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Hello friends, this multi-part video series is about the basics of switching power supplies. In this video I explain the structure of the primary side component by component. To do this, I have made a circuit diagram of a widely used switching power supply and we will analyze some circuit parts with the oscilloscope. I will also cover the following points: *Flyback switching technology *Slope compensation *Soft start *Error detection (open loop detection) *Current mode control All information and the circuit diagram can be found as always on my blog: https://www.aeq-web.com/reparatur-und... Second part: • Basics of switching power supplies Part 2: Sp... Video on the isolation transformer: • Video ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ If you would like to support me and my work, you can find all the options here: https://www.aeq-web.com/support/ ▬ Contents ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 0:00 - What's it about? 1:45 - Safety instructions & measurement setup 3:32 - Block diagram of flyback switching power supply 8:16 - Circuit diagram & data sheet of the PWM controller 9:55 - Mains voltage at the input (oscilloscope) 10:24 - Mains input & fuses 13:32 - Structure of the mains filter 16:30 - Rectifier & smoothing capacitor 18:49 - Power supply from the mains IC (PWM controller) 24:28 - Starting process of the switching power supply (transient response) 28:40 - Driver stage & control of the primary winding 35:39 - Control of the output voltage 45:07 - The open loop detection 52:37 - How does the soft start work? Tags: #switching power supply #smps #snt #aeqweb