NONE 20251231084756440 naun/naun content-registration-form+ja@crossref.org content-registration-form International Journal of Circuits Systems and Signal Processing 1998-4464 Amirhossein Babaei Department of Mechanical Engineering, Technical and Vocational University (TVU), Tehran, Iran Saeid Kohani Department of Mechanical Engineering, Technical and Vocational University (TVU), Tehran, Iran Avionics systems in aircraft rely on precise power management to regulate battery charge and control power distribution across electrical systems. This study focuses on designing and constructing a digital ammeter-voltmeter system with a seven-segment display to accurately measure battery charge, discharge, and generator load in helicopters. The system replaces traditional analog meters with an electronic solution that provides real- time numerical readings. By using TC7107 IC, this electronic circuit accurately monitors DC and AC voltage and current levels, ensuring reliable power management. The implementation of this system in two-seater helicopters improves safety and operational efficiency by enabling precise monitoring of power conditions and increase the reliability and accuracy of helicopter operator monitoring. The system is capable of localization, operation, and implementation, and its model simulation has been performed. The results of which are presented in the text of the article, indicating better operational performance and stability of the helicopter's electronic system. 12 31 2025 12 31 2025 13 2 https://creativecommons.org/licenses/by/4.0/deed.en_US 10.46300/9106.2025.19.2 https://npublications.com/journals/circuitssystemssignal/2025/a042005-002(2025).pdf Tooley, Michael H., and David Wyatt. Aircraft electrical and electronic systems: principles, operation and maintenance. Routledge, 2009. IHRC - Helicopter Design and Manufacturing Manual - Shudabayev, Aslan. "Manufacturing design of a helicopter frame." (2024). Federal Aviation Administration. Rotorcraft flying handbook. Skyhorse Publishing Inc., 2007. Noorman, Merel. "Responsibility practices and unmanned military technologies." Science and engineering ethics 20.3 (2014): 809-826. Winsko, Stan J., and Alan S. Hellman. Aircrew Protective Clothing and Devices System (Rotary Wing Aircraft). No. NADC7421540. 1974. Sultanov, Maxsud, Ilya Boldyrev, and Julia Gorban. "The concept of digitalization of power systems for ensuring reliability, safety and economy." AIP Conference Proceedings. Vol. 2552. No. 1. AIP Publishing LLC, 2023. Chursin, Alexander A. "The Analysis of Foreign Planning, Development, and Quality Systems for the Production of Helicopter Technology in the World Market." Industry Competitiveness: Digitalization, Management, and Integration (2020): 663. Rastvorova, I. I. "Assessment of the consumers’ contribution to the deterioration of the electrical power quality." IOP Conference Series: Materials Science and Engineering. Vol. 643. No. 1. IOP Publishing, 2019.