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Aqmal, Faril
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Desain Rangkaian AC to DC Full Wave Rectifier Menggunakan IC LM338T Untuk Mengatur Output Tegangan dan Arus Aqmal, Faril
Journal Electric Field Vol. 1 No. 1 (2024): Journal Electric Field
Publisher : CV. Sekawan Siji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63440/jef.v1i1.17

Abstract

This paper discusses the design of a full-wave-rectifier AC to DC circuit using the LM338T IC to regulate voltage, current and output based on load variations. Load variations cannot be regulated using DC current and cause the load to vary. Therefore, a modification of the full wave rectifier circuit with IC LM338T is proposed for regulation based on load variations. The results show that variations in motor load produce voltage, current and power of 1.25 Vdc each, an output current of 0.10 A, and an output power of 0.12 watts. Using the LM338T IC can regulate the output voltage from 1.25–32 Vdc and a current of 5 A. If the load exceeds 5 A, the voltage will decrease and the resulting wave rectifier will experience distortion. So that the performance of the IC lasts longer, add a heat-sink to dissipate heat.    
Desain Sistem Pengapian Capacitor Discharge Ignition Menggunakan Proteus Berbasis Arduino Nano Untuk Meningkatkan Perfoma Sepeda Motor Aqmal, Faril
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.v2i2.121

Abstract

The traditional platinum ignition system produces lower combustion compared to the CDI ignition system. This is caused by the combustion chamber and air not mixing directly because the platinum components are mechanical and experience wear due to friction. Therefore, the development of a CDI ignition system based on the Arduino Nano microcontroller was implemented to achieve ignition stability and fuel consumption. The Arduino Nano microcontroller regulates ignition based on RPM to improve engine efficiency and performance. The test results show that measuring RPM with the Arduino Nano microcontroller regulates ignition timing in the RPM range of 0-15,000 RPM with a current of 6-8A and a voltage of 320-400V varying. The magnitude of the RPM causes a significant decrease in current and voltage, while the increase in RPM can be overcome by the addition of a digital filter. This Arduino-based CDI ignition system can produce larger sparks with efficient ignition timing at high RPM rotations.
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