Power Source with Digital Volt-Amp Panel Meter

Haider Talib  Juwaid; Hussein Mahdi  Awda; Mustafa Abdul Abbas  Karim; Khadir Hussein  Aliwi

Haider Talib Juwaid Medical Instruments Techniques Engineering Department, Al-Hussain University College, Kerbala, Iraq
Hussein Mahdi Awda Medical Instruments Techniques Engineering Department, Al-Hussain University College, Kerbala, Iraq
Mustafa Abdul Abbas Karim Medical Instruments Techniques Engineering Department, Al-Hussain University College, Kerbala, Iraq
Khadir Hussein Aliwi Medical Instruments Techniques Engineering Department, Al-Hussain University College, Kerbala, Iraq

Keywords: AC-DC conversion, Voltage stability, Ripple reduction, DC power source, Electronic circuits

Abstract

Alternating current (AC) is the primary form of electrical energy supplied, fluctuating sinusoidally at 60 Hz (or 50 Hz in Europe). However, many electronic circuits require stable direct current (DC), free from short-term fluctuations. Dry cell batteries offer good short-term stability but suffer from long-term instability due to discharge. In contrast, AC-to-DC converters ensure long-term stability but often introduce ripple, causing short-term fluctuations. This research aims to design a stable DC power source by addressing both short- and long-term stability challenges. The system includes a transformer for voltage adjustment, a rectifier to convert AC to DC, a smoothing circuit with an inductor and capacitor, and an electronic stabilizer to enhance output stability. The study demonstrates that the combination of these components reduces ripple and improves overall voltage stability, offering valuable insights for developing reliable DC power supplies in electronic systems.

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