Wireless Energy Transfer
Are you powering the h bridge via a gate drive transformer? If so try a pair of ucc37322 ucc37321 fet drivers. for the input of the transformer.
I tried BJTs instead of mosfets and some protecting zener diodes but still pnp and npn s are short circuited (i.e, the H-Bridge works in Test mode, 1-1-1-1). I built up the circuit nearly 10 times but still does not work. I came to the conclusion that the bridge will slow me down. For now i passed the bridge option.
Before the final connection to output i connected a power mosfet with a heatsink. (Gate=Input, Drain=Vcc, Source=Coil)
In the other coil (which is induced through air) i observed a pretty good voltage (around 5v, when the input is 8v) ,but the output is sinosoidal although the input is as in the pictures in the above post.
I will try to upload some photos of waveforms and circuit if there is anyone interested.
Finally
I will try to improve the power transfer by,
-Increasing the frequency
-Connecting serial capacitors to have pure resistive loads.
-Puttting some ferromagnetic in the center of each coil to decrease leakage(just thought today not really sure if it will decrease)
That is it for now, if you have other innovative ideas i would love to hear them.
Ijuset