LF: SV: 3C85 Material: Obsolete?

["Johan Bodin" <sm6lkm.jbeab@swipnet.se>]

Hi,

> Also, does anyone know a suitable alternative to those magical
> 3C85 cores having a diameter of 25; 42; and 58 mm?
At 136 kHz, the material 3F3 is better than 3C85 for power
transformation (lower core loss). As far as I know, 13, 25 and
36mm toroids are available as well as E-E cores in a number of
sizes (for bobbins).  I don't know about 42 and 58mm toroid
sizes though...

73
Johan