[Amps] B&W FC-30 Filament Choke: EPILOGUE

[Tom W8JI]

>I have some OLD FC-30 chokes in metal boxes with 4 
>terminals on each end.
> One had a bad internal connection so I pried open the box 
> and found that it
> was made of ferrite or powdered iron toroids not ferrite 
> sticks.
>

The one I opened looked like they stole loopstick antennas 
from a 1960's 6 transistor AM radio.

It had a whole pile of little flat ferrite cores that were 
wide and thin and long all bonded together and thick 
insulation wire (not even magnet wire) wound around it.

I was so unimpressed I never used another one.

73 Tom