This 3W 280mAmp DC 8-11V Compact Constant Current LED Power Supply / Driver / Transformer is a switching power supply that converts AC 110V/220V to DC volts with a constant current output. Transformers of this type have a constant output current (280 mA for this transformer), and their DC output voltage varies depending on their output power.

https://ledsone.co.uk/collecti....ons/constant-current

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