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Elektrika
Published by Universitas Semarang
ISSN : 20850565     EISSN : -     DOI : -
Core Subject : Engineering,
Electrical & Electronics Engineering
Jurnal eLEKTRIKA diterbitkan oleh Jurusan Teknik Elektro, Fakultas Teknik, Universitas Semarang sejak tahun 2009, dan terakreditasi oleh Kementerian Ristekdikti pada tanggal 29 Januari 2009, dengan No. ISSN 2085-0565. Jurnal eLEKTRIKA adalah jurnal open akses dengan pelibatan mitra bebestari (peer-reviewed yang terbit dua kali dalam setahun, Maret dan Oktober.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 11, No 2 (2019): Oktober 2019" : 6 Documents clear
PREDIKSI BEBAN ENERGI LISTRIK APJ KOTA SEMARANG MENGGUNAKAN METODE RADIAL BASIS FUNCTION (RBF) Mukti Dwi Cahyo; Sri Heranurweni; Harmini Harmini
Elektrika Vol 11, No 2 (2019): Oktober 2019
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (696.005 KB) | DOI: 10.26623/elektrika.v11i2.1699

Abstract

Electric power is one of the main needs of society today, ranging from household consumers to industry. The demand for electricity increases every year. So as to achieve adjustments between power generation and power demand, the electricity provider (PLN) must know the load needs or electricity demand for some time to come. There are many studies on the prediction of electricity loads in electricity, but they are not specific to each consumer sector. One of the predictions of this electrical load can be done using the Radial Basis Function Artificial Neural Network (ANN) method. This method uses training data learning from 2010 - 2017 as a reference data. Calculations with this method are based on empirical experience of electricity provider planning which is relatively difficult to do, especially in terms of corrections that need to be made to changes in load. This study specifically predicts the electricity load in the Semarang Rayon network service area in 2019-2024. The results of this Artificial Neural Network produce projected electricity demand needs in 2019-2024 with an average annual increase of 1.01% and peak load in 2019-2024. The highest peak load in 2024 and the dominating average is the household sector with an increase of 1% per year. The accuracy results of the Radial Basis Function model reached 95%.
RANCANG BANGUN PROTOTYPE SMART HOME DENGAN KONSEP INTERNET OF THINGS (IOT) MENGGUNAKAN RASPBERRY PI BERBASIS WEB Bagus Eryawan; Ari Endang Jayati; Sri Heranurweni
Elektrika Vol 11, No 2 (2019): Oktober 2019
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (609.102 KB) | DOI: 10.26623/elektrika.v11i2.1691

Abstract

High economic growth makes the demand for comfortable and safe houses increase and the application of technology that is most clearly seen is technology with automatic systems. With this technology, the use of electricity in the house can be minimized and offer convenience in controlling the house. Sometimes homeowners forget to turn off the lights when they are outside the house so they have to go back and do checks that are very inefficient both in terms of time and financially such as the cost of gasoline to return to the house. Based on this, the Smart Home Prototype was created with the concept of the Internet of Things (IoT) using Raspberry Pi Web-Based, which is a system that can remotely control electronic home appliances using Raspberry Pi as a base system, which is connected to Web Applications through the internet network. The electronic equipment used in this study is in the form of 5 lamps, 1 stepper motor to control the garage, 1 servo motor to control the door lock, and 1 brushless motor that functions as a fan. Blocking and overall test results on Bedroom Lights, Living Room Lights, Kitchen Lights, Bathroom Lights, Porch Lights, Garages, Door Locks, and Fans, all work well. The testing of the distance between cities against the Prototype Smart Home was successfully carried out, where the Prototype Smart Home in the City of Demak was successfully controlled by the User who at the time of testing was in the City of Semarang, Kudus, Japan, Surabaya, and Jakarta.
RANCANG BANGUN BANTAL TERAPI BERBASIS ARDUINO Diah Rahayu Ningtias; Made Putra Sudarma; Imam Tri Harsoyo
Elektrika Vol 11, No 2 (2019): Oktober 2019
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/elektrika.v11i2.1706

