Electrification Status of Alue Keujrun Village and Kluet River Hydrokinetic Energy Potential: A Survey Report

This paper provides survey results of an electricity system that has been carried out from isolated village of Alue Keujrun, South Aceh, Indonesia. The village has a central photovoltaic power plant and a micro hydro power plant. Various problems in the field such as operation errors, lack of maintenance of the electric power system, low voltage and frequency have been found. Power plant operators have also never received any formal training from any institution. The village is located next to the Kluet river which has a very large potential to become a hydrokinetic power plant energy source. Therefore the Kluet river flow velocity was also measured during the survey and described within this paper. Based on the interviews results with local operators, the village power plant does not have an operating permit. Thus, we consider that it is important to review the types of permits required to establish a power plant in Indonesia, including small-scale power plants.

Simulasi Perancangan Solar Tracker Pada Pembangkit Listrik Wind-Solar

The research was conducted to explain how to design a simulation of Solar tracker on Wind-Solar hybrid technology. The simulation were carried out with proteus software simulation. Solar tracker has four LDR sensors and an Arduino Uno Microcontroller which assist the Solar tracker to estimating position of the sun to use a servo motor for solar cell movement. For the result, When the upper light intensity (LDR 1 and LDR 2) is greater than the bottom (LDR 3 and LDR 4), solar cell will move upwards, and vice versa. When the light intensity of the left (LDR 1 and LDR 3) is greater than the right (LDR 2 and LDR 4), solar cell will move to the left, and vice versa. From the research, it could concluded that Solar Tracker can be applied to Wind-Solar technology solar cells

Rancang Bangun Pemutus Otomatis Charger Baterai Laptop dengan Algoritma Watchdog Berbasis Single Board Microcontroller

Laptop is kind of device which recently used by students, teachers, workers, professionals or executives. As the electronics tools, Laptop is supported by a battery and charger. To save battery life, laptop users usually disconnect the charger from the laptop while the indicator shows the battery is fully charged or when the laptop is turned off. However, due to practicality considerations, it often happens that the AC side of the charger is still connected to the voltage source. However, it was a waste condition. Because even though it's small, when the battery is full the charger still dissipates power. In this study, a device was designed and built which has the ability to disconnect the AC source from the charger when the DC charger side is not connected to the laptop. The watchdog algorithm is used to determine when the current should be cut off. The device is realized by using a Single Board Microcontroller (SBM) and a current sensor ACS712.

Analisa Pengaruh Perbedaan Winding terhadap Back EMF dan Ke pada PMSG 18s16p

Electrical energy depends on the non-renewable natural resources which depletion all year. It has been a reason to run the research about renewable energy. In terms of renewable energy, wind power, has various types of wind turbines which able to produce quality new renewable electrical energy. The problems should be assessed was how to wind a coil or winding in a generator needs. It was important to result a good quality wind turbine. From this study, there are 2 winding options on the PMSG 18s16p which have same winding direction for each coil with average tension. This winding obtained about 4.188 V. The second option was the winding which has an average voltage value of 4.762 V but the windings stand in the opposite direction for some coils. It should been considered by an engineer if the use of generator to produce a larger output. On the other hand, to make easier manufacturing, the next study must sacrifice the resulting output.

Potensi Pembangkit Listrik Tenaga Angin di Pantai Blimbingsari Kabupaten Banyuwangi

Penelitian ini bertujuan untuk mengetahui potensi angin di Pantai Blimbingsari Kabupaten Banyuwangi sebagai energi listrik alternatif. Objek penelitian ini harus mengetahui besarnya kecepatan angin dan daya listrik yang dihasilkan di Pantai Blimbingsari. Energi alternatif listrik dapat mengatasi keterbatasan listrik dan membantu penerangan penjual ikan bakar di sekitar pantai Blimbingsari. Metode penelitian yang digunakan yaitu survey dan Aplikasi Zephyrus WindMeter di Smarthphone. Survey dilakukan secara langsung di pantai Blimbingsari pada jam 08.00-16.00 WIB dengan menggunakan Aplikasi Zephyrus WindMeter dalam pengambilan data kecepatan angin. Pengambilan data dilakukan di 5 titik acuan dengan pengukuran sebanyak 3 kali setiap titik acuan. Beberapa kajian literatur jurnal menunjukkan bahwa angin memiliki potensi untuk dijadikan energi alternatif dengan pembuatan pembangkit listrik tenaga angin yang efektif. Berdasarkan perhitungan menunjukkan data hasil bahwa pantai Blimbingsari berpotensi rendah dengan rerata kecepatan maksimal yang terukur 2,5 m/s dan daya yang dihasilkan dari perhitungan 28,7 watt. Sehingga diperlukan alternatif lain yang dirancang untuk mengatasi kecepatan angin yang rendah untuk perancangan Pembangkit listrik.

