Does anyone know of any published articles on designing choke input power
supply filters using tuned chokes?
I suspect that the start is to resonate the choke slightly HF of the
fundamental ripple frequency so that the effective inductance is much
higher. However, it will look capacitive to the harmonics, so there's some
sort of compromise. In the past, I've done it empirically, but that doesn't
help with trying to decide if the peak current ratings are being exceeded by
harmonic currents. And the harmonic currents in diodes in a bridge rectifier
at 2800volts are not that easy to measure!
73
Peter G3RZP
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