can I use air core chocke for PFC circuit

 

In theory, yes. But a PFC circuit usually needs high current inductor in a small space, so a ferrite core toroid is a common solution.

ak

 

I'm not sure why, but you left the another post and no any reply also deleted the circuit in #5, I just found that you open this new thread, why was that for?

Deleted the circuit in #5.
http://forum.allaboutcircuits.com/threads/2-mosfets-in-series-for-pfc-circuit.116573/#post-911601

 

can I use air core chocke for PFC circuit

It is possible, but the size of such an inductance is large. It will be an increased level of electromagnetic interference.

 

I'm not sure why, but you left the another post and no any reply also deleted the circuit in #5, I just found that you open this new thread, why was that for?

Deleted the circuit in #5.
http://forum.allaboutcircuits.com/threads/2-mosfets-in-series-for-pfc-circuit.116573/#post-911601

sorry for that , I was working and far from my computer, I did reply
thanks ScottWang