Fault Detection and Reliability Analysis in Electrical Circuits and Systems

Abstract

Reliability is one of the most important aspects of electrical circuit design, particularly in safety-critical applications such as aerospace, automotive systems, and medical electronics. This paper investigates fault detection techniques, error-tolerant circuit design, and methods for improving overall system reliability. Traditional approaches such as redundancy, parity checking, and watchdog timers are compared with modern fault-tolerant architectures leveraging machine learning and predictive analytics. The paper also evaluates built-in self-test (BIST) strategies, fault injection analysis, and real-time monitoring circuits. A detailed review of failure mechanisms such as electromigration, dielectric breakdown, and thermal fatigue is provided to highlight the importance of robust design. Real-world examples are discussed where fault-tolerant systems prevented catastrophic failures. The research concludes that continuous innovation in reliability engineering ensures the safe deployment of advanced circuits in high-risk environments.

KEYWORDS: Fault Detection, Reliability Engineering, Built-in Self-Test (BIST), Error Tolerance, Failure Mechanisms