11-10-2005, 15:15 #1 Join Date: Mar 2005 Posts: 5 Inductive Coupling Hi Guys, I'm not sure if this is the best place to post this thread but hopefully someone can help me out there. The problem is that i want to design an inductive link so that max power is transfered across link. it requires impedance matching.I was just wondering if anyone had any experience in this field and if so could they point me in the right direction. Captain P
 11-10-2005, 17:32 #2 nesf Registered User     Join Date: Apr 2001 Posts: 26,556 Hmm, I think this would possibly get more replies if it was in engineering. Thread moved.
 11-10-2005, 17:39 #3 SparkyLarks Registered User     Join Date: Apr 2005 Posts: 363 you using resonant ccts??
 12-10-2005, 11:13 #4 Join Date: Mar 2005 Posts: 5 Yea i'm using resonant ccts. Basically i have a class e amplifier connected to a series resonant circuit in the primary.This is linked to a secondary which has a parallel resonant tank. I want to know basically the best way to transfer power from the secondary to the primary.I have seen some papers and stuff that try to "match the impedance" of the load and source. They don't explain it very well.Also do i need to keep the same resonant frequency on both the primary and secondary in order to obtain max power transfer. Any help is greatly appreciated, Captain P
 13-10-2005, 09:59 #5 SparkyLarks Registered User     Join Date: Apr 2005 Posts: 363 I am assuming that you want max power to go to a load rather than maximum power to transfer across the link. to maximise power across a link have a huge inductor( however a higher inductor has a huge impedance and thus the current flowing in it will be small and so the power to the load will be small. If you want to maximisse the power to the load First off you want to match the impedance of the secondary to the load. Too big and the current induced will be small. Too small and no current will flow through the load as the resistance of the resonant cct is lower . After that is optimised then you optimise the Source(transmitter) inductance. I think it pretty much works out that the optimum transmitter inductance is equal to the reciever inductance