Convert Halogen fitting to LED

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They don't even specify whether they are AC or DC. As LEDs are DC devices one can only guess.

Alternatives in that listing do say AC/DC but not frequency.

So, were you wrong, or were you lying?
 
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So according to your philosophy, switched mode power supplies do not have smoothing capacitors on their outputs? To basically provide dc? Interesting...

Again you are showing your lack of knowledge. SMPTs of the type for powering halogen lamps have an AC output of tens of kHz. AC supples cannot have smoothing caps. DC SMPTs obviously have smoothing caps.
 
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