How to Build a 15W or 28W LED Lamp Circuit: Components and Schematic Needed

The discussion focuses on designing LED lamp circuits for 15W, 20W, and 28W power ratings, specifically transformerless designs powered from 230V AC mains. The user seeks a simple, low-component-count circuit to drive white LEDs rated around 3V to 3.6V and 20-25mA current. Key considerations include the power source type, LED drive current, and circuit protection when LEDs are disconnected. It is suggested that a transformer or driver circuit is typically required for stable operation. A datasheet from Linear Technology (http://cds.linear.com/docs/en/datasheet/37991f.pdf) is referenced, which includes a schematic for a 25W LED driver. Additional resources for mains-operated LED circuits and USB-powered LED lamp circuits are recommended for design guidance. Calculations for resistor and capacitor values (R1, R2, C1) are requested but not explicitly provided.
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