Re: Contactless Charger
When direct driving a transformer, the uC will have issues since the transformer is most probably directly connected to GND on one end. It would be better to use a driving transistor, controlled by the uC. Also, I have found that power transfer is more efficient when series resonating the transformer (both on the primary and secondary sides using a series capacitor; just ensure that the resonating frequencies are identical). With series resonating, the power transfer efficienct becomes much more indepent of distance/orientation.