I am 22 years old step mehmet I mentioned the features of this circuit this circuit is to operate 17 smd connected LEDs minimum supply voltage of the circuit is 10v maximum supports maximum 18v input feeds I do not draw trafos so that the circuit is small, I am using uf5408 speed diodes diodes can be changed according to different powers output voltage can be changed by changing the number of windings or thickness of the transformer RV resistors in the schematic are the feedback resistors this integration's feedback voltage is more than 5V more damage the integrator output voltage can be changed by changing the feedback resistors output capacitors minimum 100nF I am running with 50v because my LEDs are connected in series.