Power Integrations has introduced a one-chip non-isolated LED driver for loads up to 22W. Capable of working from inputs from 90 to 305Vac, it is triac (and trailing-edge) dimmable on nominal 110V supplies, but not on 230V supplies. The dimming voltage is a clue here – this chip is aimed at commercial US installations where mains ...
22W ac-dc supply for LED light bulbs
from ElectronicsWeekly http://www.electronicsweekly.com/news/products/led/22w-ac-dc-supply-for-led-light-bulbs-2016-07/
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