Hi guys, I am a newbie here.

I managed to complete my coils.

I tested the coils using:

Source:Signal Generator 10 V p-p

Voltage at end load (100 Ohms): 5-8 Vp-p

I wish to charge my button cell 3.6V LIR 2450.

Would anyone be kind enough to guide me?

 

Is there any IC solution out there?

or any diode-free rectifier that is available in the market?

 

is it possible to build a battery-operated 660 khz oscillator with amplifier as well?

 

Remember that wireless chargers use an expanding and collapsing magnetic field and the intended goal is to convert that changing magnetic field to electricity on the receiving side, a common side effect is that other items near the receiver (or beyond the receiver) absorb this EM field and convert it to heat. There is a balance between shielding and efficiency and your waveguide geometry and materials to maximize efficiency of the transmitted power. Just remember that magnetic fields are circuits too. You cannot shoot a magnetic field like a laser beam - a known return path is better than un unplanned path. You also have to carefully select materials used as waveguides to insure they do not absorb the EM field and start heating.

 

I just got a scolding from my professor. Felt like a bum after not knowing about loading effect, the measuring equipment's' specification and stuffs.