Giant 19W LED Lamp + schematic + buck regulator explained

In this video I take a look inside a big and powerful 19W LED lamp from Lidl supermarket, made by Livarno Lux. I reverse engineer the schematic of it and explain how a buck regulator works.

UPDATE: The control chip is BP2839A. The transistor is BPM5001.

WARNING: This lamp contains dangerous mains voltage! Risk of electric shock and death! The power supply is a buck regulator with no mains isolation. The entire circuitry including the LEDs is live at mains voltage!

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• #science_technology
• #led
• #lamp
• #schematic
• #buck_regulator