How A Switch Mode Power Supply Really Works? Inside an SMPS

In this video, we will discuss how a switching converter works and looks at each of its components in detail. We begin by tracing the path of electricity as it enters the board. You will learn how the Bridge Rectifier and Electrolytic Capacitors create a high-voltage DC bus, and why NTC Resistors are vital to prevent "Inrush Current" from damaging your circuit. We then move into the heart of the system: the Switching Topology. You will see exactly how a MOSFET and a Flyback Transformer work together to store and release energy at high frequencies. We also address the "hidden" problems in power design, such as Leakage Inductance, and show you how RCD Snubber circuits protect your semiconductors from destructive voltage spikes. Industrial Examples: 100W vs. 600W Theory is great, but seeing it in practice is better. We perform a board-level teardown of two different industrial units: 1. The 100W Flyback: A classic example of efficiency and isolation using Optocouplers and PWM Controller ICs. 2. The 600W Half-Bridge: A high-power beast that uses Voltage Doublers, Pulse Transformers, and active cooling (fans and thermal switches) to handle massive loads. #SMPS #PowerElectronics #FlybackConverter #Teardown #HalfBridge #powersupply Reference: The 100W flyback image is sourced from this website: https://www.kirich.blog Stay connected with us for more updates and tips: ✅ Subscribe on YouTube:    / @nobtronix   ✅Follow us on LinkedIn:   / nobtronix   0:00 How Does a Switching Power Supply Work 0:06 Ac to dc power supply explained 0:30 bridge rectifier working animation 1:10 AC Input: Fuse and ntc inrush current limiter 2:24 Working of a Flyback Converter 3:00 rcd snubber circuit working 3:43 smps pwm controller ic 4:25 smps power supply feedback section 5:05 smps startup circuit 6:00 switching power supply noise 6:30 EMI Filters on Power Supplies 6:50 inside of a 100W flyback switching power supply 8:35 inside of a 600W half bridge smps power supply