Circuit: Jurnal Ilmiah Pendidikan Teknik Elektro

The Application of AVR Codevision Software in Microprocessor and Microcontroller Programming Subjects at Muhammadiyah Vocational School Banda Aceh

Malahayati Malahayati, Amien Refnas Rais, Muhammad Rizal Fachri, Akhyar Akhyar — Tue, 07 Jan 2025 08:35:08 +0800

The rapid development of technology in the field of automation has emphasized the importance of understanding microprocessor and microcontroller programming among students. This research aims to investigate the influence of applying CodeVision AVR software on the learning outcomes of 11th-grade TAV students at SMK Muhammadiyah Banda Aceh. The CodeVision AVR software has the CodeWizard AVR feature, which makes it easier for beginners to create programs. This research uses the Classroom Action Research method with 3 cycles, and the research sample consists of 11th-grade TAV students. Data collection techniques include pre-tests, post-tests, group tests, and documentation. The research results show that the application of learning using CodeVision AVR software can improve students' learning outcomes. This can be seen from the average score obtained at the end of cycle III with an average score of 81.25. Meanwhile, in the group exam, the average score is 95.75. It can be concluded that there is an improvement in students' understanding and skills in the material taught through the AVR Application

Test Hybrid PV System Performance Against Load Variations

Tue, 07 Jan 2025 08:35:08 +0800

The depletion of fossil fuels has driven significant changes in the global electricity system. Solar Power Plants (PLTS) as a renewable energy source have shown the potential to contribute up to 25% of global electricity generation by 2050. The electricity system often experiences disturbances that can affect its performance and reliability. This study examines the performance of a 1.2 kW hybrid PV system under various load conditions. The system was tested with load variations of 2%, 7%, 22%, and 26% to assess its efficiency and performance. Despite a slight voltage drop of 4V Vac (-1.82%) at higher loads, the hybrid PV system consistently maintained a voltage range of 216-220V Vac, which meets the standard requirements. The system demonstrated high efficiency, averaging over 95%, with a peak efficiency reaching 98.5% at 2% load. These results confirm the effectiveness, safety, and reliability of the system under various load conditions. The findings are based on direct testing and measurements of a 1.2 kW hybrid PV system to evaluate the impact of load variations on its performance. The 1.2 kW hybrid PV system has been proven to be effective, safe and reliable in the face of load variations. These findings support the potential implementation of hybrid PV systems as a future renewable energy solution in the electricity sector

Design and Development of a Monkey Repellent Device Based On Ultrasonic Waves at the Engineering Prayer Room, Malikussaleh University

Aldi Fadilah Isma, Kartika Kartika, Asran Asran, Misriana Misriana — Tue, 07 Jan 2025 08:35:08 +0800

The presence of wild monkeys in the Engineering Prayer Room at Malikussaleh University has become a severe problem for cleanliness and worship activities. Monkeys often damage equipment and disturb the comfort of pilgrims, causing material losses and threatening environmental cleanliness. Traditional methods to repel monkeys have proven ineffective for a long time, so technological solutions such as ultrasonic waves are needed. This study looked at the effects of using various ultrasonic frequencies on monkeys at multiple distances to determine their effective range of distraction. The results show higher frequencies cause more significant interference, especially at close range. At 23 kHz and 26 kHz, monkeys were only disturbed at a distance of 1 and 2 meters, without disturbance at 3 and 4 meters. The frequencies 29 kHz and 32 kHz show interference at a distance of 1 and 2 meters, with variations at 29 kHz at 3 meters. At 35 kHz, the monkeys were highly disturbed at 1 meter, disturbed at 2 meters, and slightly disturbed at 3 and 4 meters. The 38 kHz and 41 kHz frequencies cause significant interference at 1 and 2 meters, and interference is still felt at 3 and 4 meters. Thus, using frequencies above 30 kHz has proven effective in driving away monkeys up to a distance of 4 meters, with the highest intensity of interference at a distance of 1 to 2 meters. It is hoped that using ultrasonic technology can maintain cleanliness, safety, and comfort in prayer activities in prayer rooms and demonstrate commitment to sustainable and environmentally friendly solutions.

Programmable Logic Controller Analog Input Learning Module: An Expert-Based Evaluation

Tue, 30 Dec 2025 00:00:00 +0800

This study aims to validate the analog input learning module of programmable logic controller (PLC). This module was developed using the OMRON CP1H PLC type which has analog input and analog output configurations. Scientific studies on the quality standards of learning modules are the basis for the development of this instrument. The content validity test was carried out by evaluation experts, while media and material experts evaluated the printed media and PLC material aspects. The results of the study showed an assessment of the media side with an average score of the format aspect of 14.5, the organizational aspect of 27.5, the shape and size of the letters of 13.0, and the consistency aspect of 29.5 which was categorized as "Very Eligible", while the average score of the attractiveness aspect was 22.0 and the space aspect of 12.5 was categorized as "Eligible". The assessment results from the material side with an average score of the self-instruction aspect of 57.0, the adaptive aspect of 6.5, and the user-friendly aspect of 14.0 which is categorized as "Very feasible", while the average score of the self-contained aspect of 13.5 and the stand-alone aspect of 6.5 is categorized as "Eligible". This module is considered feasible for learning PLC analog input with satisfactory assessment results.

