I use the transformer for a home-made lamp with 10x 1.5W LEDs. No flickering, no problems. Everything was great, even if the connection of the cables, in particular the two separate distributor for 5x 1.5W LEDs each is something fuzzelig. But with a little skill brings you the way without problems. So everything was great. Next time I would however vorrauschauend get me a dimmable transformer. Who does not dimmable needs is hereby served super. Strong buy recommendation.