In message <BE26154279EFD1119FDE00A0C9410EC2263F45@excalibur.swindon.msl
.mitel.com>, Peter Chadwick <Peter_Chadwick@mitel.com> writes
>
>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
How about Spice, or freeware PSpice?
Steve
>
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