Use with LEDs properly

I have 3 LED bought bulbs with 10W each, while, however, completely overlooked the it is 12V versions (I've assumed the E27 sockets are always 230V). Anyway, I could not change, and I have simply decided then a 3-burner lamp equipped with this transformer in order to operate the pears. The result is flawless, the bulbs do not flicker and glow now super bright from my garage.

The sometimes described problem with the flickering I know but from another lamp I have converted from halogen to LED and want to complete the following: It is always important to ensure that you use a transformer in the operation of the LED thus not exceeded or is. rather unchallenged. In my case, the LEDs need 3X10W, ie 30 Watt, which is already close to the lower limit for this transformer (20 to 70 watts) dangerous but fortunately still works properly. But if you want to get less than the 20W specified you have to choose a smaller transformer, otherwise it may lead to flickering. One should not interpret too close to the performance limits (so I have "dangerously close" written), since the information of power LEDs are not always very precise. Deviations of +/- 25% are especially visible in cheap products before quite.