3 ms·
> they are designed for universal voltage range: AC 90-264V I have never thought of that, since it's not a problem on its own. But yeah, this makes the first p
by marcosdumay 2y ago
> they are designed for universal voltage range: AC 90-264V
I have never thought of that, since it's not a problem on its own. But yeah, this makes the first point way worse than it by itself. It's enough to explain all the geographic difference in quality I have noticed.
> as a general guidance - buy the heaviest bulbs at a specific lumens
But this does not work very well. You can easily get a 20 times difference on the power supply waste between bulbs. If the one that is 20 times worse is 10 times heavier, it will still have a much shorter life time.
- xxs 2y agoThe most noticeable difference is still the metal heatsink. LED drivers would be non-isolated ones, so only a single coil (not a transformer). The other part of the weight difference would be capacitors (hopefully larger ones), and (hopefully) input filtering. Some LED bulbs have terrible input filtering (or not at all) and can easily die due to transients (incl. inductive motor noise/kickback) - input filtering normally would be a capacitor + coil. An example of a similar (LED based discussion) a year back: https://news.ycombinator.com/item?id=35371750 https://news.ycombinator.com/item?id=35371750