Analysis of the Potential for Wind Power Generation in the Cermin Beach Area as An Energy Reserve

Purnama Helena T Hutabarat, Darma Yanti — Fri, 17 Jan 2025 00:00:00 +0800

The potential for wind energy in the Pantai Beach Team Park, Deli Serdang Regency, North Sumatra, as an alternative energy for PLTB (Wind Power Plant) is very possible. Looking at the geographical location and average wind speed at this location, this location has the potential to build a PLTB. To get more precise and accurate design results, help from the HOMER application is needed. Where the application used will help to design and determine the PLTB capacity that is capable of carrying the calculated load. In this research, wind power plant (PLTB) planning will be carried out at the research location, namely the tourist area of PT. Serdang Bedagai Cermin Beach. The planning carried out includes technical analysis of PLTB planning which will supply the existing load. The wind speed at the research location was relatively small, namely the largest occurred in December with a speed of 3.18 m/s. while the average wind speed at the research location is 2.63 m/s, the mass flow rate is 133.46 kg/s, the potential power is 2001 watts, the efficiency power is 1600 watts and the system power is 18.9 Watts/m2 where this speed relatively small for the construction of a wind turbine or PLTB. To supply a kWh load of 1,144 kWh/day, a wind turbine with a capacity of 10 kW is needed as many turbines with an output power of 2001 watts per turbine.

Performance Analysis Of Centrifugal End Suction Pump And Three Phase Induction Motor In The Distribution Pumping Station of PDAM Tirta Mountala, Aceh Besar Regency

Thu, 23 Jan 2025 00:00:00 +0800

This study evaluates the efficiency performance of the motor-pump system used by the regional water utility company to identify strategies for improving efficiency. The three-phase induction motor utilized is highly dependent on the quality of the supplied voltage. The primary focus of this research includes analyzing the efficiency performance of the system, examining the electrical parameters of the three-phase induction motor, which include voltage and current imbalance, power factor, and Specific Energy Consumption (SEC). Another focus is the optimization of the motor-pump system and estimating the potential energy savings and operational cost reductions achievable within one year. The research method involves measuring electrical and hydraulic parameters. Electrical parameters were measured using a 3-phase power analyzer (type DW-6195), which records current, voltage, frequency, power, and power factor. Hydraulic parameters were measured using an electromagnetic flow meter for flow rate readings, a manometer for pressure measurements, and a measuring tape to measure the water level in the reservoir tank. All measurement results were tabulated and further analyzed to evaluate the performance of electrical parameters and compare them to the hydraulic performance of the system. The results revealed that the efficiency of the PDAM motor-pump system is below 50%, indicating the need for a comprehensive system revitalization. An inspection of electrical parameters showed that voltage deviation is below 10%, voltage imbalance is below 5%, and current imbalance ranges between 5.65% and 7.35%. All electrical parameters comply with IEEE standards. The power factor, at 0.85, also meets electrical standards. The SEC value, below 0.44 kWh/m³, indicates potential energy efficiency. Based on the pump performance curve study, the pump system can be replaced with a pump unit that has a lower electrical power rating, reducing it from 75 kW to 55 kW, while maintaining its hydraulic performance. Implementing this revitalization is expected to save up to 172,800 kWh of energy per motor per year and reduce by 18.4%.

Design and Construction of an Electric Whip for the Implementation of Criminal Law in Aceh

Faujan Faujan, Hari Anna Lastya, Muhammad Ikhsan — Mon, 24 Feb 2025 00:00:00 +0800

According to Qanun Jinayat, caning punishment in Aceh needs to be applied in a way that is both efficient and quantifiable. Designing an electric machine-based whipping device that controls the voltage (between 100 and 150 volts) according to the device's strength is the goal of the study. Using an experimental approach, this study displays the outcomes of 10 lashes at 100 volts for 10 seconds. It just takes 4.38 seconds at 150 volts. The punishments of khalwat (10–30 lashes), khamar (40–60 lashes), and zina (100 lashes) were used to test the system. The Aceh Jinayat law's concepts of justice and welfare are used to adjust the tension to the convict's circumstances. It is anticipated that this specially made whipping machine will be the most appropriate and compassionate way to administer caning punishment in Aceh. Therefore, this design provides a quantifiable, quick, and efficient method without disregarding the humanitarian element in Aceh's application of Islamic law.

