Harmonic Filter

[joyanand_bd007]

Need some help with harmonics filter . I am doing an led driver project where the output current waveform has some form of harmonic. To filter that out i want to add an harmonic filter . Anyone with any idea how should i approach . Thank You

 

[Harald Kapp]

You're not being very specific. What is the expected waveform? What does the actual waveform look like?

Harmonic content per se is not a bad thing. If you drive LEDs with a rectangular pulsed current, you will have lots of harmonics but high efficiency.

Apart from that, harmonics can be suppressed by a simple low pass filter.