hi,
i am making a wireless e-vehicle battery charger for my final year project. It would work on the principle of resonant mutual induction. I read in some IEEE papers that power transfer could be maximized by using a input signal having frequancy in the range of Mhz . how do we increase the frequency of AC signal to such a value (about 4 Mhz)? other option being converting the AC to DC and switching it at Mhz range to get a pulsating DC. Can a pulsating DC be used in transformers, would it short and burn the windings?? To produce a pulsating DC, i thought i could give a 4 MHz pulse to the gate of a MOSFET. how do i produce said 4 Mhz gate pulse? I have tried using a 555 timer in astable mode, but it has an upper limit of about 0.68 Mhz . how can i connect a 4 Mhz crystal (2 pin) to the gate? shall i use a PIC instead? also, considering that my pulsating dc voltage is transferred across my air-cored transformer, can i use it somehow to charge a 6V rechargble battery?
sorry for the bother, and thanx for the answers
i am making a wireless e-vehicle battery charger for my final year project. It would work on the principle of resonant mutual induction. I read in some IEEE papers that power transfer could be maximized by using a input signal having frequancy in the range of Mhz . how do we increase the frequency of AC signal to such a value (about 4 Mhz)? other option being converting the AC to DC and switching it at Mhz range to get a pulsating DC. Can a pulsating DC be used in transformers, would it short and burn the windings?? To produce a pulsating DC, i thought i could give a 4 MHz pulse to the gate of a MOSFET. how do i produce said 4 Mhz gate pulse? I have tried using a 555 timer in astable mode, but it has an upper limit of about 0.68 Mhz . how can i connect a 4 Mhz crystal (2 pin) to the gate? shall i use a PIC instead? also, considering that my pulsating dc voltage is transferred across my air-cored transformer, can i use it somehow to charge a 6V rechargble battery?
sorry for the bother, and thanx for the answers
