I invite you to watch the first part about a switching power supply removed from a TV. At the beginning, I show you what the entire converter consists of, and then I describe the first board with a mains filter and a stand-by converter. We perform a few measurements, and then move on to the second board with active power factor correction. I talk about what such a system is for, and what the power factor is. I will describe the rest of the boards in the second part of this episode. Part two: • How do switching power supplies work? You know... Don't want to miss new videos? Subscribe to the channel! My most interesting videos: Simple metal detector: • How to make a metal detector? [DIY #66] Reliable step-down converter: • Simple step-down converter with protection... ESR meter: • How to make an ESR meter for a capacitor... Repair of a 12V 5A power supply: • Repair of a 12V switching power supply; Sp... Long-range bug: • FM transmitter with sensitive microphone, plus... Data transfer, multiplexing: • Data transfer over one wire without m... LED bulb repair: • LED bulb repair; How it is built... Good-sounding FM radio: • How to make a simple FM radio with an amplifier... Plug-in power supply repair: • Switching-mode power supply repair; How it wor... Simple FM radio: • How to make a simple FM radio? Receiver... Portable regulated power supply: • Reliable regulated power supply with protection... FM transmitter: • Long-range FM transmitter, design... Changing voltage from 24V to 12V in a power supply: • How to change the output voltage in a pow... Simple flyback power supply: • How to build a simple power supply in a topol... Repairing a power supply in which a mosfet blew up: • Repairing a switching power supply in which a... We repair a switching power supply: • Repairing a switching power supply; What's up... Dummy load for testing power supplies: • Dummy load for testing power supplies... Changing the voltage in a switching power supply: • Changing the output voltage in a power supply... Reverse polarity protection: • Protecting systems against reverse polarity... MPPT controller for solar panels: • Solar charger, charge controller... Repairing an energy-saving light bulb: • How to repair an energy-saving light bulb,... We build a switching power supply: • How to build a power supply in the fly topology... Laboratory power supply: • Converting a switching power supply to a la... Repairing a 5V charger: • Repairing a charger, 5V power supply; LCD monitor repair: • How to repair an LCD monitor, what is in it... ATX power supply repair: • How to repair an ATX power supply, what to look for... Battery rectifier: • Automatic rectifier, charger for... Short circuit protection: • Current limiter, overload protection... Step-up/down converter: • Simple and universal control converter... Simple regulated power supply: • Switching power supply conversion to re... 100W converter from 12V to 230 or 325V: • Converter from 12V to 230 or 325V, m... LED oscilloscope: • LED oscilloscope (part 1): introduction... Simple and efficient audio amplifier: • Simple but efficient audio amplifier... Induction heater, high voltages on ZVS: • ZVS circuit, i.e. induction heater... PWM controller for motors and bulbs: • Regulator PWM for Motors and Light Bulbs ... Playlists: Electronics Basics: • Electronics Basics DIY: • DIY Converters: • Converters Repairs: • Repairs