Maximizing Wireless Charger Efficiency

[zrex]

hi... now I am in progress to do a wireless charger pad by using coil. so I've seen a lot of project regarding to this wireless charging. do u have any idea how can i make it more efficiency? meaning that how can i get a maximum power transfer while transferring the power from Tx to Rx. normally i see all the project only can achieve until 57% from the actual charger by using all those clumsiness wires charger... hope u can give me any suggestion or idea .thanks.

 

[cmb]

Do a load of experiments with coils and switching rates. You need to figure out what frequency you are going to operate at, learn how to obtain/wind a coil of the inductance that you want to get strong coupled resonance, and then figure out how to build an efficient power circuit to drive your Tx coil.

 

[zrex]

Do a load of experiments with coils and switching rates. You need to figure out what frequency you are going to operate at, learn how to obtain/wind a coil of the inductance that you want to get strong coupled resonance, and then figure out how to build an efficient power circuit to drive your Tx coil.

can u explain what do you mean by choosing the frequency? actually i have watch a lot of videos about the wireless charging by using inductive coil and one thing that I am not clear is what kind of power supply that we need to use? either AC or DC?

 

[cmb]

can u explain what do you mean by choosing the frequency? actually i have watch a lot of videos about the wireless charging by using inductive coil and one thing that I am not clear is what kind of power supply that we need to use? either AC or DC?

I really don't want to sound unhelpful, but you are too far down the learning curve this time around for this project. I suggest you put your time into shopping on the internet for what you are after.