Learn how to design an overcurrent protection circuit with key components, steps, and calculations.
How to Design an Overcurrent Protection Circuit
Overcurrent protection is essential for safeguarding electrical circuits and equipment from damage caused by excessive current flow. This occurs when the current surpasses the rated capacity of components, potentially leading to overheating, equipment failure, or even fire hazards. An overcurrent protection circuit is designed to detect and interrupt the excessive current, ensuring the system's safety. In this article, we will explore how to design an overcurrent protection circuit, covering the essential components and providing a circuit diagram. Key Components of an Overcurrent Protection Circuit 1. Current Sensing Resistor (Shunt Resistor): The current flowing through the circuit is converted into a proportional voltage using a shunt resistor. The value of this resistor is chosen to ensure it doesn't introduce significant voltage drop but provides sufficient measurable voltage. 2. Operational Amplifier (Op-Amp): The voltage across the shunt resistor is small, so an operationa…
About the author
Prasun Barua is a graduate engineer in Electrical and Electronic Engineering with a passion for simplifying complex technical concepts for learners and professionals alike. He has authored numerous highly regarded books covering a wide range of elec…