Efficiency Analysis of PV with Composed Peltier as a Coolant

Fri, 01 Aug 2025 00:00:00 +0800

Kebutuhan akan energi ramah lingkungan semakin meningkat. Energi matahari menawarkan solusi berkelanjutan yang melimpah. Namun, efisiensi panel surya (PV) sering terhambat oleh panas berlebih. Hal ini dapat menurunkan kinerja konversi daya. Penelitian ini bertujuan untuk meningkatkan efisiensi PV dengan memanfaatkan sistem pendinginan berbasis efek Peltier sebagai solusi inovatif dalam mengatur suhu PV agar tetap stabil dan optimal. Metode yang digunakan dalam penelitian ini adalah eksperimen langsung dengan membandingkan dua kondisi operasional PV, yaitu dengan pendinginan Peltier dan tanpa pendinginan. Data yang dikumpulkan meliputi suhu PV, voltage (Vmp, VOC), arus (Imp), dan daya maksimum (Pmax) untuk setiap kondisi. Sistem pemantauan menggunakan perangkat seperti kamera pencitraan termal dan multimeter panel surya untuk mendapatkan hasil pengukuran yang akurat terkait dengan kinerja PV. Hasil penelitian menunjukkan bahwa sistem pendingin Peltier mampu menurunkan suhu PV secara signifikan, sehingga daya listrik yang dihasilkan oleh PV meningkat. Pada suhu yang lebih rendah, PV dengan pendinginan Peltier menunjukkan efisiensi daya yang lebih tinggi dibandingkan dengan PV tanpa pendinginan. Teknologi ini terbukti ramah lingkungan dan hemat energi, karena tidak memerlukan cairan pendingin atau komponen mekanis yang rumit. Sistem pendingin ini menawarkan alternatif berkelanjutan dalam manajemen suhu PV. Sistem ini dapat diterapkan secara luas untuk meningkatkan efisiensi energi panel surya dan mendukung penggunaan energi terbarukan yang optimal.

Prototype Design of Electronics Laboratory Door Security for PTE Department Using Arduino Nano Based E-KTP

Tutur Safaat, Hari Anna Lastya, Muhammad Rizal Fachri — Tue, 25 Feb 2025 00:00:00 +0800

The electronics laboratory of the PTE department still faces issues with conventional keys, limiting access control. To address this, a prototype door security system using e-KTP as an access key was developed through a quantitative experimental method. A system trial was carried out to evaluate the performance of the solenoid and LCD components. Seven e-KTP samples were selected using random probability sampling. The system was built using an ATmega328 microcontroller on an Arduino Nano, with RFID as input and LCD and solenoid as outputs. An admin card was designated to manage user access, including registration and deletion. Testing results revealed an authentication success rate of 87.5%. The distance and response time of RFID reading showed 85.71% accuracy, with a response time of under 2 seconds and a maximum effective scanning distance of 2.5 cm. Additionally, metal was identified as the main obstacle to RFID signal transmission, with a success rate of 83.33% when tested with barrier materials. These results demonstrate the effectiveness and feasibility of the e-KTP-based door security prototype for the PTE electronics laboratory

Evaluation of PDKB Performance's Impact on SAIDI SAIFI at PT. PLN UP3 Langsa

Muhazir Is, Tarmizi Tarmizi, Ramzi Adriman — Fri, 28 Feb 2025 00:00:00 +0800

The reliability of the electricity distribution system is essential to ensure continuous service to consumers. Maintenance is necessary to uphold this reliability. However, on the SUTM (Medium Voltage Overhead Line) network, maintenance often requires power outages, causing losses for both consumers and the company due to undelivered electrical energy (kWh). This study aims to analyze the SAIDI and SAIFI values, as well as the amount of kWh before and after implementing PDKB (Live Line Maintenance) at PT PLN (Persero) UP3 Langsa. The research uses a quantitative descriptive method with data collected through observation and analysis of kWh, SAIDI, and SAIFI metrics. The results show that PDKB-based maintenance saved 1,457,823.97 kWh with a financial gain of Rp. 1,135,391,541.48. The SAIDI and SAIFI values were 819.456 minutes/customer and 9.29 times/customer, respectively. In contrast, maintenance without PDKB resulted in a loss of 3,921,103.2 kWh or Rp. 3,136,882,560, with higher SAIDI and SAIFI values of 1533.84 minutes/customer and 10.04 times/customer. These findings indicate that lower SAIDI and SAIFI values reflect improved service quality, enhancing the company’s image and reducing losses from power distribution interruptions

Hospital Sterilization Room Door Interlock System Prototype Using Electric Contactors

Suhir Ardiansyah, Muhammad Rizal Fachri, Fathiah Fathiah — Sat, 01 Mar 2025 00:00:00 +0800

Controlling access to sterile hospital rooms can be effectively managed using a secure and reliable interlock system based on electrical contactors, which ensures that only one door is open at a time to prevent cross-contamination. This study aims to design and test a prototype of an interlock system for sterile room doors using an electrical contactor as the main controller. The research follows stages of design, testing, and performance evaluation. The system utilizes solenoid door locks controlled by contactors to automate door locking and opening. Testing focuses on measuring the output current of the contactors and the solenoid’s response time during door operations. Results show that contactor 1 outputs 7.63 mA, and contactor 2 outputs 7.64 mA. Solenoid door lock 1 has an average operating time of 0.80 seconds with a delay of 0.89 seconds, while solenoid 2 operates at 0.96 seconds with a 0.97-second delay. The system demonstrates stable performance and complies with sterile room safety standards. It is suitable for hospital implementation and can be further enhanced with remote monitoring and automatic alarm features to improve operational supervision