Triac transformers 24v
You can calculate the suitably dimmable triac transformer by telling you LEDtape watit/meter in the length of the tape, that is, if LED strip It is 12W/m 24V and the installation is 3m and 12W/m x 3m = 36W. Always choose about 20-30% higher standard voltage source, in this case 36W -> 50W 24V triac power supply.