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Leonardus Sandy Ade Putra
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telectrical@untan.ac.id
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Jl. Prof. Dr. Hadari Nawawi, Pontianak 78124, Indonesia
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INDONESIA
Telecommunications, Computers, and Electricals Engineering Journal
Published by Universitas Tanjungpura
ISSN : -     EISSN : 30260744     DOI : https://dx.doi.org/10.26418/telectrical.v1i2
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Signal Processing; Communication Networks; Artificial Intelligence, Computer Technology; Power Systems; Image Processing
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 5 Documents
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Search results for , issue "Vol 3, No 2: October 2025" : 5 Documents clear
Design of Active Analog Subwoofer Crossover Filter Linkwitz Riley 24 in Audio System Hizkia, Dave Adonia; Suryadi, Dedy; Marindani, Elang Derdian
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 3, No 2: October 2025
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v3i2.97440

Abstract

The quality of an audio system is greatly influenced by the accuracy of frequency distribution, especially in the low-frequency range managed by the subwoofer. To achieve optimal separation, this study presents the design and implementation of a fourth-order active analog Linkwitz"“Riley crossover filter (LR24) for subwoofer applications. The LR24 topology was selected for its ability to provide smooth and symmetrical frequency transitions with a 24 dB/octave slope. The research covers filter and preamplifier design, component selection, and performance evaluation using pink noise. Measurements were carried out through spectrogram analysis, frequency spectrum observation, and oscilloscope testing. The resulting filter achieved a cutoff frequency of 126.8 Hz with an attenuation slope of 24 dB/octave at 249.4 Hz, effectively reducing high-frequency signals. Comparative analysis with fourth-order digital Butterworth and Bessel filters on the DBx 260 demonstrated that the proposed analog design delivers competitive performance. This work highlights that an analog LR24 filter built from basic components and general-purpose op-amps can serve as a reliable and cost-effective alternative to digital solutions in low-frequency audio processing, although its performance is still constrained by the limitations of standard op-amps compared to audio-grade devices.
Monitoring the Difference in Electrical Energy Between Communal Houses and Substations with Remote Communication Technology and the Internet of Things Hidayat, Fahrizal Mufti; Marpaung, Jannus; Abidin, Zainal
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 3, No 2: October 2025
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v3i2.83979

Abstract

Electrical energy distribution systems are essential for modern life, especially in communal homes that use energy significantly. Monitoring and measuring the difference in electrical energy between pole substations and communal houses is important for cost efficiency and environmental sustainability to avoid misunderstandings between customers and electrical energy providers. Therefore, remote communication technology and the Internet of Things allow in real-time and accurate monitoring. In this study, the stages of collecting electricity parameters were carried out. The method of observing electrical power uses a current sensor (SCT-013) and a voltage sensor (ZMPT101B). The ESP32 microcontroller is used in measurement systems and as a link to the internet connection via a Wi-Fi network. The measurement data is stored in the data logger with txt format. The Internet of Things media platform used is a website-based Thinger.io. The test results show that long-distance energy difference monitiring can be done and send the parameters of voltage, current, power and energy in the form of kWh by Tx_1, Tx_2, Tx_3 and Rx to the thinger.io with periods every 5 seconds alternately. Then data was taken and the value for the total current was 5.66 A, the total power value was 1077.66 W, the energy value at the source was 10.78 kWh, so that the energy difference value from the three transmitters and the source was 0.18 kWh with an error value in the energy difference of 1.704%.
Simulation of FTTH (Fiber To The Home) Access Network Model with Optisystem on the Ngabang STO Link Pangalayo, Jhoni David; Imansyah, Fitri; Suryadi, Dedy
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 3, No 2: October 2025
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v3i2.97187

Abstract

In the rapidly evolving digital era, the demand for super-fast internet continues to increase. FTTH (Fiber To The Home) is a solution with fiber optics that provides a direct connection to the customer's home, offering high bandwidth and stable internet speeds. This study simulates an FTTH access network using Optisystem software to evaluate network feasibility through parameters such as power link budget, rise time budget, BER, and Q-Factor. The simulation results show excellent network performance, with minimal difference between the calculation and simulation results, especially at the downstream side receiver attenuation value (Prx). All grades still meet the set eligibility standards. Testing of the rise time budget with NRZ coding shows results below the specified limits. The analysis of the eye diagram on the BER Analyzer shows excellent acceptability quality with a wide eye-height opening. The performance of the FTTH network is rated as excellent based on the results of calculations, simulations, and direct measurements in the field, although there are slight differences caused by factors such as safety margin values and attenuation of network components. In conclusion, simulations using OptiSystem are effective in measuring and ensuring the feasibility of FTTH access networks.
Analysis Water Pump Control System Using PID Based on PLC and HMI Rachmawati, Angraini; Marindani, Elang Derdian; Sanjaya, Bomo Wibowo
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 3, No 2: October 2025
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v3i2.97489

Abstract

The liquid"™s level is given particular notice, whereby the liquid"™s level is maintained at a certain level to meet the volume requirement. The implementation liquid level control system involves the use of water pumps in water supply management at Selat Panjang, Pontianak. The water in reservoir must be maintained in a specific level range. If the water is too high or too low, it will significantly affect the reliability and safety of the pumps. Water level control in a reservoir is carried out by adding a controller to the system. The control equipment used is a PLC (Programmable Logic Controller). Then, mathematical calculations will be carried out using MATLAB. Calculations are carried out using 3 methods, namely the manual method, the Ziegler"“Nichols method, and auto-tuning method. When applying the three methods to the system, the observed manual method demonstrated stability with a P value of 1, I value of 20, and D value of 25, approaching the setpoint at 2.21 meters with an error of ±1.1 meters. The Ziegler"“Nichols had the longest rise time but achieved the water level close to the setpoint with an error of ±0.1 meter. The auto-tuning method exhibited a relatively fast rise time of approximately 1 minute and 20 seconds. However, the water level increasingly deviated from the desired setpoint. Implementation results concluded that the Ziegler"“Nichols is the most suitable for the system. This research is expected to enhance the efficiency, safety, and reliability of the pump usage at Perumdam Tirta Khatulistiwa.
Study of Elelctrical Installation Planning at Lecture Building of Widya Dharma University Pontianak Amalia, Nabila Rizki
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 3, No 2: October 2025
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v3i2.98184

Abstract

As the population grows, the need for educational facilities increases. Therefore, Widya Dharma University Pontianak (UWDP) has developed a new 10-story building with a total floor area of 4,016 m ². The operation of the lecture building will inevitably involve the use of electrical energy. The primary function of electrical energy is to meet the needs of learning facilities, services, and the comfort of all building users to ensure smooth academic activities. This study employs a literature review and descriptive analytical method. During the planning process, several calculations were performed, including determining lighting requirements using DIALux Evo software, cross-sectional area of conductors, current rating of circuit breakers, and a cost estimate (RAB). Based on the calculations and analysis conducted, the number of light points required in each classroom is 16 points, with a total power of 336 Watts. The type of conductor used is NYM 2 × 2.5 mm ² with a fuse rating of 4 Amperes. The total cost of the entire electrical installation work in the classrooms is IDR 45.817.000,00. From this study, it is hoped that an electrical installation plan compliant with SNI 6197 2020, PUIL 2020, and PLN standards can be developed, ensuring efficient and effective use of electrical energy in the academic building while providing comfort for building users.

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