Pengaruh Penerapan Model STAD Dalam Meningkatkan Hasil Belajar Materi Jaringan Telekomunikasi

A previous observations has been conducted at SMK Negeri 5 Telkom Banda Aceh, before run the research. The previous data showed that the school had implemented a learning process that was divided into study groups, but not categorized as student centered learning. Based on this reason, the research conducted with applying the STAD (student Team Achievement Division) type of cooperative learning. Theoretically, STAD is one of the model that involved students active. The purpose of this study, to determine the effect of the STAD type model in improving student learning outcomes on telecommunication network subject. The sample involved in the study is the class that has a lower pre-test score than the other classes. The instrument used were tests and observations. The results showed that the average value in the experimental class after the STAD model was applied was 80.75, while the control class has the average in 46.1. in terms of hypotheses results, Ha was accepted and Ho was rejected because the results of the t-test obtained tcount > ttable (8.3 > 2.66). Thus, the STAD models provides better learning outcomes than the konventional model.

Pengaruh Intensitas Cahaya Terhadap Nyala Lampu dengan Menggunakan Sensor Cahaya Light Dependent Resistor

The purpose of this research is to analyze the relationship between the intensity of light hitting the LDR to the resistance and the flame of the light. The research created an automatic lighting system, in which the lighting system was designed to turn on or off lights by light intensity. This research created automatic light controls using LDR light sensor. The LDR light sensor set is used as a switch that turns on or off a light automatically based on the recieved of intensity of light. By using the LDR components, it can design a series of light sensors for such items as outdoor light sensors, sleeping lights, garden lights, road lights that turn on at night and go out during the day automatically. The equipment used of the research were 2 test lamps, and done with 2 lighting sources, a natural source of lighting and an artificial source of lighting. From the research, it showed that the large light intensity affects the light flame by using LDR light sensor. It could be concluded that the greater of the light hitting intensity from the LDR surface was smaller than the value of the resistance and the flickering of the light. In contrast, the less light that affects the LDR, was the greater value of LDR resistance and lighter the light.

Analisis Kelayakan Air Berbasis Android

This research was conducted to identify the test of the water quality which good for consumption. It can be proved from temperature, turbidity level, and TDS (Total Dissolved Solids). By tempting the sensor, the turbidity and TDS meter controlled with the Arduino uno and the MCU node is forwarded to send data to the bylink application. The bylink application will help in monitoring water conditions by displaying the water condition which fit for consuming. The method used in this research was started with making a prototype then producing data to determine the feasibility of water through the TDS sensor, temperature sensor, and NTU (water clarity). This indicators were developed on an Android system whom the user could determine feasibility water easier.

Analisis Implementasi Aplikasi Pembelajaran Interaktif Calistung Dengan Pendekatan Technology Acceptance Model

The advancement of smartphone technology has an impact in the field of education, especially in application-based interactive learning media. Based on the results of interviews at the Paya Laba Public Elementary School (SDN), some of the students have difficulty in using interactive learning media based on applications, ranging from operating skills, equipment, habits, benefits and others. Thus, to measure the level of acceptance of the use of interactive learning applications for reading, writing and arithmetic skills at SDN Paya Laba culd conducted by using a theoretical method which described the level of technology acceptance, namely the Technology Acceptance Model (TAM). However, the study aims to analyze the implementation of interactive learning reading, writing, arithmetic based on android applications. The test was run by measuring the influence between variables in the TAM model, which labelling as Perceived Ease of Use, Perceived Usefulness, and Attitude towards Using Technology, Behavioral Intention to Use and Actual Technology Use. The data in this study were obtained from questionnaires which filled out by the respondents. The data analyzed with Structural Equation Modeling approach based on Partial Least Square (PLS-SEM) by using the SmartPLS application. The stages of data analysis started from designing the structural model, designing the measurement model, evaluating the measurement model, evaluating the structural model, and testing the hypothesis. From the research results based on the seven proposed hypotheses, there are six hypotheses declared accepted and one hypothesis rejected.

Analisa Efektifitas Perbaikan Perangkat BTS Telkomsel Karawang dengan iManager u2000 software

Recently, the need for cellular telecommunication services in Indonesia being a very large number. The customer growth rate must be supported with the infrastructure development. PT. Telkomsel (one of the provider) has its own way of balancing customer needs with infrastructure development, namely building BTS or Base Transceiver Station. This solution has a negative impact, which affected the PT. Telkomsel loses revenue or loss profit if the BTS experiences damage or interference as a result of continuous use. To reduce this profit loss value, PT. Telkomsel carries out scheduled maintenance or maintenance activities on BTS devices. Based on these problems, the practical work carried out by the author aims to find out and understand the repair or repair procedures on computerized BTS devices at PT. Telkomsel, Karawang. The result of practical work activities is that it is known that the application of a computerized system at PT. Telekomunikasi Selular GraPaRi Karawang helps the process of repairing BTS devices in meeting information needs. To monitor damage to BTS equipment, it is done by means of an alarm monitoring system using the iManager u2000 software.