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Elektrika

elektrika
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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 122 Documents

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Rancang Bangun Electronic Couter Dengan Control Display Muhajirin Wibowo, Ahmad
eLEKTRIKA Vol 9, No 2 (2017): Oktober 2017
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/elektrika.v9i2.1162

Perkembangan dunia medis saat ini tingkat efisiensi waktu dan ketelitian sangat menentukan, salah satu alat penunjang di bidang peralatan kedokteran adalah electronic couter, yang digunakan pada saat tindakan khitan dan pemotongan/ cutting. Tujuan penggunaan alat ini adalah untuk mengurangi atau meminimalisir perdarahan, tanpa jahitan,Â dengan nilai estetika lebih baik, karena pembuluh darah yang terbuka di daerah luka langsung dapat ditutup. Sebelum ditemukannya alat ini, teknik pembedahan dilakukan hanya dengan menggunakan instrumen konvensional, yaitu berupa pisau bedah. Dampak penggunaan instrumen ini dapat mengakibatkan pendarahan pada saat dilakukan tindakan pembedahan. Berdasarkan latarbelakang tersebut penulis ingin membuat alat electronic couter yang mampu memudahkan dokter khitan dalam pekerjaannya. Dengan interactive Control Display, alat ini mampu menampilkan suhu panas pada filament prob logam yang akan digunakan untuk tindakan pemotongan jaringan kulit.Â Kata Kunci :Electronic Couter, Cutting, Control DisplayÂ

RANCANG BANGUN ROBOT PEMADAM API BERODA DENGAN NAVIGASI SENSOR KOMPAS BERBASIS ATMEGA 128 Nurul hilal, Yusuf; Heranurweni, Sri; Kurniawan N, Andi
Elektrika Vol. 9 No. 1 (2017): April 2017
Publisher : Universitas Semarang

CMPS03 an electronic compass sensor navigation sensor that helps in determining the direction toward the robot and in tracing the wall or room that works according to the principle of the compass in general. CMPS03 electronic compass sensor has two sensors that will detect ferrous magnetic Earth's magnetic field and also has a range of angles 360Ëš, the resulting data is then sent to the microcontroller Keywords: Compass Sensor, Robot, and Microcontroller.

PEMODELAN SISTEM PEMBANGKIT HYBRID ENERGI SOLAR DAN ANGIN Harmini, Harmini; Nurhayati, Titik
Elektrika Vol. 10 No. 2 (2018): Oktober 2018
Publisher : Universitas Semarang

Hybrid energy system is to combine two energy sources that will provide power to the load. Sources of solar energy and wind energy will be used to generate power. In this research will be designed a model of hybrid system of solar energy and wind energy. The system is made equipped with energy storage systems in the form of batteries. Simulation or modeling using a circuit with components appropriate to the field application. Analysis of this system is the performance of hybrid generator characteristics based on load changes in the form of voltage, current and power values. The power generated by the PLTS is 3,000 Watts and the wind generator is 1,000 Watt with a resistive load of 4,000 Watt. Hybrid system generates a power of 2640 Watt so that the efficiency of hybrid system by 66%Keywords: Hybrid system, wind energy, solar energy

DESAIN SISTEM POMPA AIR SOLAR PHOTOVOLTAIC (SPV) 125 WATT DI DESA RAMBAT, KECAMATAN GEYER, KABUPATEN GROBOGAN Harmini, Harmini; Nurhayati, Titik
Elektrika Vol. 10 No. 1 (2018): April 2018
Publisher : Universitas Semarang

In this research will be designing a prototype of a water pump system using solar photovoltaic (SPV) that is designing a SPV in accordance with the needs of PV with the capacity of water pump. The power generated by the photovoltaic system will be used to drive the water pump. One of the areas in Central Java region that have not received water source is Dusun satreyan, Rambat Village Geyer Subdistrict Grobogan District. The solar photovoltaic (SPV) water pump system is de-signed using SPV panels, Solar Charge Controller, Battery and Inverter for the needs of 1 family head with water capacity per day is 300 Liter. The water pump capacity is 125 Watt, the number of SPV panels of 2 each with a capacity of 100 Wp, battery capacity, solar charge controller and inverter is 60 Ah, 10.42 Ampere and 12 volts DC 220 VAC. The average effi-ciency rating of the SPV water pump system as a whole is 61.18%Keywords: MPPT,Solar Photovoltaic, Tracking.

