3 ms·
They're a switching power supply. But you're making a mistake. You're confusing "should, in a competently designed power supply," with "does, in something tri
by Syonyk 3y ago
They're a switching power supply.
But you're making a mistake. You're confusing "should, in a competently designed power supply," with "does, in something trimmed to the absolute lowest cost that will mostly make it through warranty on a product in which nobody keeps the receipts and such around to make the warranty claim."
- marcosdumay 3y agoWell, ok, if you insist on iterating on the design until you take the last tenth of a cent from the marginal cost, you'll get something that can't handle transients or small excess voltage. But iterating on the design is expensive too. And that optimization is well within the region where your suppliers will often cheat(?) and add all that quality back without telling you just because some of their customers demand it and it's cheaper to give you high-quality products than to retool their factories. Or, in other words, it's quite possible that you have a bulb here or there fail due to those. But you won't get consistent failure with several brands.
- ThePowerOfFuet 3y agoWhen you make ten million bulbs, saving ten cents on each one puts a million dollars into your pocket. Shaving just one cent off each bulb is still a cool hundred grand.