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Reply to "LED Circuit Design and Modern Transformers"

If you're powering a full 5 meter strip, a 220uf capacitor isn't even close to enough to prevent flicker.  The capacitor is getting hot because it's seeing a LOT of ripple, like full voltage swings! 

I'd be considering a switching power supply, the above suggestion for a computer power supply is an excellent start if you have a number of them to light.

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