Anyone who thinks that to be able to operate these LEDs with a transformer, is entteuscht herb. The LEDs flashing at the transformer with 50 heart. This was due to the simple structure, apparently with no additional components, just only diodes. I have such a lamp then tried on a power supply and found that lamps lights only with the correct polarity. So anything with transformer operation as simple diodes, so only one half-wave is used and the lamp flickers up. At the power supply (direct current) this problem has disappeared, however, the LEDs emit a very nice light. For me, just 3 points, I can help myself here.
