Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Journal of Educational Engineering and Environment Journal Electric Field
Firmansah, Arif
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Electric-Based Vehicle Control System with Modified Half-Wave Rectifier Circuit to Increase Battery Power Efficiency Firmansah, Arif; Mulyadi, Adi
Journal of Educational Engineering and Environment Vol. 2 No. 2 (2023): Journal of Educational Engineering and Environment
Publisher : Fakultas Teknik Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jeee.v2i2.3465

Abstract

This paper discusses electric-based vehicle control systems. Electric vehicle charging stations are only capable of charging based on slow, medium, fast, ultra fast charging and are not equipped with an overcharge system. So a control system is proposed for overcharge protection of battery current and voltage. The control system is modified with a half wave rectifier circuit to increase battery power efficiency. Method of modifying a half wave rectifier circuit with IC LM 7812 and capacitor. The results of the circuit modification show that the battery power is 7.96 w, 7.26 w, 6.60 w, 5.94 w, 5.24 w at varying input voltages of 220-200 Vac, and the efficiency is 0.87%-0.86% at an input voltage of 190-180 Vac. Meanwhile, the battery power is 7.96 w at an input voltage of 230 Vac and the efficiency is constant at 0.87%. The application of a control system can increase the efficiency of electricity-based vehicle batteries at a constant input voltage.
Sistem Automatic Exhaust Fan Menggunakan Sensor DHT11 Dan Sensor MQ-135 Untuk Mendeteksi Kualitas Udara Ruang Industri Agung, Dwi Julivan; Firmansah, Arif
Journal Electric Field Vol. 2 No. 2 (2025): Journal Electric Field
Publisher : CV. Sekawan Siji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63440/jef.v2i2.122

Abstract

Air quality has become a concern recently. Poor industrial indoor air quality has an impact on the number of deaths according to World Health Organization data. To reduce indoor air pollution, an autonomous exhaust fan system using DHT11 and MQ-135 sensors is presented. The design and experiment methods were carried out with a test variation of 1-10 minutes. The test results of each sensor showed that the average temperature was 26.8°C and humidity was 72%. Meanwhile, the MQ-135 sensor showed fluctuations in sensor resistance that were inversely proportional to the gas concentration (ppm). In the MQ-135 sensor test, a reference gas concentration value of 423.85 ppm was used to determine the accuracy of the sensor results. The detected gas concentration ranged from 402.9-469.8 ppm close to the reference value. The exhaust fan design system is recommended for office and industrial spaces to produce better indoor air quality.
Co-Authors Adi Mulyadi Agung, Dwi Julivan