Explore the fundamentals of Signal Flow Graphs (SFG) in control systems through this comprehensive 27-minute video lecture. Gain a thorough understanding of SFG construction using algebraic equations and learn about key elements such as nodes, branches, input/output nodes, paths, forward paths, loops, and gains. Discover how to convert block diagrams into equivalent Signal Flow Graph representations. Delve into important concepts including non-touching loops and self-loops, enhancing your grasp of control system analysis and design techniques.