RANCANG BANGUN SYRINGE PUMP Falista M, Hafidz
eLEKTRIKA Vol 9, No 2 (2017): Oktober 2017
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/elektrika.v9i2.1163

Â Syringe pump is a tool for inserting high-dose drug fluids given to patients. The accuracy and accuracy of the amount of fluid given to this device is quite high. The need for this tool in hospitals is very large, but in terms of the economy the price of the equipment is still very expensive so it is not affordable to small hospitals. The purpose of making a syringe pump is to be able to meet the needs of the syringe pump in small hospitals so that it can save on budget expenses. Therefore a syringe pump is designed, designed using the Arduino Nano as a control system, display flow speed with 16x2 LCD, stepper motor as a syringe booster according to the regulated flow speed, and buzzer as an alarm when a blockage occurs and the syringe placement is incorrect. Flowrate parameters at a speed of 10 ml / hour, 20 ml / hour, 30 ml / hour, 40 ml / hour and 50 ml / hour.Keywords: Syringe Pump, flowrate, stepper motor, Arduino NanoÂ

SIMULASI PENGATURAN KECEPATAN MOTOR INDUKSI 3 PHASA DENGAN DIRECT TORQUE CONTROL MENGGUNAKAN MATLAB Khasanah, Ulfatun; Supari, Supari; Heranurweni, Sri
Elektrika Vol. 9 No. 1 (2017): April 2017
Publisher : Universitas Semarang

Induction motors are widely used in the industrial world because they have many advantages, including construction that is very simple and strong, cheap, has high efficiency, quite good power factor, and maintenance is easier. Besides the advantages of induction motors also have weaknesses, one of the disadvantages of an induction motor is not being able to maintain its speed constantly if there is a change in load. If there is a change in load, the speed of the induction motor will decrease. One method of regulating the speed of an induction motor developed in addition to vector control is the Direct Torque Control (DTC) method. The DTC control technique allows direct and separate flux and torque settings and can be done without using a speed sensor. The estimated rotor rotation, torque and flux is carried out by the DTC which is inputted with stator voltage and current. To achieve the desired flux and torque estimation is used as feedback on the control system. In this final assignment, the speed regulation of the induction motor will be simulated using the DTC method using Matlab. The results obtained through the simulation show the length of time to reach the reference speed for speeds of 500rpm and 1000 rpm is around 0.5 seconds. Keywords : Induction motor, Direct Torque Control, Matlab.

VISUALISASI KONSEP PERLAYANGAN GELOMBANG DENGAN MEMANFAATKAN SPREADSHEET EXCEL Dwi Handayani, Iryan; Margiantono, Agus; Ahmad, Fahrudin
Elektrika Vol. 10 No. 2 (2018): Oktober 2018
Publisher : Universitas Semarang

Perkembangan ilmu pengetahuan dan teknologi yang semakin maju telah menghasilkan berbagai macam peralatan canggih yang dapat menunjang terpenuhinya kebutuhan hidup. Oleh sebab itu diperlukan generasi penerus yang pandai dan kreatif. Hal ini yang menyebabkan kebutuhan pendidikan yang semakin tinggi dan permasalahannya semakin kompleks. Pembelajaran tentang gelombang sudah didapatkan sejak duduk di bangku SMP, tetapi pemahaman tentang hal ini masih kurang. Oleh karena itu, dengan memanfaatkan fasilitas-fasilitas yang diberikan komputer, perumusanperumusan gelombang elektromagnetik yang abstrak akan lebih mudah dipahami. Visualisasi dari grafiknya dapat memberikan kemudahan bagi mahasiswa untuk lebih memahami materi yang diberikan. Penelitian ini dilaksanakan dalam dua tahapan, tahapan yang pertama dimulai dari studi pustaka pendukung terutama yang berkaitan dengan superposisi gelombang. Langkah selanjutnya adalah menurunkan rumusan superposisi dua gelombang dengan variasi frekuensi, amplitudo, dan fase yang berbeda-beda. Tahapan kedua yang dilakukan hampir sama dengan tahapan pertama yaitu studi pustaka, namun cukup dengan memperoleh fungsi gelombang tunggal. Selanjutnya berdasarkan fungsi gelombang dengan variasi frekuensi, amplitudo, dan fase. Proses superposisi gelombang dilakukan dengan cara menjumlahkan data sintetik fungsi gelombang 1 dan 2, menghasilkan data sintetik fungsi gelombang hasil superposisi. Data sintetik ini kemudian divisualisasikan dalam bentuk grafik Penelitian ini menghasilkan visualisasi konsep perlayangan gelombang yang diungkapkan dalam grafik hubungan antara simpangan terhadap waktu dengan frekuensi berbeda, amplitudo dan beda fase yang berbeda. Kata kunci : perlayangan gelombang, superposisi, spreadsheet

