I am trying to build a 30W LED Driver with Triac dimming feature.Its performing fine when firing angle is set to zero.But when i start to increase the firing angle, some noise starts coming. Most probably noise comes from the triac circuit. May be its becuase of the distortion of input current. i have tried to tune damping resistor as well as bleeder cappacitor. Bur still that noise persists.I am using LNK410EG. Please give some suggestion to sort out this problem.