Abstract

One form of physiotherapy is utilizing heat for recovery. Heat therapy can open blood vessels wider, thereby increasing blood flow and supply of oxygen and nutrients to reduce pain in joints, muscles, ligaments and injured tanks. To help health services in the field of physiotherapy the author modifies the therapeutic pillow with Arduino Uno and DS18B20 based as a temperature sensor, LCD as a temperature viewer and a timer and button that functions to choose how long it takes to do therapy. The design of therapeutic pillows is divided into two, namely hardware and software design, hardware design including power supply, a series of drivers and system scenarios. While the software design of this tool uses the Arduino and proteus applications as software. The result of the percentage error at the TP2 measurement is 0.02%. The measurement results on TP3 when the tool is off or off, then the circuit does not get a voltage while when the device is turned on or on the driver circuit gets a voltage of 1.4 Volt. After making the process of making, testing, testing tools and data collection, the author has succeeded in designing a heat therapy pillow using a temperature sensor and ARDUINO UNO based timer controller that can provide convenience when going to heat therapy because it is equipped with an automatically controlled temperature sensor and controller timer. by DS1820 temperature sensor. A therapeutic pillow based on Arduino with 10 minutes of therapy results in a temperature of 41°C. 
RANCANG BANGUN TACHOMETER DIGITAL BERBASIS ARDUINO DILENGKAPI CHARGING DAN MODE PENYIMPAN DATA Imam Tri Harsoyo; Andi Kurniawan Nugroho; Nuriman Nuriman
Elektrika Vol 11, No 2 (2019): Oktober 2019
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (623.74 KB) | DOI: 10.26623/elektrika.v11i2.1692

Abstract

A good and feasible centrifuge is needed in the world of health, therefore a digital tachometer is needed to calibrate a centrifuge. Digital tachometer is a measuring instrument used to measure the rotation speed of a motor. This tachometer will be tested to function by being compared to using Digital Laser Photo Tachometer. This tachometer will display the number of rotations per minute of a motor according to the speed setting on the centrifuge using the output of this E18-D80NK sensor which will later be processed by the Arduino Nano. As for this feature charger and data storage mode, so that user can save the data of measurement results on SD Card, and beside that user can also be a way of charging when after usage or before usage. At testing the tool used point settings 1000, 2000, 3000, 4000, 5000, and 12000 RPM. Based on the measurement results of centrifuge using tachometer module and comparison tachometer have average percentage of error varying at each setting point. The smallest error 0.8% at the setting Point 3000 RPM, while the largest error 4.9% at the setting point 1000 RPM. The Tacometer error value on this Centrifuge measurement is still within the tolerance limit of ± 10%
PENGUAT KELAS D DENGAN METODE SUMMING INTEGRATOR Budihardja Murtianta
Elektrika Vol 11, No 2 (2019): Oktober 2019
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (828.547 KB) | DOI: 10.26623/elektrika.v11i2.1693

Abstract

A class D amplifier is one in which the output transistors are operated as switches. When a transistor is off, the current through it is zero and when it is on, the voltage across it is small, ideally zero. Thus the power dissipation is very low, so it requires a smaller heat sink for the amplifier. Class D amplifier operation is based on analog principles and there is no digital encoding of the signal. Before the emergence of class D amplifiers, the standard classes were class A, class AB, class B, and class C. The classic method for generating signals driving a transistor MOSFET is to use a comparator. One input is driven by an incoming audio signal, and the other by a triangle wave or a sawtooth wave at the required switching frequency. The frequency of a triangular or sawtooth wave must be higher than the audio input. MOSFET transistors work in a complementary manner that operates as a switch. Triangle waves are usually generated by square waves fed to the integrator circuit. So the main part of processing audio signals into PWM (Pulse Width Modulation) is the integrator and comparator. In this paper, we will discuss the work of a class D amplifier system using the summing integrator method as its main part.
ANALISA SISTEM KERJA PERANGKAT AKTIF PT. TELKOM AKSES Andika Singgih Prasetyo; Erlinasari Erlinasari
Elektrika Vol 11, No 2 (2019): Oktober 2019
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (698.25 KB) | DOI: 10.26623/elektrika.v11i2.1694

Abstract

Penelitian ini bertujuan untuk mengetahui bagaimana sistem kerja di PT. Telkom Akses karena setelah penulis menganalisa sistem perangkat aktif  PT. Telkom Akses, terdapat banyak manfaat bagi pelanggan ketika mereka mengalami kerusakan atau gangguan pada jaringan internet. Objek penelitian dalam penelitian ini yaitu system perangkat aktif PT. Telkom Akses. Pengumpulan data dilakukan dengan Studi lapangan yang meliputi wawancara dan pengamatan secara langsung serta Studi kepustakaan berdasarkan pada literatur terkait objek penelitian. Penulis hanya membahas dan menganalisa perangkat MSAN (Multi Service Access Node) saja. Hasil dari analisa tersebut adalah MSAN merupakan perangkat aktif karena mengaktifkan jaringan internet dan telepon sebelum ke pelanggan. Perangkat ini bergantung pada suplai listrik dari pln dan mendapat jaringan dari metro Ethernet menggunakan kabel FO (fiber optic)

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