Analisa Citra Medis Pada Pasien Stroke dengan Metoda Peregangan Kontras Berbasis ImageJ Destyningtias, Budiani; Kurniawan N, Andi; Heranurweni, Sri
Elektrika Vol. 10 No. 1 (2018): April 2018
Publisher : Universitas Semarang

Penelitian ini bertujuan mengembangankan teknologi pengolahan citra medis terutama citra medis CT Scan penderita stroke. Dokter dalam menentukan tingkat keparahan pasien stroke biasanya menggunakan citra medis CT scan dan mengalami kesulitan dalam menginterpretasikan luasan cakupan perdarahan.Solusi yang digunakan dengan peregangan kontras yang akan membedakan jaringan sel, tulang tengkorak dan jenis perdarahan. Penelitian ini menggunakan peregangan kontras dari hasil citra CT Scan yang dihasilkan dengan terlebih dahulu mengubah Citra DICOM menjadi citra JPEG dengan menggunakan bantuan program ImageJ. Hasil penelitian menunjukkan bahwa metode histogram ekualisasi dan analisis tekstur statistik dapat digunakan untuk membedakan yang normal MRI dan abnormal MRI yang terdeteksi stroke. Kata Kata Kunci : Stroke, MRI , Dicom, JPEG, ImageJ, Peregangan Kontras

SISTEM MONITORING PENGENDALI DAN PENGHITUNG WAKTU PADA DRAG RACE BERBASIS MIKROKONTROLER AT MEGA 8535 Bangun Marhendra, Vendi; Heranurweni, Sri
eLEKTRIKA Vol 9, No 2 (2017): Oktober 2017
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/elektrika.v9i2.1164

In a drag race, which is often held by race organizers. The process of determining the jump start and determining who crosses the first finish line still relies on human monitoring. Manually recording (stopwatch) is not enough because there are many inhibiting factors, including: operator, start theft by drivers, recording results, damage to the stopwatch and others. The drag race is often held during the day. The hot weather will cause someone to get tired quickly, in this case it is aimed at the person who is the operator who monitors the theft of the start and the operator at the finish line because the person is in the middle of a very hot track. Based on the reasons mentioned above, it is necessary to have a controller and timer system on the ATMega8535 microcontrollerbased drag race. Making this tool will facilitate the work of humans in obtaining information in the racing arena that does not allow humans to do it manually, so that accurate data is obtained.Keywords: Atmega 8535 microcontroller, jump start, stopwatch

EVALUASI INSTALASI LISTRIK PADA GEDUNG MULTI CENTRE OF EXCELLENT (MCE) RUMAH SAKIT ISLAM SULTAN AGUNG SEMARANG Wahyu Pramon, Eko; Karnoto, Karnoto; Nurhayati, Titik
Elektrika Vol. 9 No. 1 (2017): April 2017
Publisher : Universitas Semarang

MCE Building Sultan Agung Islamic Hospital Semarang is a public facility that requires an electrical installation system that is in accordance with PUIL 2000. The purpose of evaluating electrical installations at the Multi Center of Excellent (MCE) building in Sultan Agung Semarang Islamic Hospital is to find out electrical installations in accordance with PUIL 2000 Evaluation of electrical installations includes calculation of MCB security and calculation of cable size. Calculation using manual calculation method and calculation using Ecodial Calculation 4.7 software. The calculation results are then compared to the installed units. From the results of the comparison it can be seen whether the electrical installation is in accordance with PUIL 2000. The results of the analysis can be concluded that the electrical installation system in the MCE building of Sultan Agung Semarang Islamic Hospital is in good condition and safe. In MCB installed units, they are in accordance with the PUIL 2000 standard. In the cable sizes installed several are in a condition not in accordance with the PUIL 2000 standard so cable replacement is required. For example, on the 1st floor divider panel SDP cable where the installed cable is 4x35 mm2, it is replaced by 4x95 mm2.Keywords: Evaluation of Electrical Installation, PUIL 2000, Ecodial Advance Calculation 4

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