang di hasilkan akan mempengaruhi besarnya tegangan terminal.sehingga pada saat nilai tegangan terminal telah di ketahui maka dapat di buat perhitungan untuk mencari besarnya nilai fluks magnetik.