I'm still playing with the inductive coupled charger. I need to get
20w across a gap.It is begining to look like I might want to go above 1MHz. I was reminded the last time I brought up 500kHz to 1MHz that that was in the middle of AM band. I think the core design becomes easier the higher I go up in frequency anyway.
What is the practical frequency limits based on present diode technology? Can I get a diode that will operate at 2 amps at 5MHz or
10MHz for 50 cents? I seem to recall the regular Schottky diodes in 3 amp SMB package are around 20 cents. I don't think they have th speed tho. Is the SiC or GaAs diode a likely candidate?Any help would be appreciated.
regards, Bob